Tcbworth deeply committed to delivering excellent durable lifepo4 batteries for more diverse applications. The 12.8V 300ah lifepo4 battery have a tough exterior l15.16*W7.5*H9.65 Inch it is built to last and stand the test of time. Our lifepo4 lithium battery is protected from overcharging over-discharging over-current and short-circuiting as well as high-temperature cutoff it s safety and reliability. We provide 10 years warranty and 24 hours after-sales service for the customer.