UB645WL Universal Power Group Sealed Lead Acid Battery 6V 4.5Ah, w/ Wire Lead
	Quantity in Basket: none Code: UB645WL Price:$9.75 Shipping Weight: 2.02 pounds Length: 2.75" Width: 1.86" Height: 3.94"
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General Specifications Dimensions: Length 2.76 inches 70 millimeters Width 1.86 inches 47 millimeters Height 4.02 inches 102 millimeters Height over Terminals 4.25 inches 108 millimeters Approximate Weight 2.02 pounds 0.90 kilograms Terminals: "WL" Leads terminating with free hanging AMP. INC. MATE-N-LOK connector. Socket housing 1-480318-0 mates with pin housing 1-480319-0. Case: ABS Plastic Electrical Specifications Nominal Voltage: 6 Volts (3 cell in series) Nominal Capacity: 20 hour rate (225mA to 5.25 volts) 4.5 AH 10 hour rate (400mA to 5.25 volts) 4.0 AH 5 hour rate (700mA to 5.10 volts) 3.5 AH 1 hour rate (2700mA to 4.50 volts) 2.7 AH Energy Density (20 hour rate) 1.29 Watt-hours/cubic inch 78.8 Watt-hours/l Specific Energy (20 hour rate) 13.8 Watt-hours/pound 30.0 Watt-hours/kg Internal Resistance (Fully Charged Battery) 20 milliohms (approx.) Charging Cycle Applications: Limit initial current to 900mA. Charge until battery voltage (under charge) reaches 7.20 to 7.35 volts at 68º F (20º C). Hold at 7.20 to 7.35 volts until current drops to approximately 45mA. 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 6.75 to 6.90 volts continuously. When held at this voltage, the battery will seek its own current level and maintain itself in a fully charged condition.