{"product_id":"fox-ess-4-32kwh-battery-slave-module-eq4300-s-replaces-cs4300h","title":"Fox ESS 4.32kWh Battery Slave Module | EQ4300-S | Replaces CS4300H","description":"\u003c!-- SEO Product Name: Fox ESS 4.32kWh Battery Slave Module | EQ4300-S | Replaces CS4300H --\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-S Slave module\u003c\/strong\u003e adds \u003cstrong\u003e4.32kWh of LiFePO₄ storage\u003c\/strong\u003e to an EQ4300 stack. It is a \u003cstrong\u003ebattery-only expansion module\u003c\/strong\u003e that connects to the stack Master, so you can start small and scale up to \u003cstrong\u003e30.24kWh\u003c\/strong\u003e with \u003cstrong\u003eup to 6 Slaves per Master\u003c\/strong\u003e. It is the \u003cstrong\u003ecurrent replacement for the CS4300H slave module\u003c\/strong\u003e and is \u003cstrong\u003ecompatible with ECS4300H systems\u003c\/strong\u003e, so owners of older Fox ESS stacks can still add capacity.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 14px 0; font-size:16px;\"\u003eEach module is a \u003cstrong\u003efloor-standing, plug-and-play unit\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 is built to be stacked in minutes.\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;\"\u003ePer Slave module\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;\"\u003eUp to 6\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#52606d; margin-top:4px;\"\u003eSlaves per Master\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;\"\u003e\u0026gt;95%\u003c\/div\u003e\n\u003cdiv style=\"font-size:13px; color:#52606d; margin-top:4px;\"\u003eRound-trip efficiency\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 #b54708; background:#fffaeb; border-radius:6px; padding:12px 16px; margin:16px 0;\"\u003e\n\u003cdiv style=\"font-weight:700; color:#b54708; margin-bottom:4px;\"\u003eA Slave needs an EQ4300-M Master\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eThe Slave has no stack controller of its own and \u003cstrong\u003ecannot run without a Master\u003c\/strong\u003e. A system is \u003cstrong\u003e1 Master + 1 to 6 Slaves\u003c\/strong\u003e, and \u003cstrong\u003eH3 Pro\u003c\/strong\u003e stacks need at least \u003cstrong\u003e2 Slaves\u003c\/strong\u003e per Master.\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;\"\u003eReplaces the CS4300H and extends ECS4300H systems\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eThe EQ4300-S is the \u003cstrong\u003ereplacement for the CS4300H slave module\u003c\/strong\u003e and the EQ4300 range has superseded the \u003cstrong\u003eECS4300H\u003c\/strong\u003e range. Use it to \u003cstrong\u003eadd capacity to an existing ECS4300H stack\u003c\/strong\u003e with your original CM4300H master in place.\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;\"\u003eMixing with older ECS modules\u003c\/div\u003e\n\u003cdiv style=\"font-size:15px;\"\u003eFox ESS advises \u003cstrong\u003echecking compatibility with your original modules\u003c\/strong\u003e before ordering, for example by confirming the model on your existing stack. In a mixed ECS and EQ stack the \u003cstrong\u003ebattery warm-up function is disabled\u003c\/strong\u003e.\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;\"\u003eSimple capacity expansion\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px;\"\u003eAdd \u003cstrong\u003e4.32kWh per module\u003c\/strong\u003e and grow your stack to a maximum of \u003cstrong\u003e30.24kWh\u003c\/strong\u003e (1 Master + 6 Slaves).\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 installation\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px;\"\u003e\n\u003cstrong\u003ePlug-and-play connections\u003c\/strong\u003e and a modular, stackable design \u003cstrong\u003esave valuable time for installers\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;\"\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 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;\"\u003eBackwards compatible\u003c\/div\u003e\n\u003cdiv style=\"padding:12px 14px; font-size:15px;\"\u003eReplaces the \u003cstrong\u003eCS4300H\u003c\/strong\u003e and extends \u003cstrong\u003eECS4300H\u003c\/strong\u003e stacks, subject to a compatibility check with your original 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;\"\u003eEQ4300 Slaves work as part of a stack that is controlled by an EQ4300-M Master and connected to a \u003cstrong\u003eFox ESS hybrid inverter\u003c\/strong\u003e:\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-S (Slave)\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;\"\u003eCS4300H slave 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;\"\u003eSlave: battery expansion module, requires a 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;\"\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 (via the stack Master)\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;\"\u003e1 × 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;\"\u003eCan a Slave be used without a Master?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eNo. The EQ4300-S is a \u003cstrong\u003ebattery module only\u003c\/strong\u003e. Every stack needs an \u003cstrong\u003eEQ4300-M Master\u003c\/strong\u003e to manage the stack and communicate with the inverter.\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 many Slaves can I add to one Master?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eUp to \u003cstrong\u003e6 Slaves per Master\u003c\/strong\u003e, a total of 7 modules and \u003cstrong\u003e30.24kWh\u003c\/strong\u003e nominal capacity. A single-phase or H3 Smart system needs at least 1 Slave, and an H3 Pro stack needs at least 2.\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;\"\u003eDoes the EQ4300-S replace the CS4300H?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eYes. The EQ4300 range has superseded the \u003cstrong\u003eECS4300H\u003c\/strong\u003e range, and the EQ4300-S is the current \u003cstrong\u003eCS4300H slave\u003c\/strong\u003e equivalent.\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 add EQ4300 Slaves to an older ECS4300H stack?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eYes, EQ4300-S modules can be paired with an existing \u003cstrong\u003eECS4300H\u003c\/strong\u003e stack and its \u003cstrong\u003eCM4300H master\u003c\/strong\u003e, but you should \u003cstrong\u003econfirm compatibility with your original modules\u003c\/strong\u003e before ordering. The battery warm-up function is disabled in a mixed stack.\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 can I use?\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, with the Master connecting the stack to the inverter over CAN.\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 mix EQ4300 Slaves with other EQ models?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003eUse \u003cstrong\u003ematching EQ4300 modules\u003c\/strong\u003e within a stack. Other EQ models such as EQ4800 use their own Master and Slave 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;\"\u003eWhere can I install it?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px; font-size:15px;\"\u003e\n\u003cstrong\u003eOutdoor or indoor\u003c\/strong\u003e on the floor stand, rated \u003cstrong\u003eIP65\u003c\/strong\u003e, in \u003cstrong\u003e5 ~ 95% non-condensing humidity\u003c\/strong\u003e and at altitudes up to \u003cstrong\u003e2,000m\u003c\/strong\u003e.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Fox ESS","offers":[{"title":"Default Title","offer_id":67755943166342,"sku":"FE-EQ4300-S","price":1295.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/FoxESS4.32kWhBatterySlaveModuleEQ4300-SReplacesCS4300H.jpg?v=1792595517","url":"https:\/\/qualityheating.co.uk\/products\/fox-ess-4-32kwh-battery-slave-module-eq4300-s-replaces-cs4300h","provider":"AIZO Quality Heating","version":"1.0","type":"link"}