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Enerdrive BTEC LiFePO4 Slimline 12V 400Ah Deep Cycle Battery in Compact Metal Case Off Grid Marine

SKU EPL-400BTM-12V
Sale Sale
Original price $7,100.99
Original price $7,100.99 - Original price $7,100.99
Original price $7,100.99
Current price $6,555.55
$6,555.55 - $6,555.55
Current price $6,555.55

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Estimated delivery time: 2-3 days

Enerdrive B-TEC LiFePO4 Slimline Battery — 12V 400Ah Deep-Cycle Power in a Compact Metal Case

Meet the Enerdrive B-TEC LiFePO4 Slimline Battery — a 12V, 400Ah deep-cycle powerhouse packed into a compact metal case. Designed for off-grid, marine, and mobile installations, it frees up space without compromising runtime, longevity, or safety.

  • Ultra-compact footprint: W 630 mm × H 498 mm × D 216.5 mm, delivering 400Ah in a slim metal enclosure.
  • End-mounted connections & remote reset: All power connections and communications ports sit at one end; the reset button can be mounted remotely to simplify maintenance while preserving a tight, water-resistant seal.
  • Water-conscious enclosure: IP52-rated metal case with blind fittings, rubber seals, and overlapping joints to minimize water ingress in challenging environments.
  • Future-ready communications: RJ45 remote ports with CAN output for seamless system integrations as your install evolves.
  • Smart monitoring via Enerdrive app: Track Battery Capacity, Voltage, Current, State of Charge (SOC), State of Health (SOH), individual cell voltages, temperature, cycles, alarms, and event history from your smartphone or tablet.
  • 12.8V nominal LiFePO4 chemistry: Stable, long-lasting performance with a generous 400Ah capacity, ideal for bursts of solar charging and extended discharges in off-grid scenarios.
  • Deep-cycle performance: Designed for repeated charging and discharging with a robust charging profile to maximize every watt.
  • Charging & float specs: Charge voltage 14.20–14.60V (CV/CC); Float voltage 13.50–13.80V.
  • Max charge current: Up to 150A at 25°C for up to 30 minutes to speed up top-ups from solar or shore power.
  • Long cycle life: ≥2000 cycles at 80% DoD under controlled conditions for durable, reliable service.

With its 400Ah capacity in a space-saving slimline design, this battery delivers longer runtimes between charges, faster top-ups from solar or shore power, and reliable performance in humid or wet environments thanks to the rugged IP52 enclosure. The remote reset option simplifies maintenance in tight installations, while end-based port layout keeps cabling neat and upgrade-friendly. Enerdrive’s app-enabled monitoring puts visibility of SOC, SOH, temperatures, and alarms in the palm of your hand, helping you optimize your off-grid or mobile energy system with confidence.


Normal Specification EPL-400BTM-12V
Nominal Voltage 12.8V
Nominal Capacity 400Ah
Cycle Life (DOD – 80% under controlled conditions) ≥ 2000 Cycles
Standard Charge Specification (Lithium profile charger required)
Battery Charge Temperature 0 ̴ 45°C
Normal Charge Voltage CV/CC* 14.20 ̴ 14.60V
Standby (Float) Voltage 13.50 ̴ 13.80V
Maximum Charge Current 150A @ 25°C for 30mins
Recommended Charge Current for Maximum Life 60A-120A
Standard Discharge Specification
Battery Discharge Temperature -20 ̴ 60°C
Battery Output Voltage Range 11.00 ̴ 14.60V
Maximum Discharge Current 250A@25°C ± 5°C for 30mins
Pulse Discharge Current 450A for 1.0s
Discharge Cut-off Voltage ≤11.20V
Circuit Protection The battery is supplied with a LiFePO4 Battery Management System BMS that can monitor and optimize each single prismatic cell during charge & discharge, to protect the battery pack from overcharge, over discharge & short circuit. Overall, the BMS helps to ensure safe and accurate operation of the battery.
Over-Charge Protection
Over-charge Protection Per Cell 3.75V ± 0.03V
Over-charge Release Per Cell 3.60V ± 0.05V
Over-charge Release Method Discharge below release voltage
Over-Discharge Protection
Over-discharge Protection Per Cell 2.80V ± 0.05V
Over-discharge Release Per Cell 3.20V ± 0.05V
Over-discharge Release Method Apply Charge/Voltage ≥12.8V
Over Current Protection
Discharge Over Current 280A for 25s – 400A for 3.5s
Protection Reset Time 5s Auto Release
Over Current Release Method Disconnect Load
Over Temperature Protection
Battery Discharge Over Temperature Protection to 65°C ± 5°C
  Release at 50°C ± 5°C
Battery Charge Over Temperature Protection to 55°C ± 5°C
  Release at 45°C ± 5°C
Short Circuit Protection Auto release after 5s
Mechanical Characteristics
Dimensions Length 630mm
  Depth 216.5mm
  Height 498mm
Weight Approx 60 Kg
Case Construction Powder Coated Zinc Plate
Storage Information
Temperature & Humidity Range ≤ 30 days -20°C ̴ 60°C, 5 ̴ 75% RH
  ≥ 30 days -10°C ̴ 45°C, 5 ̴ 75% RH
Self-discharge Rate ≤ 3% Per Month
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