300Ah Deep Cycle Lithium

When you're running serious power setups in your 4WD or camper trailer, a 300Ah deep cycle lithium battery gives you the capacity to stay off-grid longer without worrying about dropping below safe discharge levels.

Our 300Ah lithium batteries use LiFePO4 chemistry, which means they're built for thousands of cycles even when you're regularly draining them to 80% depth of discharge. That's the kind of longevity that makes sense when you're investing in a serious power system. At just ~27kg, they're also remarkably light compared to traditional AGM batteries with similar capacity, making them easier to install and better for your vehicle's payload.

Each battery comes with an integrated battery management system that handles thermal protection, overload protection, and high/low voltage cutoff automatically. No babysitting required. You can link multiple batteries in parallel for even more capacity, or wire them in series if you're building a 24V system. Either way, you're getting reliable power that'll keep your fridge cold, lights on, and devices charged for extended trips.

These batteries work seamlessly with quality DC-DC chargers and solar panel setups, so you can charge while driving and keep topping up when you're parked. If you're stepping up from a smaller setup, check out our 200Ah lithium range as well, or browse the full range of lithium battery options to find what suits your power needs.

Why choose 4WD Supacentre for your 300Ah lithium battery?

• Quality guaranteed - Tested in real Australian conditions with integrated BMS protection
• Expert advice - Our team understand power systems and can help you get the right setup
• Fast delivery - Australia-wide shipping plus Click & Collect at 42+ stores
• Great value - Serious capacity without the premium price tag
• Peace of mind - 3-year warranty and 30-day change of mind guarantee

Ready to upgrade your power system? Browse our 300Ah deep cycle lithium range and build the setup that'll keep you out there longer.