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This is a 12V 300Ah LiFePO4 house battery with a 300A BMS, an active cooling fan and self-heating for cold-weather charging. Its 3840Wh capacity and 300A continuous output let one battery run a large inverter and heavy RV loads without paralleling several smaller units. The cooling fan and SPCC metal case target sustained high-current use, where BMS heat is the usual limit. It suits big Class A and fifth-wheel rigs and off-grid setups with high-draw appliances; smaller trailers and light users get more capacity and current than they need, and the fan adds a moving part that sealed rivals lack.
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Lowest price we've seen: $799.99 on Nov 11 at Amazon. Tracked across 1 store since Nov 11.
Owner feedback on Vatrer's heated 300Ah battery is limited but generally positive, with buyers citing the high continuous output and cold-weather heating as the main reasons to choose it. Complaints center on weight and on the fan as an extra failure point.
This is a 12V 300Ah lithium battery for RV and off-grid power systems. It stores 3840Wh of energy and uses a 300A BMS for continuous high-current output, such as microwaves, coffee makers, air conditioners and inverters. The housing is SPCC. The pack contains two batteries.
A cooling fan moves heat away from the BMS board during sustained high-current discharge. The battery is also self-heating. When cell temperature is below 32°F, charging input goes to an internal heating film. Once the temperature rises above 41°F, heating stops and normal charging begins automatically.
The battery can be recharged from shore power with a 14.6V 40A LiFePO4 charger. It can also be charged from solar panels with an MPPT controller, or from a generator through a DC-to-DC charger. The Vatrer app shows SOC, current, temperature, power, cycle information and individual cell status. The built-in BMS provides over-current, short-circuit, over-charge, over-discharge, and high- and low-temperature protection. Batteries can be connected in configurations up to 4S4P.
