REGO 12V 400Ah Lithium Iron Phosphate Battery (5.12 kWh)
Overview
The REGO 12V 400Ah is a high-capacity lithium iron phosphate (LiFePO4) battery designed for off-grid, marine, RV and mobile power applications. It delivers 5.12 kWh of usable energy, supports parallel expansion, includes an intelligent BMS and built-in Bluetooth, and features self-heating and an IP65-rated aluminum housing for reliable performance in a wide range of conditions.
Benefits
Keep devices and systems running longer between charges — 5.12 kWh gives you more usable energy per battery.
Simplify system setup and save space — a single REGO replaces multiple 12V lead-acid batteries, reducing installation footprint and cable clutter.
Charge and use in colder environments without worry — automatic self-heating helps maintain charging capability in low temperatures.
Monitor health and status easily — built-in Bluetooth lets you check performance and diagnostics from your phone.
Count on long service life — up to 6,000 cycles at 80% depth of discharge means years of reliable capacity for everyday use or full off-grid living.
Features
5.12 kWh energy capacity (12V, 400Ah).
Parallel expansion up to 8 batteries for larger capacity systems (max recommended 8 in parallel).
Automatic self-heating heater that activates when temperature is below ~5°C and charge current is stable above 15A.
Smart BMS with 62 protection functions for voltage, current, temperature and cell balancing.
IP65 waterproof protection and vibration-resistant aluminum housing suitable for marine and outdoor use.
Built-in Bluetooth (and CAN support) for app monitoring and diagnostics.
Plug-and-play parallel cable option for easier connection to the REGO system.
Optional 4/0 AWG Anderson adapter cable available (1 ft, Anderson 350 connector compatible).
Specifications
Battery type: Lithium Iron Phosphate (LiFePO4).
Rated capacity: 400 Ah.
Nominal voltage: 12 V.
Energy: 5,120 Wh (5.12 kWh).
Voltage range: 10 – 14.8 V.
Charge voltage: 14.4 V (charge cut-off 14.8 V).
Maximum continuous charge current: 300 A.
Maximum continuous discharge current: 350 A.
Discharge cut-off voltage: 10 V.
Cycle life: 6,000 cycles at 80% DOD (tested at 0.5C, 25°C).
Connection method: Parallel (up to 8 identical batteries).
Self-heating: Yes — heater engages below ~5°C (41°F) when charge current >15 A.
Bluetooth: Built-in for monitoring via mobile app; also supports CAN (RV-C) communication.
Protection: Smart BMS with 62 protection features (over/under voltage, overcurrent, temperature, balancing, etc.).
Protection rating: IP65 (dust-tight and water-resistant to low-pressure jets).
Housing material: Die-cast and extruded aluminum (vibration-resistant).
Dimensions: 18.0 x 10.5 x 13.0 in (457 x 267.2 x 329 mm).
Weight: 112.4 lb (51 kg).
Operating (discharge) temperature: -20°C to 60°C (-4°F to 140°F).
Operating (charge) temperature: -20°C to 50°C (-4°F to 122°F).
Storage temperature:
Up to 1 week: -30°C to 60°C (-22°F to 140°F).
Up to 6 months: -20°C to 45°C (-4°F to 113°F).
Warranty: 5-year prorated material and workmanship warranty.
Optional accessory (4/0 AWG Anderson adapter cable): Length 1 ft, 4/0 AWG, 3/8" terminal, max 405 A, rated 600 V, temperature range -40°C to 150°C.
Replacement guidance: Do not mix with lead-acid batteries or batteries of different capacity, voltage or chemistry; series connection is not supported — parallel only with identical REGO batteries.
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