The Pylontech RT12100G31 is a 12V 100Ah lithium iron phosphate (LiFePO4) battery with built-in heating — designed to operate reliably in cold climates where standard lithium batteries would refuse to charge. It's a practical choice for off-grid cabins, shepherd's huts, rural outbuildings, and static 12V systems in locations that see sub-zero temperatures.

Built-in heating element. The integrated heater activates automatically in cold conditions, keeping the cells within their safe operating range for charging. This means the battery continues to accept charge from solar panels or generators even in freezing weather — a critical feature for year-round off-grid use.

LiFePO4 chemistry. Lithium iron phosphate is the safest lithium technology available: non-combustible, thermally stable, and long-lived. Expect thousands of cycles with minimal capacity degradation compared to lead-acid alternatives.

Drop-in 12V replacement. Compatible with standard 12V charge controllers and inverters. The integrated BMS handles overcharge, over-discharge, and short-circuit protection automatically.

Key specifications:

Nominal voltage: 12V
Capacity: 100Ah (1.28kWh)
Chemistry: LiFePO4 (Lithium Iron Phosphate)
Built-in heating: Yes — activates automatically in cold conditions
Integrated BMS: Yes
Warranty: 7 years standard (extendable to 10 years free via Pylontech registration)


Sourced from Bimble Solar, our trusted UK trade supplier. As a buy-to-order business, we purchase your battery directly from Bimble Solar once your order is placed.

Price shown includes VAT.