We are a manufacturer to make lead-acid battery over 10 years.Our battery has passed UL&CE,IEC 60896,IEC1056,ISO9001-2000,UL No is MH27856 and CE No is HYS.
Low self-discharging could endure over charge &discharge.Small SLA battery designed to use for 5-7 years as they are used in float charging,SLA for UPS designed to use for 7-10 years,stationary SLA designed to use for 10-15 years, Main power use SLA batttery:can be rechargeable at least 350 cycles under the discharge at 70% capacity.