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12 v battery rechargeable 12v4ah lead acid battery 12 v battery

Maintenance free storage battery 12v4ah is used for fire alarm system and building interphone
The battery is full of electric energy when it's out of factory; no need to use liquid ; no memory, no need to discharge battery use, suitable for circuit design; by high partition, adsorption ability, there is no flowing liquid (poor liquid), do not leak acid , The battery can easily inverted and comply with environmental requirements, easy to use; with lead calcium alloy, battery, low discharge, easy storage, less maintenance; using ABS plastic shell, and valve technology for safe use.
battery characteristic | ||||
Nominal voltage | 12V | |||
Nominal capacity(20h rate) | 4Ah | |||
Size | Total height | 105mm | ||
length | 90mm | |||
width | 70mm | |||
height | 105mm | |||
Weight | 1.2kg | |||
Rated capacity 25°C(77°F) | 20 hour rate(0.20A) | 4.0Ah | ||
10 hour rate(0.4A) | 3.2Ah | |||
5 hour rate(0.70A) | 3.0Ah | |||
1 hour rate(2.5A) | 2.7Ah | |||
Internal resistance | in full charge status 25°C(77°F) | 35mΩ | ||
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 than1.80A , voltage14.10-14.40V | ||
float-use | Initial charging current less than 0.68A voltage13.5-13.80V | |||
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12 v battery rechargeable 12v4ah lead acid battery 12 v battery

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12 v battery rechargeable 12v4ah lead acid battery 12 v battery

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