Description of 12v2.3ah battery Application Maintenance free storage battery 12V2.3ah is used for fire alarm system, automatic door, automatic packing lock and so on. Advantage 1. The battery is full of power when its out of factory, no need to use liquid charge; 2. no memory, no need to discharge battery use, suitable for circuit design; 3. by high partition, adsorption and strong; 4. there is no flowing liquid (poor liquid), does not leak acid and free Upside down, 5. comply with environmental requirements, ease of use, 6. the use of lead-calcium alloys, battery self-discharge is very low, 7. easy storage, less maintenance; 8. using ABS plastic shell and valve technology for safe use. battery characteristic Nominal voltage 12V Nominal capacity(20h rate) 2.3Ah Size Total height 62mm length 178mm width 34mm height 62mm Weight 0.89kg Rated capacity 25°C(77°F) 20 hour rate(0.115A) 2.30Ah 10 hour rate(0.21A) 2.10Ah 5 hour rate(0.39A) 1.95Ah 1 hour rate(1.38A) 1.38Ah Internal resistance in full charge status 25°C(77°F) 50mΩ Capacity at different temperature(10h) 40°C(104°F) 102% 25°C(77°F) 100% 0°C(32°F) 85% -15°C(5°F) 65% Self discharge 25°C(77°F) capacity after 3 months 91% capacity after 6 months 82% capacity after 12 months 64% Mode of charge (constant voltage) 25°C(77°F) cycle-use initial charging current less than0.92A , voltage14.10-14.40V float-use Initial charging current less than 0.35A voltage13.50-13.80V Notice 1 Dont near the hot source and dont under the sunshine. 2 Dont charge in the sealed container. 3 No short circuit. It should be addition charge if you dont use, and single charge per three months, to avoid irreversible sulfating. The battery should be changed when the battery jar broken or the electrolyte omitted, to avoid acid corrosion. 4 Dont store in the space of acid gas. 5 You should be careful and regular check when use the battery. To avoid the battery dont work. You should change the battery if the capacity is not full or has been damage, especially after one year using. 6 Dont put the battery in the fire, or it will explode. 7 Please use cotton cloth to clean, if the battery is broken down and leak electrolyte. Please wash your skin when touch the electrolyte. 8 Dont clean the battery by using the organic solution. (e.g. petrol)