12.8V 280Ah Suitcase Battery

Compared to traditional marine batteries, the ULP-12-280 LiFePO4 suitcase battery offers a combination of features that set it apart: IP65 protection against dust and water, no memory effect, excellent stability even under extreme loads, and high performance even in demanding conditions. At 280Ah and 3,584Wh, it is the highest-capacity model in the 12V range, with a max continuous discharge current of 200A — double that of the 100Ah model. The battery is backed by a 5-year manufacturer warranty.

The integrated Battery Management System (BMS) supervises and manages the charge of the battery cells, providing protection against overcharge, overvoltage and overheating. Bluetooth 4.0 connectivity pairs with the ULTIMATRON FRANCE app to keep all key battery data on your smartphone or tablet at all times, with real-time readings of voltage, charge level and operating status. The colour LCD display provides the same information at a glance directly on the battery.

The ULTIMATRON FRANCE app is available on Android (Google Play) and iOS (App Store).
Android app: https://play.google.com/store/apps/details?id=com.zhupi.ultimatron
iOS app: https://apps.apple.com/fr/app/ultimatronfrance/id1546832412

M8 screw terminals are designed to power motors and electrical devices. The battery also includes Anderson SB50 connectors, USB-A, USB-C and a 12V car socket. Nominal voltage: 12.8V. Capacity: 280Ah. Energy: 3,584Wh. Max continuous discharge current: 200A. Recommended charge current: 56A. Max charge current: 200A. Cycle life: 6,000+ at 80% depth of discharge, with optimised charge and discharge efficiency. Weight: 29.2 kg. Dimensions: 410 x 285 x 270 mm.

Why it's on Volta
LiFePO4 technology is one of the cleanest available in the lithium family. No lead, no cobalt in the cathode, and with 6,000+ cycles and no memory effect, a single battery replaces what would otherwise be a succession of shorter-lived alternatives. On a boat, that means fewer replacements, less waste, and a direct step away from the lead-acid batteries that have dominated marine use for decades. At Volta, we list components that make sustainable boating more practical. This battery is one of them.