{"product_id":"fox-ess-cq7-high-voltage-battery-slave-module-7-02kwh","title":"Fox ESS CQ7 High Voltage Battery Slave Module 7.02kWh","description":"\u003cdiv style=\"font-size:16px;max-width:900px;margin:0 auto;font-family:Arial,Helvetica,sans-serif;color:#222222;line-height:1.5;\"\u003e\n\u003cp style=\"margin:0 0 20px 0;line-height:1.65;color:#222222;\"\u003eThe \u003cb\u003eFox ESS CQ7 Slave\u003c\/b\u003e (Part No: \u003cb\u003eFE-CQ7-S\u003c\/b\u003e) is the battery expansion module for the Fox ESS CQ7 high-voltage storage system, adding a further \u003cb\u003e7.02kWh of LiFePO₄ (LFP) capacity\u003c\/b\u003e to any existing CQ7 stack. Unlike the Master module, the Slave contains \u003cb\u003ebattery cells only\u003c\/b\u003e — no system controller — keeping each added module lighter and simpler to install. Slave modules are added one at a time in series with a single \u003cb\u003eCQ7 Master (FE-CQ7-M, sold separately)\u003c\/b\u003e to scale a stack from 14.04kWh up to a maximum of 98.28kWh.\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;margin:0 -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:140px;background:#008377CF;color:#ffffff;border-radius:8px;padding:14px 10px;text-align:center;margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:700;line-height:1.2;\"\u003e7.02kWh\u003c\/div\u003e\n\u003cdiv style=\"font-size:11.5px;font-weight:400;margin-top:4px;line-height:1.3;opacity:0.95;\"\u003eModule Capacity\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:140px;background:#008377CF;color:#ffffff;border-radius:8px;padding:14px 10px;text-align:center;margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:700;line-height:1.2;\"\u003e57.6V\u003c\/div\u003e\n\u003cdiv style=\"font-size:11.5px;font-weight:400;margin-top:4px;line-height:1.3;opacity:0.95;\"\u003eNominal Voltage\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:140px;background:#008377CF;color:#ffffff;border-radius:8px;padding:14px 10px;text-align:center;margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:700;line-height:1.2;\"\u003e80A\u003c\/div\u003e\n\u003cdiv style=\"font-size:11.5px;font-weight:400;margin-top:4px;line-height:1.3;opacity:0.95;\"\u003eMax Charge\/Discharge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:140px;background:#008377CF;color:#ffffff;border-radius:8px;padding:14px 10px;text-align:center;margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:700;line-height:1.2;\"\u003e90%\u003c\/div\u003e\n\u003cdiv style=\"font-size:11.5px;font-weight:400;margin-top:4px;line-height:1.3;opacity:0.95;\"\u003eDepth of Discharge\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:140px;background:#008377CF;color:#ffffff;border-radius:8px;padding:14px 10px;text-align:center;margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:700;line-height:1.2;\"\u003e\u0026gt;95%\u003c\/div\u003e\n\u003cdiv style=\"font-size:11.5px;font-weight:400;margin-top:4px;line-height:1.3;opacity:0.95;\"\u003eRound-Trip Efficiency\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:140px;background:#008377CF;color:#ffffff;border-radius:8px;padding:14px 10px;text-align:center;margin:4px;\"\u003e\n\u003cdiv style=\"font-size:20px;font-weight:700;line-height:1.2;\"\u003eIP65\u003c\/div\u003e\n\u003cdiv style=\"font-size:11.5px;font-weight:400;margin-top:4px;line-height:1.3;opacity:0.95;\"\u003eIngress Protection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fdecec;border-left:4px solid #c0392b;border-radius:6px;padding:14px 16px;margin:0 0 18px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#c0392b;font-size:14px;margin-bottom:6px;\"\u003eQualified Installation Required\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;line-height:1.6;color:#2b2b2b;\"\u003eHigh-voltage battery wiring must be carried out by a \u003cb\u003equalified, competent electrician\u003c\/b\u003e in accordance with BS 7671 and Part P of the Building Regulations. Where the installation forms part of an MCS-certified renewable system, work must be completed by an \u003cb\u003eMCS-accredited installer\u003c\/b\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff6e5;border-left:4px solid #b9770e;border-radius:6px;padding:14px 16px;margin:0 0 18px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#b9770e;font-size:14px;margin-bottom:6px;\"\u003eRequires a CQ7 Master to Operate\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;line-height:1.6;color:#2b2b2b;\"\u003eThe CQ7 Slave is a \u003cb\u003ebattery-only expansion module\u003c\/b\u003e and cannot function as a standalone system. Every stack must include exactly \u003cb\u003eone CQ7 Master (FE-CQ7-M)\u003c\/b\u003e, sold separately, which provides the system controller, BMU and inverter communication that the whole stack relies on.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:rgba(0,131,119,0.13);border-left:4px solid #008377;border-radius:6px;padding:14px 16px;margin:0 0 18px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377;font-size:14px;margin-bottom:6px;\"\u003ePlug-and-Play Capacity Expansion\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;line-height:1.6;color:#2b2b2b;\"\u003eEach Slave module simply \u003cb\u003estacks in series\u003c\/b\u003e on top of the existing tower, adding 7.02kWh of usable LFP capacity per unit with no additional control electronics required. Up to \u003cb\u003e13 Slave modules\u003c\/b\u003e can be combined with a single Master, taking total stack capacity as high as \u003cb\u003e98.28kWh\u003c\/b\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#008377CF;margin:30px 0 14px 0;\"\u003eWhy It Performs\u003c\/div\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;margin:0 -4px 24px -4px;\"\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#ffffff;border:1px solid rgba(0,131,119,0.13);border-top:3px solid #008377CF;border-radius:8px;padding:16px;margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;font-size:14.5px;color:#1a1a1a;margin-bottom:8px;\"\u003ePure Capacity Expansion\u003c\/div\u003e\n\u003cdiv style=\"font-size:13.5px;line-height:1.6;color:#3a3a3a;\"\u003eAdds \u003cb\u003e7.02kWh of LiFePO₄ capacity\u003c\/b\u003e per module with no duplicate control electronics, keeping incremental expansion cost-efficient as a stack grows.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#ffffff;border:1px solid rgba(0,131,119,0.13);border-top:3px solid #008377CF;border-radius:8px;padding:16px;margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;font-size:14.5px;color:#1a1a1a;margin-bottom:8px;\"\u003eCAN Communication\u003c\/div\u003e\n\u003cdiv style=\"font-size:13.5px;line-height:1.6;color:#3a3a3a;\"\u003eIntegrates into the stack's \u003cb\u003eCAN bus\u003c\/b\u003e, reporting cell-level data back to the Master module for accurate state-of-charge and balancing across the full tower.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#ffffff;border:1px solid rgba(0,131,119,0.13);border-top:3px solid #008377CF;border-radius:8px;padding:16px;margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;font-size:14.5px;color:#1a1a1a;margin-bottom:8px;\"\u003eScalable Architecture\u003c\/div\u003e\n\u003cdiv style=\"font-size:13.5px;line-height:1.6;color:#3a3a3a;\"\u003eUp to \u003cb\u003e13 Slave modules\u003c\/b\u003e can be installed in series with one Master, allowing installers to size a system precisely to the property's storage requirement.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#ffffff;border:1px solid rgba(0,131,119,0.13);border-top:3px solid #008377CF;border-radius:8px;padding:16px;margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;font-size:14.5px;color:#1a1a1a;margin-bottom:8px;\"\u003eIntegrated Fire Protection\u003c\/div\u003e\n\u003cdiv style=\"font-size:13.5px;line-height:1.6;color:#3a3a3a;\"\u003eBuilt with a dedicated \u003cb\u003efire protection function\u003c\/b\u003e and multiple electrical protection layers for safe operation in occupied residential settings.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#ffffff;border:1px solid rgba(0,131,119,0.13);border-top:3px solid #008377CF;border-radius:8px;padding:16px;margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;font-size:14.5px;color:#1a1a1a;margin-bottom:8px;\"\u003eWide Operating Window\u003c\/div\u003e\n\u003cdiv style=\"font-size:13.5px;line-height:1.6;color:#3a3a3a;\"\u003eRated to discharge down to \u003cb\u003e-10°C\u003c\/b\u003e as standard, with an optional internal warm-up function extending charge and discharge operation down to \u003cb\u003e-25°C\u003c\/b\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#ffffff;border:1px solid rgba(0,131,119,0.13);border-top:3px solid #008377CF;border-radius:8px;padding:16px;margin:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;font-size:14.5px;color:#1a1a1a;margin-bottom:8px;\"\u003eOutdoor-Rated, Fanless Design\u003c\/div\u003e\n\u003cdiv style=\"font-size:13.5px;line-height:1.6;color:#3a3a3a;\"\u003e\n\u003cb\u003eIP65-rated\u003c\/b\u003e housing with natural convection cooling means no moving parts and no fan noise — suitable for indoor or outdoor floor-standing installation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#008377CF;margin:30px 0 14px 0;\"\u003eTechnical Specification\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin-bottom:8px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e6e6e6;min-width:480px;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#008377CF;\"\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:13px;width:46%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:13px;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#ffffff;font-weight:700;font-size:13.5px;padding:8px 12px;\"\u003eElectrical Characteristics\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eBattery Type\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003eLFP (LiFePO₄)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eNominal Capacity (per module)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e7.02kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eNominal Voltage (per module)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e57.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eMax. Charge\/Discharge Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e80A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eRecommended Charge\/Discharge Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003ePeak Discharge Current\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e110A (60 sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eBattery Pack Round-Trip Efficiency\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e\u0026gt;95% (@25°C, 0.3C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eDepth of Discharge\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e90%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eCommunication\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003eCAN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eDisplay\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e1 x status LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin-bottom:8px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e6e6e6;min-width:480px;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#008377CF;\"\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:13px;width:46%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:13px;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#ffffff;font-weight:700;font-size:13.5px;padding:8px 12px;\"\u003eOperating Conditions\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eInstallation Location\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003eOutdoor \/ Indoor (floor-standing on stand)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eOperating Temperature (standard)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003eCharge: 0~55°C  |  Discharge: -10~55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eOperating Temperature (optional warm-up)\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003eCharge: -25~55°C  |  Discharge: -25~55°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eStorage Temperature\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e-10~50°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eCooling Method\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003eNatural convection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eHumidity\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e5~95% (non-condensing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eMax. Operating Altitude\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e3,000m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin-bottom:8px;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;border:1px solid #e6e6e6;min-width:480px;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#008377CF;\"\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:13px;width:46%;\"\u003eSpecification\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:13px;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"background:#008377CF;color:#ffffff;font-weight:700;font-size:13.5px;padding:8px 12px;\"\u003eCertification \u0026amp; Protection\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eFire Protection Function\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003eYes, integrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eIngress Protection\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003eIP65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eSafety\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003eIEC 62619\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eEMC\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003eIEC 61000-6-1 \/ -2 \/ -3 \/ -4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eTransportation\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003eUN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#333333;border-bottom:1px solid #e6e6e6;width:46%;\"\u003eMax. Modules in Series\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;font-size:13.5px;color:#111111;border-bottom:1px solid #e6e6e6;font-weight:600;\"\u003e14 (1 Master + up to 13 Slaves)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-weight:700;font-size:15px;color:#008377CF;margin:24px 0 8px 0;\"\u003eStack Sizing Reference (1 x Master + Slaves)\u003c\/div\u003e\n\u003cdiv style=\"overflow-x:auto;margin-bottom:8px;\"\u003e\u003ctable style=\"border-collapse:collapse;border:1px solid #e6e6e6;min-width:600px;width:100%;\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#008377CF;\"\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:12.5px;white-space:nowrap;\"\u003eStack\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:12.5px;white-space:nowrap;\"\u003eModules\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:12.5px;white-space:nowrap;\"\u003eCapacity\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:12.5px;white-space:nowrap;\"\u003eOperating Voltage\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:12.5px;white-space:nowrap;\"\u003eStack Dimensions (W x D x H)\u003c\/th\u003e\n\u003cth style=\"text-align:left;padding:9px 12px;color:#ffffff;font-size:12.5px;white-space:nowrap;\"\u003eStack Weight\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003eL2 (min. stack)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e1M + 1S\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e14.04kWh\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e115.2V\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e660 x 360 x 420mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e105.5kg ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003eL3\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e1M + 2S\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e21.06kWh\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e172.8V\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e660 x 360 x 575mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e156.0kg ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003eL4\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e1M + 3S\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e28.08kWh\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e230.4V\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e660 x 360 x 730mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e206.5kg ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003eL5\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e1M + 4S\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e35.10kWh\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e288.0V\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e660 x 360 x 885mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e257.0kg ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003eL6\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e1M + 5S\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e42.12kWh\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e345.6V\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e660 x 360 x 1040mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e307.5kg ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f4f9f9;\"\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003eL7 (max. for H1-G2 \/ K series)\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e1M + 6S\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e49.14kWh\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e403.2V\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e660 x 360 x 1195mm\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;font-size:13px;color:#222222;border-bottom:1px solid #e6e6e6;white-space:nowrap;\"\u003e358.0kg ±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-size:18px;font-weight:700;color:#008377CF;margin:30px 0 14px 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"margin-bottom:8px;border:1px solid #e6e6e6;border-radius:6px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#ffffff;padding:10px 14px;font-weight:600;font-size:14px;cursor:pointer;list-style:none;\"\u003eCan I install a CQ7 Slave module without a Master?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;font-size:13.5px;line-height:1.6;color:#2b2b2b;background:#ffffff;\"\u003eNo. The Slave module contains battery cells only and has no system controller of its own. It must be connected in series with exactly \u003cb\u003eone CQ7 Master (FE-CQ7-M)\u003c\/b\u003e to form a working stack.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px;border:1px solid #e6e6e6;border-radius:6px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#ffffff;padding:10px 14px;font-weight:600;font-size:14px;cursor:pointer;list-style:none;\"\u003eHow many Slave modules can I add to one Master?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;font-size:13.5px;line-height:1.6;color:#2b2b2b;background:#ffffff;\"\u003eUp to \u003cb\u003e13 Slave modules\u003c\/b\u003e can be added to a single Master, taking total stack capacity to a maximum of \u003cb\u003e98.28kWh\u003c\/b\u003e. The practical limit depends on the connected inverter — for example, the H1-G2 and KH\/KA series support a maximum of 6 Slaves (7 modules total, 49.14kWh) per stack.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px;border:1px solid #e6e6e6;border-radius:6px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#ffffff;padding:10px 14px;font-weight:600;font-size:14px;cursor:pointer;list-style:none;\"\u003eCan I add Slave modules to an existing CQ7 stack later?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;font-size:13.5px;line-height:1.6;color:#2b2b2b;background:#ffffff;\"\u003eYes — the modular, plug-and-play design is built for this. Additional Slave modules can be stacked in series with the existing Master as storage requirements grow, up to the inverter's supported maximum.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px;border:1px solid #e6e6e6;border-radius:6px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#ffffff;padding:10px 14px;font-weight:600;font-size:14px;cursor:pointer;list-style:none;\"\u003eDoes the CQ7 Slave need the optional warm-up function for UK installations?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;font-size:13.5px;line-height:1.6;color:#2b2b2b;background:#ffffff;\"\u003eIt depends on the installation location. Standard units charge down to 0°C; for unheated outdoor enclosures in colder parts of the UK, the optional warm-up variant (extending charge capability to -25°C) is worth specifying, and should match the Master and any other Slaves in the same stack.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px;border:1px solid #e6e6e6;border-radius:6px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#ffffff;padding:10px 14px;font-weight:600;font-size:14px;cursor:pointer;list-style:none;\"\u003eIs the CQ7 Slave suitable for outdoor installation?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;font-size:13.5px;line-height:1.6;color:#2b2b2b;background:#ffffff;\"\u003eYes — it carries an \u003cb\u003eIP65 ingress protection rating\u003c\/b\u003e and uses natural convection cooling with no fan, making it suitable for both indoor and outdoor floor-standing installation on a stand.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"margin-bottom:8px;border:1px solid #e6e6e6;border-radius:6px;overflow:hidden;\"\u003e\u003csummary style=\"background:#008377CF;color:#ffffff;padding:10px 14px;font-weight:600;font-size:14px;cursor:pointer;list-style:none;\"\u003eWhat is the difference between the CQ7 Slave and CQ7 Master?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 14px;font-size:13.5px;line-height:1.6;color:#2b2b2b;background:#ffffff;\"\u003eThe Slave (FE-CQ7-S) is a pure 7.02kWh battery module with no system controller, used to add capacity to an existing Master. The Master (FE-CQ7-M) contains the \u003cb\u003esystem controller, BMU and switchgear\u003c\/b\u003e in addition to its own 7.02kWh battery module, and is required once per stack.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Fox ESS","offers":[{"title":"Default Title","offer_id":65012266533213,"sku":"FE-CQ7-S","price":4170.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/FoxESSCQ7SlaveFE-CQ7-S.jpg?v=1781868157","url":"https:\/\/qualityheating.co.uk\/products\/fox-ess-cq7-high-voltage-battery-slave-module-7-02kwh","provider":"AIZO Quality Heating","version":"1.0","type":"link"}