12 V 300 Ah Lithium Battery IP67 with BMS - Crosseven

The 12 V 300 Ah IP67 Crosseven Lithium Battery is a lithium house/service battery designed for marine installations where weight and footprint impact overall vessel performance. With 300 Ah capacity and a nominal voltage of 12 V, it supports demanding onboard loads: navigation electronics, lighting, refrigerators, windlasses and auxiliary power.

The integrated BMS (Battery Management System) continuously supervises battery status, protecting against overcharge, deep discharge and over‑temperature. Bluetooth connectivity and the CAN port let you view live operating parameters on a smartphone: state of charge, voltage, current draw, cycle count and temperature. The built‑in heater keeps the battery functional even below 0 °C, a key feature for winter cruising or storage in unheated environments.

The IP67 construction ensures watertightness in case of temporary immersion, shielding internal components from moisture and spray typical of the marine environment. Weight is reduced by 50–60% compared to an equivalent lead‑acid battery.

Main features

• Integrated BMS manages protection from overcharge, deep discharge and over‑temperature, extending service life and reducing the risk of failures on board
• Bluetooth connectivity and CAN port enable remote monitoring via smartphone of all operating parameters: state of charge, voltage, current, temperature and cycle counter
• Built‑in heater keeps the battery operational below freezing, preventing charge/discharge lockout in harsher climates
• IP67 ingress protection guarantees resistance to temporary immersion, suitable for marine environments with frequent humidity and spray
• 50–60% lighter than a comparable lead‑acid battery, with direct benefits to the boat’s stability, speed and range
• UN38.3 certification confirms compliance with international testing for the safe transport of lithium batteries