12V 4.2Ah

 

 

General Specifications
Dimensions:
Length 3.54 inches 90 millimeters
Width 2.76 inches 70 millimeters
Height 4.02 inches 102 millimeters
Height over Terminals 4.21 inches 107 millimeters
Approximate Weight 3.81 pounds 1.73 kilograms
Electrical Specifications
Nominal Voltage: 12 Volts 
Nominal Capacity:
20 hour rate (250mA to 10.50 volts) 4.2 AH
10 hour rate (470mA to 10.50 volts) 4.0 AH
5 hour rate (900mA to 10.20 volts) 3.6 AH
1 hour rate (3800mA to 9.00 volts) 2.6 AH
Energy Density (20 hour rate) 1.53 Watt-hours/cubic inch 90 Watt-hours/l
Specific Energy (20 hour rate) 14.5 Watt-hours/pound 30 Watt-hours/kg
Internal Resistance (Fully Charged Battery) 17.3 milliohms (approx.)

 

Charging

Cycle Applications: Limit initial current to 1000mA. Charge until battery voltage (under charge) reaches 14.40 to 14.70 volts at 68oF (20oC). Hold at 14.40 to 14.70 volts until current drops to approximately 42mA. Battery is fully charged under these conditions, and charger should either be disconnected or switched to "float" voltage.

"Float" or "Stand-by Service": Hold battery across constant voltage source of 13.50 to 13.80 volts continuously. When held at this voltage, the battery will seek its own current level and maintain itself in a fully charged condition.


 

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Design by Sam Technology Co., Ltd.