Grade A Cells: LOSSIGY lifepo4 lithium batteries are manufactured of auto grade-A cells with higher energy density, more stable performance&greater power.Last for 10 Year: LOSSIGY battery provides at least 4000 cycles. The built-in BMS effectively protects the electric core from damage caused by high temperature, low temperature, short circuit, over-current and overload.Easy to install: LOSSIGY 12V 280AH lifepo4 battery is easier to install and move compared to traditional series lead-acid batteries.Amazing BMS System: LOSSIGY's lifepo4 is a battery management system composed of high-end chips, which allows for automatic balancing within the battery. These batteries can be safely connected in parallel or series to form a larger capacity 48V battery banks.LOSSIGY's Commitment: LOSSIGY provides every customer with 90 days of worry free after-sales service and 24-hour online professional technical support. Regardless of any issues you may have, we promise to provide the fastest possible solution