Battery lithium iron phosphate LiFePO4 36v (38.4v) 12Ah The best replacement for 3 lead batteries 12v 12ach, there is no need to buy a new charger (if it is working). Fireproof. Work at low temperatures. Type LiFePO4 Rated voltage - 38.4v Operating voltage range - 30 - 43.8v Charge voltage - 42 -43.8v Maximum charging current - 0.5C (6A) Rated charging current - 0.2C (2.4A) Maximum short-term discharge current - 20A Rated discharge current - 1C (12A) Charge temperature range - (0 + 45 ° C) Discharge temperature range - (-10 + 60 ° C) Internal resistance ≤ 60 mΩ (AC 1000Hz) Weight 4kg Charging type SS / SV There is a protection board (recharging, recharging, balancing) The case is tightened PVC. XT60 connector (JY60) Dimensions 245 * 145 * 78mm Lithium iron phosphate batteries (LiFePO4) are compatible with most types of chargers designed to work with lead-acid batteries. 42v charging is suitable. Cyclic operation time after 2000 cycles (full) at rated charge and discharge currents, residual capacity 70%. Store at a charge level of 50%. There are other batteries, see my ads.