Universal 6V4.5AH lead-acid battery is a lead-acid battery, the product has the following characteristics: seal structure, safe and easy to use; long service life, float use, small sealed lead-acid battery design life expectancy is 5 - 7 years; UPS sealed lead-acid battery design expected life of 7-10 years; fixed type sealed lead-acid battery design life expectancy is 10-15 years. Full range of battery 150mAh to 3000Ah Capacity of the range of available quantities. And customers can request the design and manufacture of special specifications battery. The products have obtained UL, ITS, CE products safety certificate and ISO9001 certification and national ministerial network authentication. Widely used: small UPS power supply, emergency lights, emergency lighting equipment, solar systems. Universal lead-acid battery has eight production lines, annual production capacity of 500,000 KVAH guaranteed on-time delivery. For of this section 6V4.5AH lead-acid battery specific technical parameters are as follows: Standard voltage: 6V standard capacity: 4.5AH/20HR (C20) Rated Capacity: 20 hour rate (0.225A): 4.5AH 10 hour rate (0.41A): 4.14AH 5 hour rate (0.77A): 3.83AH 1 hour rate (2.7A): 2.7Ah Case Material: ABS internal resistance: 30mΩ (approx) self-discharge (20 ° C): <0.8% per week float life (20 ° C): 3-5 years Suitable temperature range -20 ° C - 45 ° C Battery size (L * W * H): 70 * 47 * 106mm per box Number of batteries: 20pcs monomer battery Weight: 0.74kg charging method (25 ° C ) charging voltage: 7.3V-7.5V Maximum charging current: 1.35A Charging time: 12 hours (60% DOD), 24h (100% DOD)