Need maximum power without giving up precious space? The Enerdrive EPL-400BTM-12V Slimline packs an impressive 400Ah into a compact, water-resistant housing, making it the ultimate lithium solution for serious off-grid setups. Ideal for caravans, 4WDs, and marine systems, this smart battery combines high performance, advanced protection, and a sleek design that fits where other batteries can’t.

Enerdrive 12V 400Ah Battery: High Capacity in a Slimline Footprint

The Enerdrive EPL-400BTM-12V is a powerhouse battery built for demanding deep cycle applications. With a slim 216.5mm depth and all terminals and ports positioned on one end, this battery is built for custom installs where space and accessibility matter. It offers long-term reliability, efficient energy delivery, and intuitive Bluetooth control—backed by a 5-year warranty and the quality of Australia’s most trusted lithium battery brand.

Enerdrive Slimline Lithium Battery: Monitor & Manage Like a Pro

Download the Enerdrive app on your Android™ or Apple® device to access full battery diagnostics in real time:

• Battery Capacity, Voltage & Current (Amps)
• State of Charge (SOC) & State of Health (SOH)
• Individual Cell Voltage Readouts
• Battery Temperature & Cycles
• Alarms & Historical Event Logs

The internal Battery Management System (BMS) continuously balances and protects each prismatic cell, preventing damage from overcharging, deep discharging, high temperature, and short circuits. A remote reset port (button not included) allows for an easy restart if the battery is fully discharged—ideal for concealed installations.

Enerdrive B-TEC 12V 400Ah Lithium Battery vs AGM: Smarter, Smaller, Stronger

This lithium battery delivers more power per kilogram and cubic millimetre than traditional AGM options:

• 400Ah Lithium = 640Ah AGM Equivalent
• 60% more usable energy
• Over 2500 cycles at 80% Depth of Discharge
• Nearly 50% lighter and 30% more compact

Its IP52-rated metal casing features overlapping sealed frames, blind bolts, and protective rubber interfaces—offering solid water resistance for internal installations.

Expand Your System with Confidence

The EPL-400BTM-12V supports up to four batteries in parallel for high-capacity builds. It’s compatible with inverter systems up to 3000W—exceeding this limit can damage the BMS. All connection points, comms ports, and reset inputs are grouped on one end of the battery for streamlined wiring and safer installations.

Note: This battery is designed for internal use only. Do not install in engine bays, wet or exposed compartments, or in proximity to gas systems.

What’s Included & Why It’s Australia’s Top Choice

Each purchase includes:

• 1 x Enerdrive EPL-400BTM-12V 400Ah Slimline Lithium Battery

Backed by a 5-year warranty and more than a decade of field-proven performance, Enerdrive’s B-TEC Slimline series is trusted across Australia for mobile, marine, and off-grid energy systems that demand efficiency, durability, and intelligence.

Nominal Voltage: 12.8V

Nominal Capacity: 400Ah

Charge Cycles (DOD – 80%): >2500 Cycles

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 30 minutes

Recommended Charge Current: 60A – 120A

Battery Discharge Temperature: -20 ~ 60°C

Battery Output Voltage Range: 11.00 ~ 14.60V

Maximum Discharge Current: 250A @ 25°C ±5°C for 30 minutes

Pulse Discharge Current: 450A for 1.0s

Discharge Cut-off Voltage: <11.20V

Circuit Protection: Supplied with a LiFePO4 Battery Management System (BMS) that monitors and optimizes each prismatic cell during charge and discharge. Protects against overcharge, over discharge, and short circuit for safe and accurate battery operation.

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 Per Cell: 2.80V ± 0.05V

Over-Discharge Release Per Cell: 3.20V ± 0.05V

Over-Discharge Release Method: Apply Charge / Voltage >12.8V

Discharge Over Current: 280A for 25s / 400A for 3.5s

Protection Reset Time: 5s Auto Release

Over Current Release Method: Disconnect Load

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

Length: 630mm

Depth: 216.5mm

Height: 498mm

Weight: Approx. 60 kg

Case Construction: Powder Coated Zinc Plate

Storage (≤30 days): -20°C ~ 60°C, 5 ~ 75% RH

Storage (>30 days): -10°C ~ 45°C, 5 ~ 75% RH

Warranty: 5 Years