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The Vatrer 12V 300Ah is a dual-purpose LiFePO4 battery that starts a marine engine with 1500 CCA and doubles as a 300Ah deep-cycle house bank. A built-in 200A BMS guards against over-current, short circuit, overcharge, over-discharge and temperature faults, and Bluetooth reports state of charge, voltage, current and temperature in the Vatrer app. Grade A cells are rated for more than 5,000 cycles, and up to four batteries can be wired in series and parallel for large banks. It suits boaters replacing lead-acid start and house batteries, and owners say it is far lighter, runs a fridge and 12V gear for days, and fits tight compartments; the main gripes are short terminal bolts and packs that arrive at uneven charge.
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Lowest price we've seen: $569.99 on Nov 1 at Vatrer. Tracked across 2 stores since Nov 1.
Owners rate it highly, praising the weight saving over lead-acid, long runtime for fridges and 12V accessories, and the Bluetooth app's detail and range. Complaints center on short terminal bolts and batteries arriving at different charge levels.
The Vatrer 12V 300Ah is a dual purpose lithium battery for marine use. It delivers 1500 CCA for engine starting and has 300Ah of deep-cycle LiFePO4 capacity for onboard power. It is built with Grade A LiFePO4 cells rated for more than 5,000 cycles.
A built-in 200A BMS protects against over-current, short-circuit, temperature, overcharge and over-discharge. The battery is tested to UL 1973 safety requirements. Bluetooth connects to the Vatrer app, where you can check state of charge, voltage, current, temperature and status.
The battery supports series and parallel expansion up to 4P4S, up to 61.44kWh. Charging stops below 32°F and resumes automatically when the battery returns to a safe charging temperature. It has no self-heating, so warm the battery before charging in cold conditions.
