The Enerdrive B-TEC 300Ah Lithium Battery is a robust 12V deep cycle battery designed for mobile and off-grid power needs including camper trailers, caravans, 4WD auxiliary systems, and small marine craft. Although this Generation 2 model has been superseded by the B-TEC Ultra 300Ah (G3), it remains a reliable option for those requiring a powerful, lightweight, and intelligently managed lithium battery.
Quick Facts & Specifications
- Capacity: 300Ah at 12V (deep cycle)
- Max continuous discharge current: 200A; peak 250A (15 minutes)
- Max charge current: 190A (30 minutes)
- Battery Management System (BMS) with overcharge, over discharge, temperature and short circuit protection
- Dimensions: 521mm (L) x 280mm (W) x 238mm (H)
- Weight: Approx. 50% lighter than equivalent AGM batteries
- RS485 communication port for CANBus integration and wireless smartphone monitoring
- Comes with a mounting tray and 2 hold-down straps
- 5 year warranty with lifetime technical support
Why Trust the Enerdrive B-TEC 300Ah Lithium Battery?
- Australian designed and tested with over 8 years of lithium battery development experience
- Advanced BMS ensures safe, optimised battery performance and longevity
- Wireless smartphone app provides real-time monitoring of battery health and status
Best For
- Camper trailers and caravans needing a high capacity but lightweight power source
- 4WD auxiliary battery systems for extended off-road adventuring
- Small marine craft requiring reliable deep cycle power
- Remote sites and low power communication setups where dependable energy storage is essential
Not Ideal For
- Applications needing battery banks larger than two units paralleled, due to BMS current limits
- High inverter loads exceeding 3000W continuous power which risk damaging the battery management system
- Complex multi-battery systems requiring active cell balancing across many units (consider Enerdrive Pro Series for these)
Smart Monitoring & Battery Management
The Enerdrive B-TEC G2 includes integrated wireless monitoring technology accessed via an Android or Apple app. This app tracks essential data points such as State of Charge (SOC), State of Health (SOH), individual cell voltages, battery voltage, temperature, current (amps), battery status, cycle count, alarms, and detailed event reports.
Built-in Battery Management System monitors and optimises each prismatic cell during normal operation. Protection features include prevention of overcharge, deep discharge, overheating, and short circuits, ensuring safety and maximising battery lifespan under heavy cycles.
A unique feature to the G2 model is the built-in reset button allowing easy revival of a flat battery without external voltage. Just press the button and the battery reactivates within seconds, ready to recharge.
Durability, Size & Weight Advantages
The Enerdrive B-TEC 300Ah G2 offers approximately 60% more usable power than equivalent AGM batteries due to its 80% depth of discharge compared to 50% for AGM types. This means more reliable energy over the same capacity rating.
Its compact dimensions (521mm x 280mm x 238mm) and nearly 50% reduced weight provide substantial advantages in space and transport ease, ideal for caravans, camper trailers and 4WDs where every kilogram and centimetre counts.
Installation is simplified by the included heavy-duty metal mounting tray and two adjustable hold-down straps, helping ensure a secure setup.
Connecting Multiple Batteries
The B-TEC 300Ah G2 can be connected in parallel with one identical battery only, doubling capacity. Using more than two parallel units is not recommended as the BMS functions within the limits of a single battery pack and higher loads may cause premature failure or reduced performance.
For users needing larger, scalable battery systems, Enerdrive’s Pro Series Power Pack Systems provide advanced series and parallel connections with active cell balancing and enhanced protection.
Installation and Integration
This battery includes a metal mounting tray and two hold down straps, making installation straightforward and secure for mobile or stationary use.
The RS485 communication port on top enables easy integration with CANBus systems prevalent in modern caravans, 4WDs and marine vessels. This allows remote battery data monitoring and syncs seamlessly with vehicle or boat management setups.
Conclusion
The Enerdrive B-TEC 300Ah Lithium Battery Generation 2 delivers a proven combination of high capacity, lightweight design and smart monitoring for deep cycle applications. It is highly suited to caravans, camper trailers, 4WD auxiliary setups and small boats where dependable, long-lasting power is essential.
Although superseded by the latest B-TEC Ultra 300Ah, this model remains a trusted option. Make sure your installation respects the limits on maximum inverter load and parallel connections to enjoy safe, reliable performance. Visit the merchant page for the most current product information and compatibility advice.
