Second generation lithium-ion battery combines the latest in LiFeP04 cell technology and an onboard cell management system; Full function internal BMS (battery management system) provides individual cell voltage protection and cell balancing function. Allows quicker recharge with up to 10A current. Has LED readout showing voltage, % charged and battery temp in Celsius. Two (2) Year Warranty. MUST be charged ONLY with a lithium charger. See our Optimate offerings below. See Options: 2009-12 V7s -OR- 2013-current V7-V9 models. Generally not stocked, brought in on paid order only, allow 1-2 busines days to have ready to ship.