Compact 12V 304Ah LiFePO4 Lithium Battery for Camper Vans

Compact 304Ah LiFePO4 lithium battery for camper vans

The higher-capacity version of our under seat range: a LiFePO4 lithium battery, 12.8V and 304Ah (3,891Wh), designed to fit under the seat of your camper van instead of taking up a cabinet or the double floor. If you need more range than 230Ah but want to keep the same space-saving approach, this is your option.

Check the space before buying

This version measures 353×265(280)×189mm, slightly taller than our 230Ah lithium battery (155mm). In vans with a tighter under-seat space — such as some Vito or Transporter models — we recommend checking the available height before ordering; in Ducato and Sprinter, which generally have more room, this usually isn't an issue. If in doubt, contact us with your van's measurements.

Dual BMS: above-average safety

Features a dual cell compartment with independent BMS, an intelligent 12V 250A 3.2KW management system (CAN/485), and a 12V-1A active balancer — the same safety architecture used across the entire LiFePO4 Under Seat range.

Full control from your phone

Built-in Bluetooth and dedicated app (Android/iOS) to check charge status and settings. Compatible with Victron monitoring and inverter communication.

Frequently asked questions

Does it fit under my van's seat?
In Ducato and Sprinter, usually yes. In vans with less under-seat height, check before buying — if you're unsure, also consider our 230Ah lithium battery, which has a lower profile.

How much more range do I get compared to the 230Ah?
32% more capacity (304Ah / 3,891Wh versus 230Ah / 2,944Wh) in a similar format, slightly taller.

What warranty does it have?
3-year legal guarantee against manufacturing defects. Manufactured in-house by CYM-POWER.