EcoFlow Power Kits Battery 51.2V 40Ah 2048Wh

Main Features

LiFePO₄ (LFP) chemistry: The battery uses lithium iron phosphate cells, which provide improved safety, longer lifespan and better thermal stability compared to typical lithium-ion batteries.

Modular & Stackable Design: Designed to integrate into the EcoFlow Power Kits series, up to three batteries can be stacked/linked to expand total capacity (for example, up to ~6 kWh) and support flexible installation scenarios.

Integrated BMS & Safety Protections: The advanced on-board Battery Management System monitors voltage, current, temperature and state of charge to regulate operations and protect against over-voltage, under-voltage, over-current and thermal stress.

Automatic Heating Function: Built-in self-heating circuitry enables safe charging and discharging even at very low temperatures (down to –20 °C), ensuring performance in cold climates or unheated spaces.

Hot-Swap / Maintenance-Friendly: The unit supports hot-swap operation when used in the Power Kits ecosystem, facilitating maintenance or expansion with minimal downtime.

Compact & Lightweight: At a relatively modest weight (~17 kg) and compact footprint, the battery is manageable for installation in residential or small-space settings.

High Cycle Life: Engineered to deliver thousands of cycles (e.g., ~3,000 cycles to 80 % capacity) under proper usage conditions, which means long-term value and durability.

Plug-and-Play Setup: Compatible with EcoFlow’s Power Hub and associated accessories, the battery can be integrated with PV, inverter and distribution modules for either grid-tie or off-grid configurations.

Description

The EcoFlow Power Kits Battery 51.2 V 40 Ah (2048 Wh) is a high-performance lithium iron phosphate (LiFePO₄) energy storage unit designed by EcoFlow for modular home-energy, mobile and backup applications. With a nominal voltage of 51.2 V and a capacity of 2.048 kWh (40 Ah), this battery forms part of the Power Kits ecosystem and is engineered for durability, safety and flexibility.
Featuring a built-in Battery Management System (BMS) and automatic internal heating, it handles challenging ambient temperatures down to –20 °C and supports stacking of up to three units (yielding up to ~6 kWh) for greater storage. Thanks to LFP-cell chemistry, the unit offers improved cycle life, stability and safety compared to conventional lithium-ion alternatives. Whether deployed in a small home, motorhome or off-grid setting, this unit is built to deliver reliable, resilient power.

Technical Specifications

Specification	Value
Nominal Capacity	2,048 Wh (40 Ah)
Nominal Voltage	51.2 V
Fully-Charged Cut-Off Voltage	57.6 V
Discharge Cut-Off Voltage	40.0 V
Battery Chemistry	LiFePO₄ (Lithium Iron Phosphate)
Maximum Continuous Charge Current	~32 A*
Maximum Continuous Discharge Current	~80 A*
Cycle Life	Approx. 3,000 full cycles to 80 % capacity
Operating Temperature (Charge / Discharge)	–20 °C to +50 °C (with heating)
Storage Temperature	–20 °C to +50 °C
Protection Class / IP Rating	IP54 (dust & splash resistant)
Dimensions	~348 × 198 × 285 mm (*varies by version)
Weight	Approx. 17.1 kg