At 12V, a 300Ah LiFePO4 battery holds around 3840Wh, about half again what a 200Ah gives you. If you run a lighter setup, 200Ah lithium batteries save weight and money. If you're planning air con or induction cooking, step up to 400Ah lithium batteries. For tight spaces, see slimline lithium batteries, and the wider touring range is in lithium batteries for camping.
Our Range of 300Ah Lithium Batteries
We stock 300Ah lithium batteries from brands trusted on Aussie caravans and 4WDs:
- Custom Lithium batteries: 310Ah in compact, slim, ultra slim and NextGen ultra slim cases, plus a 24V 310Ah, backed by a 7-year warranty.
- Tistar batteries: 314Ah standard and long cases, plus 310Ah and 320Ah slimline packs, with Bluetooth monitoring.
- Renogy batteries: the Core 300Ah with self-heating, and the smaller Core Mini 300Ah.
- K2 batteries: a 304Ah lithium battery and a 314Ah solid-state battery.
- Enerdrive | Dometic batteries: the IP67 B-Tec Ultra 300Ah and the B-Tec Slimline 300Ah.
Who a 300Ah Lithium Battery Suits
- Caravans and camper trailers: Fridge, lights, water pump, diesel heater and a coffee machine on the inverter, with room to spare over a weekend.
- Free campers: A few days parked up without driving, with solar doing the topping up.
- 4WD canopies and trays: A single compact 300Ah pack often fits where two smaller batteries wouldn't.
- 24V builds: Trucks, larger vans and off-grid sheds running a 24V system. Browse all our 24V lithium batteries.
What to Look for in a 300Ah Lithium Battery
Case shape and weight
At this size, the case matters as much as the capacity. Compact packs like the Custom Lithium 310Ah Compact (338 x 190 x 250mm, 25.5kg) and Renogy Core Mini (384 x 194 x 253mm, 25kg) drop into a standard battery box. Ultra slim and slimline packs trade height for length and width so they can sit flat under a bed or stand against a wall, but they tend to weigh more. Measure your space first.
Continuous discharge
Check the continuous discharge rating against your inverter. Across this range it runs from 200A up to 330A. A 2000W inverter is comfortable on most of them, while a 3000W inverter needs a battery rated around 260A continuous or more.
Cold-weather charging
LiFePO4 shouldn't be charged below freezing, so the BMS stops charging when it gets too cold. If you camp in the high country or the desert in winter, a self-heating battery like the Renogy Core 300Ah warms its cells before it accepts a charge.
New to lithium? Start with our guide to choosing lithium batteries for camping.
Why Buy 300Ah Lithium Batteries from Outback SafeTrack
- Free Shipping: Orders over $299* ship free Australia-wide.
- Price Match Guarantee: Found them cheaper? We'll match it.
- Speedy Delivery: 2-10 business days, or a $100 gift voucher if we're late.
- 30-Day Easy Returns: No restocking fees on eligible returns.
- Expert Support: We'll help you pick the right case, capacity and charging for your setup.
Ready to Upgrade to a 300Ah Lithium Battery?
Browse the 300Ah lithium batteries above and check the case against your space. Call 1300 902 361 if you'd like a hand choosing.
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