PowerSonic rechargeable sealed lead acid battery. 6V 3.5 AH with 0.187" quick disconnect terminals.Product Features:Absorbent Glass Mat (AGM) technology for superior performanceValve regulated, spill-proof construction allows safe operation in any positionPower/volume ratio yielding unrivaled energy density Rugged ABS plastic case and cover Dimensions: L=1.34" x W=5.28" x H=2.56"Approved for transport by air. D.O.T., I.A.T.A., F.A.A. and C.A.B. certifiedU.L. recognized under file number MH 20845Specifications: Nominal Voltage: 6 volts (3 cells in series) Nominal Capacity: 20 hour rate (175mA to 5.25 volts) .............3.50 A.H.10 hour rate (330mA to 5.25 volts) .............3.30 A.H.5 hour rate (590mA to 5.10 volts).............2.95 A.H.1 hour rate (2.17A to 4.50 volts) .............2.17 A.H. 15 min rate (6.86A to 4.50 volts) .............1.71 A.H. Approximate Weight: 1.37 pounds (0.62 kg) Energy Density (20 hour rate): 1.26 Watt-hours/cubic inch (76.8 Watt-hours/l) Specific Energy (20 hour rate) : 15.3 Watt-hours/pound (33.9 Watt-hours/kg) Internal Resistance (Fully Charged Battery): 20 milliohms (approximately) Maximum Discharge Current ( ≤ 7 Min.): 10.5 amperes Maximum Short-Duration Discharge Current ( ≤ 10 Sec.): 35 amperes Terminal configurations: F1: 0.187" quick disconnect terminals. Shelf Life - % of nominal capacity at 68° F (20° C): 1 Month: 97%3 Months: 91%6 Months: 83% Operating Temperature Range: Charge: -4°F (-20°C) to 122°F (50°C)Discharge: -4°F (-20°C) to 140°F (60°C) Case: ABS PlasticCharging Characteristics:Cycle Applications: Limit initial current to 1000mA. Charge until battery voltage (under charge) reaches 7.20 to 7.35 volts at 68°F (20°C). Hold at 7.20 to 7.35 volts until current drops to approximately 35mA. 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. NOTE: Due to the self-discharge characteristics of this type of battery, it is imperative that they be charged after 6-9 months of storage, otherwise permanent loss of capacity might occur as a result of sulfation.
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