The Samland 12V 300AH deep cycle lifepo4 battery is a rechargeable lithium battery that uses lithium iron phosphate cell technology for superior safety and thousands of cycles. It features 100% DOD and built-in BMS protection for over-charge, over-discharge, over-current, and over-temperature. The battery has a LCD screen display showing the remaining capacity and is free of maintenance. It also has internal cell balancing and is lighter in weight, about 40% to 50% of the weight of a comparable lead acid battery. The Samland 12V 300AH deep cycle lifepo4 battery can be charged using most standard lead-acid chargers and has a wider temperature range of -20°C to 60°C. It supports series application expansion up to 51.2V and two in parallel. The specifications include 2000 life cycles with 100% DOD, 3500 with 80% DOD, and 6500 with 50% DOD. The power capacity is 3840Wh, nominal voltage is 12.8V, and nominal capacity is available. The max charging voltage is 14.0-14.6V, charging current is 100A, and discharging current is 100A. The max continuous current is 100A, charge temperature is 0°C-45°C, and discharge temperature is -20°C to 60°C. The battery has an IP55 rating for water and dust resistance. The dimensions are available.