Lifepo4 Storage Battery 1.Maintenance free. Suitable for installation of communication cabinet. 2.Life span is more than 4000 cycles at 100% DOD 3.Bulit in BMS. Has multiple protection and communication functions to ensure the reliability of the battery pack and achieve remote monitoring real time date of batteries. 4.Wide temperature range and high reliability 5.Small internal resistance,superior performance 6.Multiple battery packs can be connected in parallel,suitable for high energy applications