12V 300Ah Essential Series LiFePO4 Battery (3.84kWh)

Yes. A single Epoch 12V 300Ah Essentials battery provides 3.84kWh of stored energy, which is equivalent to three 12V 100Ah lithium batteries. Using one 300Ah battery can save space, reduce overall wiring complexity, simplify battery balancing under one BMS, and eliminate the need to route thick parallel cables between multiple smaller batteries.

Epoch uses high-density LiFePO4 cell technology and an efficient internal layout to fit 300Ah of capacity into a compact Group 31 footprint. The battery measures 13.75 inches long at the base, 7.63 inches wide, and 10.00 inches high, with 10.5 inches of height including terminal bolts and 15.5 inches of length at the handles. Always verify tray, hatch, terminal, and cable clearance before installation.

This battery has a 200A maximum continuous discharge rating and a 400A peak discharge rating for up to 3 seconds. At 12.8V nominal, 200A is about 2,560W of DC output before inverter losses, so a single battery is commonly suited for 12V inverter systems in the 2,000W to 2,400W class when installed with proper cabling, fusing, inverter sizing, and load management. For sustained loads, 150A (0.5C) is the recommended discharge current.

Charging lithium cells below freezing can damage them, so the BMS never starts charging while any battery temperature reading is below 0°C (32°F). Instead, a connected charger supplying at least 0.5A powers internal heating pads, using incoming charge current only and never the battery's stored energy. Charging resumes automatically once the battery reaches 5°C (41°F). The heating system is tested to −20°C (−4°F) and rated for external ambient temperatures down to −40°C (−40°F).

The 12V 300Ah Essentials battery has an IP54-rated enclosure. That means it is dust-protected and splash-resistant for everyday RV, marine house-power, and mobile use. It should not be submerged, pressure-washed, or installed where standing water can collect around the battery.

No. The Epoch 12V 300Ah Essentials is a dedicated deep-cycle LiFePO4 battery designed for house power, inverters, appliances, trolling motors, lighting, pumps, and other prolonged 12V loads. It is not designed to provide the instantaneous cold cranking amps required to start gas or diesel engines. For starting applications, use a cranking-rated or dual-purpose battery that matches your engine manufacturer’s requirements.

Yes. The 12V 300Ah Essentials battery supports a maximum configuration of 4 batteries in series and 4 batteries in parallel, or 4S4P. You can wire two matched batteries in series for a 24V system, four matched batteries in series for a 48V system, or up to four matched batteries in parallel for a 1,200Ah 12V bank. Follow Epoch’s installation guidance and use matched batteries of the same model, age, capacity, and state of charge.

Yes. A BMS-integrated shunt measures current with 0.2A accuracy on discharge, and the built-in Bluetooth module sends state of charge, voltage, current, temperature, and battery status to the free Epoch Li-Ion app for iOS and Android. The Bluetooth security PIN is printed on the battery's lid; you can change it in the app under Advanced Settings.

For long-term storage, charge the battery to about 50% state of charge, disconnect loads and chargers, and store it clean and dry at 0°C to 35°C (32°F to 95°F) where practical. Check the state of charge at least every 3 months and recharge as needed.