Enerdrive 300Ah B-TEC ULTRA 300Ah G3 Lithium Battery – 5 Year Warranty
Australia’s Most Advanced High-Capacity Lithium Battery for Off-Grid Power
Need serious battery capacity for extended off-grid travel? The Enerdrive B-TEC ULTRA 300Ah Lithium Battery is designed for users who demand maximum runtime, uncompromising safety, and all-weather reliability.
This is the next-generation Ultra upgrade of the popular Enerdrive B-TEC 300Ah lithium battery—stronger, smarter and built to handle Australia’s toughest environments.
Whether you’re running a large caravan, touring 4WD, off-grid cabin or marine setup, the B-TEC ULTRA 300Ah delivers dependable power without cutting corners.
What Makes the B-TEC ULTRA 300Ah Different?
Extreme Protection for Harsh Conditions
Can a lithium battery survive dust, water and vibration?
Yes—this one is built for it.
The B-TEC ULTRA features an IP67 waterproof and dustproof rating, allowing it to be submerged in up to 1 metre of water for 30 minutes while remaining 100% sealed against dust ingress.
This makes it ideal for external mounting in:
-
Caravans & motorhomes
-
4WDs & touring vehicles
-
Camper trailers
-
Marine & off-grid installations
No need to worry about rain, river crossings, corrugations or red dust—this battery is built to endure.
Massive Power for High-Demand Applications
Is a 300Ah lithium battery worth it?
If you run high-load appliances, absolutely.
The Enerdrive B-TEC ULTRA 300Ah is engineered to handle heavy electrical demands with ease, making it perfect for powering:
-
Large inverters
-
Induction cooktops
-
Air conditioners (via inverter systems)
-
Compressors & winches
-
Fridges, freezers & full 12V setups
Need even more capacity? The scalable design supports up to 4 batteries in series and 4 in parallel, allowing you to build a powerful custom energy system.
IEC62619 Certified – Industry-Leading Lithium Safety
Is this lithium battery safe for caravans and 4WDs?
Yes—certified safe at the highest level.
The B-TEC ULTRA 300Ah is IEC62619 certified at both the cell and battery pack level, meeting strict international safety standards required in professional and industrial environments.
What does IEC62619 certification protect you from?
-
Electrical faults & short circuits
-
Mechanical damage from impact or crush
-
Thermal runaway & overheating
-
Overcharging & excessive discharge
Many budget lithium batteries bypass this certification. Enerdrive doesn’t. The result is verified safety from the inside out, especially critical when travelling remotely.
Intelligent Battery Management System (BMS)
At the core of the B-TEC ULTRA is a high-performance Battery Management System that actively protects and balances every cell.
BMS features include:
-
Over-charge & over-discharge protection
-
Short-circuit & thermal shutdown
-
High & low voltage cutoff
-
Temperature-controlled charging
This ensures long battery life, stable performance and safe operation in all conditions.
Integrated Cell Heater for Cold-Climate Charging
Can lithium batteries charge in freezing temperatures?
Not usually—but this one can.
The B-TEC ULTRA 300Ah includes an automatic internal cell heater, controlled by the BMS, which warms the battery to safe charging temperatures when conditions drop below zero. Ideal for alpine regions, winter travel and cold overnight conditions.
Bluetooth Monitoring with Enerdrive B-TEC App
Stay fully informed with wireless Bluetooth monitoring using the Enerdrive B-TEC App (iOS & Android).
Track real-time data including:
-
Battery voltage, current & state of charge (SOC)
-
Internal temperature & cycle count
-
Individual cell voltages
-
System warnings & fault alarms
-
Event logs & diagnostics
Know exactly how your battery is performing—anytime, anywhere.
Designed for Practical, Real-World Use
The B-TEC ULTRA 300Ah is packed with features that make installation and operation easy:
-
Integrated On/Off isolation switch
-
Built-in LED charge display in 25% increments
-
Visual fault indicators on the battery
-
Battery tray & mounting strap included
Everything is designed to save time and improve safety.
Backed by Australian Support & 5-Year Warranty
Every Enerdrive B-TEC ULTRA battery is backed by a 5-year warranty and lifetime technical support from an experienced Australian team—so help is always available when you need it.
More Power. More Confidence. Less Compromise.
The Enerdrive B-TEC ULTRA 300Ah Lithium Battery is the ultimate high-capacity solution for serious off-grid energy systems. Built to perform where others fail—this is lithium power you can trust.
