Custom Lithium 200Ah NextGen Ultra Slim Lithium Battery
This is an estimate only. Actual delivery times can vary with stock availability, courier delays, weather, public holidays and your location.
Big Battery Power In A Small Package - The Custom Lithium 200ah NextGen Ultra Slim Packs A Punch
Running out of space but still need serious juice? This next-gen 200Ah Ultra Slim Lithium Battery is an absolute ripper for utes, canopies, and tight installs where every millimetre counts. Don’t let the slim profile fool you, these batteries packs a punch, with enough grunt to run fridges, lights, and even a decent inverter without breaking a sweat. Built tough, built smart, and built right here in Oz.
Ready for serious power without sacrificing precious space? Grab the Custom Lithium 200Ah NextGen Ultra Slim Lithium Battery today and power your next off-grid adventure with confidence.
Get serious capacity into a tight space, add one to your cart today.

Why The Custom Lithium 200Ah NextGen Ultra Slim Lithium Battery May Be Right For You:
- Don't stress about your battery whilst you're driving through those bumpy outback roads. Safety is Custom Lithium's number 1 priority. The 200Ah Ultra Slim Lithium Battery is integrated with A-grade automotive LiFePO4 lithium cells meaning you can rest assured that your battery will be fine, even if your tires are getting a working over.
- Big bulky batteries are a thing of the past, ultra Slim batteries are gaining in popularity, and for good reason! The sleek design of Custom Lithium's Ultra Slim batteries allows them to fit into your caravan, 4x4s and boats seamlessly. Light, slim but powerful, the ultra slim battery is a great alternative for when you're short on space.
- Worried about your battery sliding all over the place? Worry no more as mounting Side Rails are included in this package. Simply mount your new ultra slim battery inside of your caravan, 4-wheel drive or boat to keep your battery intact.
- Great for powering your Star link connections, 240V inverters, your fridges, induction cookers, air compressions, computers, cameras, lights and much more.
- Custom Lithium stand by their products because they know that they are of high quality. That's why each purchase of one of their batteries comes with a 7 year warranty! Every single battery is individually bench-tested, so you know that you're getting a quality product.
- Your battery ain't taking a battering. All components of the battery are insulated against vibration meaning those bumpy roads won't damage your battery.
- Worry less about overheating and short-circuiting. Custom Lithium Batteries are equipped with BMS protection to ensure that your battery maintains performance throughout your journey.
- You're supporting the local economy by buying local. All Custom Lithium Batteries are made here in Australia.
Custom Lithium 200Ah NextGen Ultra Slim Lithium Battery Installation:
If you are unsure about installation, please contact us on 1300 902 361 for assistance, or alternatively please reach out for us to organise an installation.
*Improper installation will void your warranty and may result in injury.

Custom Lithium 200Ah NextGen Ultra Slim Lithium Battery Tech Specs
Custom Lithium 200Ah NextGen Ultra Slim Lithium Battery FAQs
1. What can the Custom Lithium 200Ah NextGen Ultra Slim Battery power?
The 200Ah battery is designed for demanding 12V off-grid setups in caravans, 4WDs, canopies and boats. It can power equipment such as fridges, lights, Starlink, computers, air compressors, induction cookers and compatible inverters.
2. Does the 200Ah NextGen Ultra Slim Battery require assembly?
No major assembly is required. The battery includes mounting side rails to assist with installation. For installations in a canopy, caravan or similar setup, professional installation by a qualified auto electrician is recommended.
3. What safety features does the battery have?
The battery uses premium A-grade automotive LiFePO4 cells and features a Battery Management System (BMS) with active balancing. The BMS helps protect the battery against conditions such as overheating and over-discharge while supporting balanced cell performance.
4. What warranty comes with the Custom Lithium 200Ah NextGen Ultra Slim Battery?
The battery is backed by a 7-year warranty, providing added peace of mind for long-term use.