connex-electronics.com Power-Sonic
Power-Sonic Model PS-490 Sealed Lead-Acid Battery
 
PS490
 

Order Part Number: Add This Part to your Quote. PS-490

General Specifications
Dimensions:
Length 3.97 inches 101 millimeters
Width 1.73 inches 44 millimeters
Height 3.74 inches 95 millimeters
Height over Terminals 4.02 inches 102 millimeters
Approximate Weight 2.80 pounds 1.28 kilograms
Terminals: Quick Disconnect Tabs (0.250"x0.032")
Case: ABS Plastic
Electrical Specifications
Nominal Voltage: 4 Volts (2 cell in series)
Nominal Capacity:
20 hour rate (450mA to 3.50 volts) 9.0 AH
10 hour rate (830mA to 3.50 volts) 8.3 AH
5 hour rate (1530mA to 3.20 volts) 7.65 AH
1 hour rate (5400mA to 3.00 volts) 5.4 AH
Energy Density (20 hour rate) 1.40 Watt-hours/cubic inch 85.3 Watt-hours/l
Specific Energy (20 hour rate) 12.9 Watt-hours/pound 28.1 Watt-hours/kg
Internal Resistance (Fully Charged Battery) 10 milliohms (approx.)
 
Charging :

Cycle Applications: Limit initial current to 1800mA. Charge until battery voltage (under charge) reaches 4.80 to 5.00 volts at 68º F (20º C). Hold at 4.80 to 5.00 volts until current drops to approximately 90mA. 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 4.50 to 4.60 volts continuously. When held at this voltage, the battery will seek its own current level and maintain itself in a fully charged condition.