The TonKor Stack20K is a high-capacity 20kWh LiFePO₄ battery system built for long-lasting and safe energy storage. Using a modular stackable design, it combines four 5.12kWh battery units into a compact and mobile cabinet.

Each module includes a smart BMS for real-time protection and communicates via CAN and RS485, making it compatible with mainstream inverters and energy management systems. With LCD display per module and long cycle life, the Stack20K is perfect for homes, farms, and small businesses seeking reliable off-grid or hybrid storage.

Key Features

20kWh total capacity using 4 modular battery units

51.2V rated voltage, 400Ah system capacity

Stackable cabinet with wheels for easy installation

Smart BMS protection and LCD screen on each module

CAN / RS485 communication for inverter compatibility

Long service life: ≥4000 cycles @ 80% DOD

Safe and stable lithium iron phosphate chemistry