LiFePO4 12v 18Ah lithium iron phosphate battery to replace 12Ah lead in uninterruptible power supplies, security systems, low-current electric vehicles, toys, and other devices that use lead-acid batteries. Type LiFePO4 Nominal voltage - 12.8v Operating voltage range - 10.8V - 14.4v Charging voltage in cyclic mode - 14.1-14.4v Charging voltage in buffer mode - 13.6-13.8v Maximum charging current - 1C (18A) Rated charging current - 0.2C (3.6A) Maximum discharge current - 2C (36A) up to 10 minutes Rated discharge current - 1C (18A) Charge temperature range - (0 + 45 ° C) Discharge temperature range - (- 10 + 60 ° C) Internal resistance 20 mΩ (AC 1000Hz) Weight 1970 g Type of charging SS / SV Protection board yes (recharge, recharge, short circuit protection, balancing) Housing - ABS plastic Standard terminals F2. Dimensions - 151 * 100 * 94mm (with 98mm contacts) Lithium iron phosphate batteries (LiFePO4) are compatible with most types of chargers designed to work with lead-acid batteries. Service life in the buffer mode LiFePo4 - 10 years. Or in cyclic mode after 2000 cycles (full) at rated charge and discharge currents, the residual capacity is 70%. Store at 50% charge. There are other batteries, see my ads.