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The Vatrer 12V 300Ah is a heated LiFePO4 battery built for RVs, travel trailers and off-grid cabins that need steady power through winter. It delivers 3840Wh with a 200A BMS and up to 2560W continuous discharge, enough to run a fridge, lights, water pump and a modest inverter. A built-in 90W heater kicks in below 32°F and stops at 41°F so charging stays safe in cold weather, and Bluetooth lets you watch voltage, current, temperature and state of charge from the Vatrer app. Against plain unheated 300Ah lithium packs it adds cold-weather charging and phone monitoring; against premium brands it competes on capacity and features rather than a long track record.
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Lowest price we've seen: $539.98 on Nov 13 at Amazon. Tracked across 1 store since Nov 13.
This is a pack of four Vatrer 12V 300Ah LiFePO4 lithium batteries. Each battery stores 3840Wh and has a built-in 200A BMS, with continuous discharge up to 2560W. It is meant for RVs, travel trailers, off-grid cabins and backup power, running loads such as fridges, lights, water pumps, fans, routers and inverters.
The BMS protects against overcharge, over-discharge, short circuit, overcurrent and high temperature. It also balances the internal LiFePO4 cells. A built-in 90W self-heating system turns on when the battery temperature falls below 32°F and turns off at 41°F, so the battery can be charged in cold weather. The housing is IP65 rated against water and dust.
Bluetooth and the Vatrer app show voltage, current, temperature and state of charge in real time. The battery can be charged with a 14.6V LiFePO4 charger, solar panels or DC-DC charging while driving. Batteries can be expanded up to 4S4P, for a system of up to 51.2V 1200Ah (61.44kWh).
