SK 12V 280Ah Heated Lithium Battery

SOK 12V 280Ah Heated LiFePO₄ Battery – Serious Capacity for Off-Grid, Backup & House Power Systems The SOK SK12V280H is a workhorse. With 280Ah of usable capacity and a hefty 3584Wh of energy in a single 12V unit, this is the battery you reach for when you're powering a whole cabin, a serious backup system. Built-in heating pads handle the cold automatically, so charging keeps going through Central Otago winters, alpine sheds, and frosty Waikato mornings when other lithium batteries would sit there refusing to take a charge. Inside you'll find genuine grade A 280Ah prismatic LiFePO₄ cells paired with SOK's own custom-designed BMS — not the generic off-the-shelf board you'll find in most competitor batteries. It handles 200A continuous discharge, 250A peak, and protects against over-charge, over-discharge, over-current, short circuit, and high or low temperature events. The aluminium case is built to take a beating, and the design is fully serviceable — pop the cover, swap a cell or the BMS, and keep going. Most lithium batteries on the market are sealed boxes you throw away when something fails; this one isn't. SOK has been one of the most trusted names in the global off-grid community for years, with a reputation built on transparency, build quality, and batteries that actually do what the spec sheet says. Key Features 12V 280Ah / 3584Wh capacity Internal heating pads with automatic low-temperature charge protection Genuine Grade A Ganfeng prismatic LiFePO₄ cells SOK custom-designed Smart BMS with Bluetooth monitoring Max continuous discharge: 200A (250A peak) Recommended charge current: 56A (max 120A) 4000–8000 cycle life, maintenance-free Powder-coated aluminium enclosure with M8 terminals Detachable cover — user-serviceable BMS and cells Over-charge, over-discharge, over-current and short-circuit protection High and low temperature disconnects Parallel up to 10 units Certified to UL1973, UL9540A and IEC62619 (cells) Why It's a Smarter Buy Serviceable design — replace the BMS or cells instead of binning the whole battery Built to last: 15+ year realistic lifespan when looked after Lightweight compared to lead-acid — easier to install and rack up Faster charging and 100% usable capacity vs AGM or gel No off-gassing, no voltage sag, no topping up Excellent thermal stability and very low self-discharge Datasheet