First, the Sea-battery technology features: 1, rated working voltage: 2V, 6V, 12V 2, floating charge design life: 6V, 12V up to 12 years, more than 2V for 18 years. 3, active substance: 99.9999 percent of high purity electrolytic refined lead; 4, grid: lead, tin, calcium Multiple corrosion resistant alloy; 5, the nominal temperature: -20 ℃ ~ 50 ℃ 6, safe operating temperature: -40 ℃ ~ 60 ℃ 7, floating voltage (per cell): 2.23 ~ 2.30V (20 ℃ ~ 30 ℃) 8, charge voltage (per cell): 2.33 ~ 2.40V (20 ℃ ~ 30 ℃) 9, charging voltage temperature compensation coefficient: Every single -3mV ~ -5 mV / ℃ 10, a gas compound efficiency: not less than 99.9%. 11, the battery compartment cover material: high strength ABS engineering plastics, flame retardant rating of not less than UL94-HB level. 12, the safety valve: the United States, "Benson" type Ventseal way safety vent valve, the valve is highly reliable aerospace grade EPDM rubber material, the body is a labyrinth structure, can play a dual role of filter acid, may be mist fully recyclable, no acid mist escaping with superior overcharge capacity and overcharge life. Valve opening pressure: 10 ~ 30KPa; closed-valve pressure: 8 ~ 10KPa 14, battery low valve opening pressure design, during use of the valve automatically closes open, ensure safe use. 15, battery terminals: the resistance tiny embedded copper core terminal (terminal section of lead in the battery pack), to avoid problems caused by thermal expansion of the terminal seal damage. Battery positive and negative terminals clearly marked for easy connection. 16, battery wiring board, cables are used excellent conductive properties of copper wiring board having an insulating jacket, has excellent corrosion resistance. 17, the battery using special composite double microporous separator having excellent mechanical strength properties under normal conditions of use without the possibility of an internal short circuit. 18, sealing agent: Between the battery slot and cover special heat-curing silicone - acrylic - epoxy adhesive for bonding; battery sealing agent using a special silicone-modified acrylic epoxy resin as the base material, to ensure that within -40 ℃ ~ + 70 ℃ temperature range, sealing agent to maintain good toughness and sealing performance, there will be cracks and overflow. Battery case bearing capacity of not less than 70Kpa. 19, battery plate occurs often due to the expansion and deformation of seal failure and cause the battery to leak, patented design of the battery bottom inflatable arch bridge support base for the plate temperature change and natural elongation leaving a free space to ease their elongation or shortening of the stress generated by the pole, to avoid battery terminal seal leakage occurs destructive, to ensure the sealing performance of the battery. 20, in the normal floating charge state, 6V & 12V series free 3-year warranty; 2V free 5-year warranty.