Epoch Batteries 12V 334Ah 4.28kWh Essential Series LiFePO4 Battery – Heated Bluetooth Deep Cycle | IP54 | 12334A-H

Need a lot of 12V battery capacity without babysitting your battery bank every time the temperature drops? The Epoch 12334A-H packs 334Ah of LiFePO4 storage into a heated, Bluetooth-equipped battery built for RVs, boats, solar systems, and off-grid setups that see real-world conditions. With 4.28kWh of stored energy, 200A continuous output, and an IP54 enclosure, it’s made for systems that need dependable house power without adding unnecessary fuss.

• Internal Self-Heating for Cold-Condition Charging – When temperatures fall below the safe charging range, the built-in heater automatically steps in. That allows the battery to keep charging in temperatures down to -20°C (-4°F) without you having to constantly watch the weather.

• 200A Continuous Output with 400A Peak – Delivers up to 200A continuously and can handle a 400A surge for 3 seconds, giving larger inverters and demanding DC loads plenty to work with. The smart BMS also keeps an eye on overcharge, over-discharge, over-current, short circuits, and temperature limits.

• Bluetooth Monitoring via iOS & Android – No need to dig into the battery compartment just to see what’s going on. The Epoch app lets you check voltage, current, temperature, battery status, and BMS protection information right from your phone.

• IP54 Outdoor-Ready Enclosure – The dust- and splash-resistant housing makes this battery a comfortable fit in RV compartments, marine installations, and off-grid systems where the environment isn’t always perfectly clean and dry.

• Scalable 4S16P Configuration – Start with one or build around it. Up to four batteries can be connected in series for a 48V system, while as many as 16 can run in parallel for up to 5,344Ah of combined capacity.

With 334Ah on tap, the 12334A-H is aimed at systems where the battery bank is expected to do some actual work. It’s a strong fit for motorhomes running larger inverters, live-aboard boats, off-grid cabins, van conversions, solar storage, and backup systems where you want enough reserve capacity to get through more than a light evening load.

Cold-weather usability is one of its biggest advantages. The heater takes care of low-temperature charging automatically, while low-temp protection prevents the cells from being charged outside their safe operating range. Pair that with the IP54 enclosure and you have a battery that’s much less picky about where and when it gets used.

Bluetooth monitoring keeps the important numbers close at hand, so checking battery condition doesn’t have to mean opening panels or pulling out a meter. And with maintenance-free LiFePO4 chemistry and a rated cycle life of 4,000+ cycles, the 12334A-H is built to spend more time powering the system and less time demanding attention.

The battery uses UL 1642 certified cells and carries CE and RoHS compliance, along with UN 38.3 transport certification for lithium battery shipping. It’s backed by a 6-year warranty for additional peace of mind in residential, marine, RV, and off-grid installations.

Technical Specification