Fox ESS ECS4000 Battery CS4000 | Sub LFP Stackable Batteries With Full Capacity 3.975kWh
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Fox ESS ECS4000 Battery CS4000 | Sub LFP Stackable Batteries With Full Capacity 3.975kWh

$1,474.00
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The CS4000 is a LiFePO₄ (lithium iron phosphate) battery slave module within the ECS4000 series. It pairs with a CM4000 controller module to form scalable battery stacks—each CS4000 adds ~3.97 kWh of capacity. Key Features High Voltage, High Performance: Enables scalable stacks up to ~459.9 V Plug-and-Play Design: Snap-fit modules with CAN bus communication simplify installation  Safety & Certifications: UL1973, UL9540, UL9540A, UN38.3 certified; outdoor-rated IP65 enclosure Long Warranty: 12.5 years standard    System Configurations (ECS4000 Series) Modules (1 CM + N CS) Capacity (kWh) Nominal Voltage (V) Voltage Range (V) H2 (1 + 1) 7.95 115.2 97.2–131.4 H3 (1 + 2) 11.9 172.8 145.8–197.1 H4 (1 + 3) 15.9 230.4 194.4–262.8 H5 (1 + 4) 19.9 288 243–328.5 H6 (1 + 5) 23.8 345.6 291.6–394.2 H7 (1 + 6) 27.8 403.2 340.2–459.9   Use Cases Ideal for residential and small commercial storage, scaling from ~8 kWh up to ~28 kWh Compatible with Fox H1-series hybrid

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