MARINE STARTER BATTERY - This powerful 12V lithium cranking battery is designed for 250hp - 450hp engines and can be used by smaller engines as well. It delivers 1400 cranking amps and charges 5 times faster than lead-acid batteries. Never worry about your engine failing to start again thanks to the unique emergency start function which saves 25% of the battery reserve for emergencies. LONG CYCLE LIFE - Lithium batteries can achieve over 3000 cycles at 80% depth of discharge, outlasting lead-acid batteries by 2-4X! Experience up to 5x faster charging and a more steady voltage output than standard lead-acid options. This 12v lithium energy efficient with a 99% Depth of Discharge (DOD) and will provide reliable results for years to come. LIGHTWEIGHT - Weighing in at just 14.6lbs, this cranking battery is remarkably lightweight for the power it delivers. Compared to lead-acid batteries with the same power, this battery weighs less than half as much, saving you gas money! Minimize space used in your center console and save your back from lugging around a heavy lead-acid battery thanks to this 12V lithium battery ADVANCED CAPABILITIES - This 12V lithium cranking battery is equipped with bluetooth technology and an Advanced Battery Management System (BMS). The BMS protects against overcharging and overheating and maximizes efficiency. The bluetooth capability allows you to connect your smartphone and see the battery's status 12V 1400 CA LiFePO4 DETAILS - This 12V cranking battery has a capacity of 40Ah/512Wh with 1400 cranking amps (1100CCA). This lithium marine battery has a 14.6V max charge voltage and an 8V cut-off voltage. The lithium battery measures 9.1" x 6.9" x 7.5" (230 x 175 x 190 mm) and weighs 14.6lbs (6.6kg). Featuring bluetooth connectivity and an emergency start function, this LiFePo4 battery will provide a reliable charge for years to come. This high-performance cranking battery is ideal for engines from 250hp to 450hp, offering 1,400 cranking amps while being 70% lighter than lead-acid alternatives. It boasts a long service life of 3,000-5,000 cycles, advanced features like Bluetooth status monitoring, and an Advanced Battery Management System (BMS) for enhanced safety. With 99% Depth Of Discharge (DOD) and an emergency start function, it ensures reliable energy efficiency and emergency readiness. Weighing just 14.6 lbs, it’s easy to install and takes up less space. This LiFePo4 battery has an 8V cut off voltage and provides 1100 cold cranking amps and 1400 peak cranking amps. The operating temperature is between -4 - 140 degrees Fahrenheit (-20 - 60 degrees Celsius), making it a great choice for all seasons.