Core - 12V 300Ah Core Series Deep Cycle Lithium Iron Phosphate Battery w/Self-Heating
Sold by Renogy UK
From £509.99across the range: £509.99 – £983.99
Renogy UK's price when we last checked, on 2 September 2026. They run promotions and price by variant, so confirm the current price on their page before you buy.
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Overview
Core - 12V 300Ah Core Series Deep Cycle Lithium Iron Phosphate Battery w/Self-Heating
300Ah, 3,840Wh, and a charge range that runs down to −20°C. The self-heating version of Renogy's 300Ah Core pack. If the battery lives somewhere that actually gets cold — an underfloor locker, a garage, an uninsulated bench — this is the one that keeps taking charge through a British winter.
- 300Ah / 3,840Wh at 12.8V nominal
- Charges from −20°C to 55°C, self-heating
- 5,000 cycles to 80% depth of discharge
- 200A continuous charge and discharge, 390A peak for 5 seconds
- IP65, M8 terminal bolts
- 27.5kg, 522 × 240 × 219mm
Why the heating matters here
A standard LiFePO4 pack simply refuses charge below 0°C to protect the cells. In practice that means a van parked out in January stops banking alternator and solar input on exactly the days it most needs to. Renogy quote a −20°C charge floor on this pack, which covers any UK winter and most of a European one.
Sizing the bank
3,840Wh is a large single-case bank — enough that most full-time builds running a compressor fridge, a diesel heater, lighting and laptops stop thinking about capacity and start thinking about how fast they can put it back. Pair it with a 50A or 60A DC-DC charger so a day's driving makes a real dent.
Before you order
27.5kg in a 522 × 240 × 219mm case. Check locker dimensions and remaining payload, and secure it properly — an unrestrained battery of this mass is a serious hazard in a crash.
Renogy's published figures
Taken from Renogy's own specification for this product, on the date shown by the price. Anything wired into 230V mains should be signed off by a qualified electrician.
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