For 4×4 owners, space and weight are often just as important as raw power. The Custom Lithium Ultra Slim series delivers high-capacity lithium batteries in a compact format, designed to fit into tight spots in vehicles, camper trailers, or canopies.

The range spans from 100 Ah to 310 Ah options, letting users choose the right size for their setup. Smaller capacities are useful for short trips or running a fridge and lights, while the larger batteries can support longer tours with multiple appliances.

These batteries use LiFePO₄ (lithium iron phosphate) cells, which provide long life, stable voltage, and consistent performance. Each unit has a Battery Management System (BMS) to protect against overcharging, over-discharging, and overheating – features that are particularly useful for off-road conditions and remote campsites.

The slim design makes them easy to fit under seats, behind panels, or in canopy compartments, while the reduced weight frees up payload for gear and supplies. For 4×4 drivers, this combination of compact size, light weight, and reliable capacity makes installation simpler and setups more efficient.

In practical terms, the Ultra Slim batteries can run fridges, lights, water pumps, and other accessories without the usual limitations of older lead-acid batteries. They also maintain steady power throughout the discharge cycle, so your gear operates consistently until the battery is almost empty.

For anyone spending time off the beaten track, the Custom Lithium Ultra Slim series provides a dependable, space-conscious solution to power your 4×4, camper, or off-grid setup – keeping your gear running reliably no matter where the journey takes you.

More info at Custom Lithium