{"product_id":"fox-ess-4-32kwh-hv-battery-master-module-eq4300-m","title":"Fox ESS 4.32kWh Battery Master Module | EQ4300-M | Replaces CM4300H","description":"\u003c!-- SEO Product Name: Fox ESS 4.32kWh Battery Master Module | EQ4300-M | Replaces CM4300H --\u003e\n\u003cdiv style=\"font-size:16px; max-width:900px; margin:0 auto; font-family:Arial,Helvetica,sans-serif; color:#1f2933; line-height:1.65;\"\u003e\n\u003cp style=\"margin:0 0 14px 0; font-size:16px;\"\u003eThe Fox ESS \u003cstrong\u003eEQ4300-M Master module\u003c\/strong\u003e is the control unit at the heart of every EQ4300 stack. It combines a \u003cstrong\u003e4.32kWh LiFePO₄ prismatic cell battery\u003c\/strong\u003e with the stack \u003cstrong\u003ebattery management system (BMS)\u003c\/strong\u003e and talks to your Fox ESS hybrid inverter over \u003cstrong\u003eCAN communication\u003c\/strong\u003e. Every EQ4300 system starts with one Master, and you add EQ4300-S Slave modules to build a \u003cstrong\u003ehigh-voltage stack of up to 30.24kWh\u003c\/strong\u003e. The EQ4300-M is the \u003cstrong\u003ecurrent replacement for the CM4300H master module\u003c\/strong\u003e from the \u003cstrong\u003eECS4300H\u003c\/strong\u003e range.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px 0; font-size:16px;\"\u003eDesigned for UK home storage, the EQ4300 is a \u003cstrong\u003efloor-standing, plug-and-play stackable battery\u003c\/strong\u003e with \u003cstrong\u003e90% depth of discharge\u003c\/strong\u003e, \u003cstrong\u003eround-trip efficiency above 95%\u003c\/strong\u003e and a cycle life of \u003cstrong\u003e6000 cycles or more\u003c\/strong\u003e. Rated \u003cstrong\u003eIP65\u003c\/strong\u003e for \u003cstrong\u003eoutdoor or indoor installation\u003c\/strong\u003e with \u003cstrong\u003enatural convection cooling\u003c\/strong\u003e, it keeps installation quick and keeps the system quiet.\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:10px; margin:22px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003e4.32kWh\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#52606d; margin-top:4px;\"\u003eModule capacity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003e30.24kWh\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#52606d; margin-top:4px;\"\u003eMax. stack\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003e90%\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#52606d; margin-top:4px;\"\u003eDepth of discharge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003e≥6000\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#52606d; margin-top:4px;\"\u003eCycle life\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003eCAN\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#52606d; margin-top:4px;\"\u003eInverter comms\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 130px; border:2px solid #008377CF; border-radius:8px; padding:12px 8px; text-align:center;\"\u003e\n\u003cdiv style=\"font-size:22px; font-weight:700; color:#008377CF; line-height:1.2;\"\u003eIP65\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#52606d; margin-top:4px;\"\u003eOutdoor \/ indoor\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #008377CF; background:#e6f3f2; border-radius:6px; padding:12px 16px; margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:4px;\"\u003eUpgrading from an ECS4300H system?\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eThe EQ4300 range \u003cstrong\u003ereplaces the ECS4300H battery range\u003c\/strong\u003e, and the EQ4300-M is the successor to the \u003cstrong\u003eCM4300H master\u003c\/strong\u003e. If you already own an ECS4300H stack and want more capacity, keep your existing CM4300H master and add \u003cstrong\u003eEQ4300-S Slave modules\u003c\/strong\u003e. Fox ESS advises \u003cstrong\u003echecking compatibility with your original modules\u003c\/strong\u003e before ordering, and the battery warm-up function is disabled in mixed stacks.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #b54708; background:#fffaeb; border-radius:6px; padding:12px 16px; margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#b54708; margin-bottom:4px;\"\u003eThe Master needs at least one Slave\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eA working EQ4300 stack is \u003cstrong\u003e1 Master + a minimum of 1 Slave\u003c\/strong\u003e (EQ4300-L2). Order EQ4300-S Slave modules separately to reach your target capacity, up to \u003cstrong\u003e6 Slaves per Master\u003c\/strong\u003e. A Master on its own will not form a system.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:22px; font-weight:700; color:#008377CF; margin:34px 0 14px 0; padding-bottom:6px; border-bottom:3px solid #008377CF;\"\u003eKey features\u003c\/h3\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:14px; margin:16px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:9px 14px;\"\u003eBuilt-in BMS and CAN\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px;\"\u003eThe Master houses the \u003cstrong\u003ebattery management system\u003c\/strong\u003e for the whole stack and links to the inverter over \u003cstrong\u003eCAN\u003c\/strong\u003e, with \u003cstrong\u003e6 LED indicators\u003c\/strong\u003e on the module.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:9px 14px;\"\u003eScales to 30.24kWh\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px;\"\u003eStack up to \u003cstrong\u003e7 modules in series\u003c\/strong\u003e (1 Master + 6 Slaves) and grow capacity as your demand grows.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:9px 14px;\"\u003e90% depth of discharge\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px;\"\u003eAccess \u003cstrong\u003e90% of rated capacity\u003c\/strong\u003e per cycle with pack round-trip efficiency \u003cstrong\u003eabove 95%\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:9px 14px;\"\u003eLiFePO₄ long life\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px;\"\u003e\n\u003cstrong\u003ePrismatic LiFePO₄ cells\u003c\/strong\u003e rated at \u003cstrong\u003e6000 cycles or more\u003c\/strong\u003e (25°C, 90% DoD, 0.5C).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:9px 14px;\"\u003eIP65, wide temperature range\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px;\"\u003e\n\u003cstrong\u003eIP65\u003c\/strong\u003e enclosure for \u003cstrong\u003eoutdoor or indoor\u003c\/strong\u003e use, charging from \u003cstrong\u003e0 ~ 55°C\u003c\/strong\u003e and discharging from \u003cstrong\u003e-10 ~ 55°C\u003c\/strong\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:9px 14px;\"\u003ePlug-and-play stacking\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px;\"\u003e\n\u003cstrong\u003ePlug-and-play connections\u003c\/strong\u003e save installer time, and a \u003cstrong\u003ebattery warm-up function\u003c\/strong\u003e is available when the system includes both Master and Slave modules.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:22px; font-weight:700; color:#008377CF; margin:34px 0 14px 0; padding-bottom:6px; border-bottom:3px solid #008377CF;\"\u003eRecommended Fox ESS inverters\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 14px 0; font-size:16px;\"\u003eThe EQ4300 Master pairs with the \u003cstrong\u003eFox ESS hybrid inverter range\u003c\/strong\u003e, single phase and three phase:\u003c\/p\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:14px; margin:16px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 400px; border:2px solid #008377CF; border-radius:8px; padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF;\"\u003eFox ESS H1-G2 \/ AC1-G2\u003c\/div\u003e\n\u003cdiv style=\"display:inline-block; background:#008377CF; color:#ffffff; font-size:12px; font-weight:700; border-radius:12px; padding:2px 10px; margin:6px 0 8px 0;\"\u003eSINGLE PHASE | 3 ~ 6kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eModels H1-3.0, H1-3.7, H1-4.6, H1-5.0 and H1-6.0-E-G2, plus the AC-coupled AC1-G2. Supports an EQ4300 stack of \u003cstrong\u003e1 Master + 1 to 6 Slaves\u003c\/strong\u003e (2 to 7 modules).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 400px; border:2px solid #008377CF; border-radius:8px; padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF;\"\u003eFox ESS KH \/ KA series\u003c\/div\u003e\n\u003cdiv style=\"display:inline-block; background:#008377CF; color:#ffffff; font-size:12px; font-weight:700; border-radius:12px; padding:2px 10px; margin:6px 0 8px 0;\"\u003eSINGLE PHASE | 7 ~ 10.5kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eThe higher-power single-phase range for larger homes. Supports an EQ4300 stack of \u003cstrong\u003e1 Master + 1 to 6 Slaves\u003c\/strong\u003e (2 to 7 modules).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 400px; border:2px solid #008377CF; border-radius:8px; padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF;\"\u003eFox ESS H3 Smart\u003c\/div\u003e\n\u003cdiv style=\"display:inline-block; background:#008377CF; color:#ffffff; font-size:12px; font-weight:700; border-radius:12px; padding:2px 10px; margin:6px 0 8px 0;\"\u003eTHREE PHASE | 5 ~ 15kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eModels H3-5.0 to H3-15.0-Smart with a single battery input. Supports an EQ4300 stack of \u003cstrong\u003e1 Master + 1 to 6 Slaves\u003c\/strong\u003e (2 to 7 modules).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 400px; border:2px solid #008377CF; border-radius:8px; padding:14px 16px;\"\u003e\n\u003cdiv style=\"font-size:18px; font-weight:700; color:#008377CF;\"\u003eFox ESS H3 Pro\u003c\/div\u003e\n\u003cdiv style=\"display:inline-block; background:#008377CF; color:#ffffff; font-size:12px; font-weight:700; border-radius:12px; padding:2px 10px; margin:6px 0 8px 0;\"\u003eTHREE PHASE | 15 ~ 30kW\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eTwo independent battery inputs. Each stack needs \u003cstrong\u003e1 Master + at least 2 Slaves\u003c\/strong\u003e (3 to 7 modules per stack), so a dual-stack system uses \u003cstrong\u003e2 Masters and up to 12 Slaves\u003c\/strong\u003e (14 modules).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #008377CF; background:#e6f3f2; border-radius:6px; padding:12px 16px; margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#008377CF; margin-bottom:4px;\"\u003eMatching the stack to the inverter\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eEach stack connects to the inverter battery input over \u003cstrong\u003eCAN\u003c\/strong\u003e through the Master module. The module count you can use depends on the inverter family, so pick the stack size from the table above, then confirm the combination against the Fox ESS inverter and battery configuration guide.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #b54708; background:#fffaeb; border-radius:6px; padding:12px 16px; margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#b54708; margin-bottom:4px;\"\u003eBattery power depends on stack size\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eMaximum charge and discharge current is \u003cstrong\u003e50A\u003c\/strong\u003e per stack, so the battery power you can draw depends on the number of modules and the inverter you pair them with. Check the Fox ESS configuration guide for the exact figure for your combination.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border-left:6px solid #b42318; background:#fef3f2; border-radius:6px; padding:12px 16px; margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#b42318; margin-bottom:4px;\"\u003eInstallation and safety\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eInstall only through a \u003cstrong\u003equalified electrician or MCS-registered installer\u003c\/strong\u003e in line with \u003cstrong\u003eBS 7671\u003c\/strong\u003e and the manufacturer manual, and notify the DNO under \u003cstrong\u003eG98\/G99\u003c\/strong\u003e where required. Fox ESS EQ series guidance specifies \u003cstrong\u003e10 ~ 16mm²\u003c\/strong\u003e battery cable and a \u003cstrong\u003e63A\u003c\/strong\u003e battery breaker for overcurrent protection.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:22px; font-weight:700; color:#008377CF; margin:34px 0 14px 0; padding-bottom:6px; border-bottom:3px solid #008377CF;\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv style=\"border:1px solid #008377CF; border-radius:8px; overflow:hidden; margin:16px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:9px 14px;\"\u003eModule\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eModel\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eEQ4300-M (Master)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eReplaces\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eCM4300H master module (ECS4300H range)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eModule role\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eMaster: battery plus BMS, one per stack\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eBattery type\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eLiFePO₄ prismatic cell\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eModule capacity\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e4.32kWh\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eCommunication\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eCAN\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eDisplay\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e6 × LED\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:9px 14px;\"\u003eElectrical characteristics (stack level)\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eDepth of discharge\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e90%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eBattery pack round-trip efficiency\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e\u0026gt;95%\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eCycle life\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e≥6000 cycles (25°C, 90% DoD, 0.5C charge and discharge)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eRecommended discharge current\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e37.5A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eMax. charge \/ discharge current\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e50A\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003ePeak discharge current\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e65A for 60 seconds\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eScalability\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eMax. 7 modules in series (1 Master + 6 Slaves), up to 30.24kWh\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:9px 14px;\"\u003eOperating conditions\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eInstallation location\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eOutdoor or indoor (floor stand)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eOperating temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eCharge: 0 ~ 55°C | Discharge: -10 ~ 55°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eCharge derating\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eApplies between 0°C and +15°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eStorage temperature\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e-10 ~ 40°C\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eCooling method\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eNatural convection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eHumidity\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003e5 ~ 95% (non-condensing)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eAltitude\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eMax. 2,000m\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:9px 14px;\"\u003eCertificates and protection\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eIngress protection\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eIP65\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eSafety\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eIEC 62619\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#eef7f6; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eEMC\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eIEC 61000-6-1\/2\/3\/4\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; background:#ffffff; padding:9px 14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 220px; font-weight:700; color:#008377CF;\"\u003eTransportation\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 280px;\"\u003eUN38.3\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:22px; font-weight:700; color:#008377CF; margin:34px 0 14px 0; padding-bottom:6px; border-bottom:3px solid #008377CF;\"\u003eEQ4300 stack configurations\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 14px 0; font-size:16px;\"\u003eEvery configuration below uses \u003cstrong\u003eone EQ4300-M Master\u003c\/strong\u003e plus the number of EQ4300-S Slaves shown.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto; margin:16px 0;\"\u003e\u003cdiv style=\"min-width:760px; border:1px solid #008377CF; border-radius:8px; overflow:hidden;\"\u003e\n\u003cdiv style=\"display:flex; background:#008377CF; color:#ffffff; font-weight:700; font-size:14px;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003eStack\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 0; padding:9px 10px;\"\u003eComposition\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003eNominal capacity\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003eNominal voltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003eOperating voltage\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003eW × H × D (mm)\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003eWeight\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#eef7f6; font-size:14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px; font-weight:700; color:#008377CF;\"\u003eEQ4300-L2\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 0; padding:9px 10px;\"\u003e1 Master + 1 Slave\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e8.64kWh\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e115.2 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e97.2 ~ 131.4 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e570 × 368 × 380\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e78.5 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; font-size:14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px; font-weight:700; color:#008377CF;\"\u003eEQ4300-L3\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 0; padding:9px 10px;\"\u003e1 Master + 2 Slaves\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e12.96kWh\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e172.8 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e145.8 ~ 197.1 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e570 × 506 × 380\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e115.5 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#eef7f6; font-size:14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px; font-weight:700; color:#008377CF;\"\u003eEQ4300-L4\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 0; padding:9px 10px;\"\u003e1 Master + 3 Slaves\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e17.28kWh\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e230.4 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e194.4 ~ 262.8 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e570 × 644 × 380\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e152.5 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; font-size:14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px; font-weight:700; color:#008377CF;\"\u003eEQ4300-L5\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 0; padding:9px 10px;\"\u003e1 Master + 4 Slaves\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e21.60kWh\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e288 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e243 ~ 328.5 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e570 × 782 × 380\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e189.5 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#eef7f6; font-size:14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px; font-weight:700; color:#008377CF;\"\u003eEQ4300-L6\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 0; padding:9px 10px;\"\u003e1 Master + 5 Slaves\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e25.92kWh\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e345.6 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e291.6 ~ 394.2 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e570 × 920 × 380\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e226.5 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"display:flex; background:#ffffff; font-size:14px; border-bottom:1px solid #d9e8e7;\"\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px; font-weight:700; color:#008377CF;\"\u003eEQ4300-L7\u003c\/div\u003e\n\u003cdiv style=\"flex:2 1 0; padding:9px 10px;\"\u003e1 Master + 6 Slaves\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e30.24kWh\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e403.2 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e340.2 ~ 459.9 V\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e570 × 1058 × 380\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 0; padding:9px 10px;\"\u003e263.5 kg\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003ch3 style=\"font-size:22px; font-weight:700; color:#008377CF; margin:34px 0 14px 0; padding-bottom:6px; border-bottom:3px solid #008377CF;\"\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eDoes the EQ4300-M replace the CM4300H master?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eYes, as a \u003cstrong\u003eproduct replacement\u003c\/strong\u003e: the EQ4300 range has superseded the \u003cstrong\u003eECS4300H\u003c\/strong\u003e range, so the EQ4300-M is the current \u003cstrong\u003eCM4300H master\u003c\/strong\u003e equivalent. To expand an existing ECS4300H stack, keep your CM4300H master and add \u003cstrong\u003eEQ4300-S Slave modules\u003c\/strong\u003e, after checking compatibility with your original modules.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eWhat does the Master do compared with a Slave?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eThe EQ4300-M is a \u003cstrong\u003ebattery plus the stack BMS\u003c\/strong\u003e, and it is the unit that communicates with the inverter over CAN. The EQ4300-S Slave is a \u003cstrong\u003ebattery module only\u003c\/strong\u003e that adds capacity. Each stack needs exactly one Master.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eCan I buy the Master on its own?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eThe Master is the starting point, but a stack needs \u003cstrong\u003eat least 1 Slave\u003c\/strong\u003e to operate (EQ4300-L2). For an H3 Pro with a three-phase system, the minimum per stack is \u003cstrong\u003e1 Master + 2 Slaves\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eHow big can an EQ4300 stack be?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eUp to \u003cstrong\u003e7 modules in series\u003c\/strong\u003e: 1 Master + 6 Slaves, giving \u003cstrong\u003e30.24kWh\u003c\/strong\u003e nominal capacity. An H3 Pro has two battery inputs, so it can take \u003cstrong\u003etwo stacks\u003c\/strong\u003e, each with its own Master.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eWhich Fox ESS inverters work with the EQ4300?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eThe \u003cstrong\u003eH1-G2 \/ AC1-G2\u003c\/strong\u003e, \u003cstrong\u003eKH \/ KA\u003c\/strong\u003e, \u003cstrong\u003eH3 Smart\u003c\/strong\u003e and \u003cstrong\u003eH3 Pro\u003c\/strong\u003e ranges. Confirm the module count for your inverter against the Fox ESS configuration guide.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eCan I install it outdoors?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eYes. The EQ4300 is rated \u003cstrong\u003eIP65\u003c\/strong\u003e for outdoor or indoor floor-standing installation, with operating temperatures of \u003cstrong\u003e0 ~ 55°C for charging\u003c\/strong\u003e and \u003cstrong\u003e-10 ~ 55°C for discharging\u003c\/strong\u003e. Charge derating applies between 0°C and +15°C.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #008377CF; border-radius:8px; margin:10px 0; overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF; color:#ffffff; font-weight:700; padding:11px 14px; cursor:pointer;\"\u003eWhat cable and breaker does the battery need?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eFox ESS EQ series guidance specifies \u003cstrong\u003e10 ~ 16mm²\u003c\/strong\u003e cable and a \u003cstrong\u003e63A\u003c\/strong\u003e battery breaker. Always follow the manufacturer manual and \u003cstrong\u003eBS 7671\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Fox ESS","offers":[{"title":"Default Title","offer_id":67754896130438,"sku":"FE-EQ4300-M","price":1295.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/FoxESS4.32kWhBatteryMasterModuleEQ4300-MReplacesCM4300H.jpg?v=1792595651","url":"https:\/\/qualityheating.co.uk\/products\/fox-ess-4-32kwh-hv-battery-master-module-eq4300-m","provider":"AIZO Quality Heating","version":"1.0","type":"link"}