NPD38-12 (12V38Ah/10hr) The rechargeable batteries are lead-lead dioxide systems. The dilute sulfuric acid electrolyte is absorbed by separators and thus immobilized. Should the battery be accidentally overcharged producing bydrogen and oxygen, Special one-way valves allow the gases to escape thus avoiding excessive pressure build-up. Otherwise, the battery is completely sealed and is, therefore, maintenance-free, leak proof and usable in any position.Battery ConstructionComponentPositive plateNegative plateContainerCoverSafety ValveTerminalSeparatorElectrolyteRaw materialLead DioxideLeadABSABSRubberCopperFiberglassSulfuric AcidGeneral Feature●Absorbent Glass Mat(AGM) technology for efficient gas recombination of up to 99% and freedom from electrolyte maintenance or water adding.●Not restricted for air transport-complies with IATA/ICAO Special Provision A67.●UL-recognized component.●Can be mounted in any orientation. Computer designed lead, calcium tin alloy grid for high power density.●Long service life, float or cyclic applications.●Maintenance-free operation.●Low self discharge.SPECIFICATIONNominal voltage----------------------12VNumber of cell ----------------------- 6Length(mm/inch)----------------------- 197/7.76Width(mm/inch) --------------------------- 165/6.5Height(mm/inch)--------------------------- 170/6.69Total Height(mm/inch) ------------------- 170/6.69Approx. Weight(kg/lbs) ------------------ 11.2/27.5Performance CharacteristicsCapacity77°F(25℃)20 hour rate (2.1A, 10.8V )40Ah10 hour rate (4A, 10.5V)38Ah5 hour rate (6.8A, 10.5V)34Ah1 hour rate (25A, 9.6V)25AhInternal ResistanceFull charged Battery 77°F(25℃): 10mΩCapacity affected byTemperature(20hour rate)104℉ (40℃)102%77 ℉ (25℃)100%32 ℉ (10℃)85%5 ℉ (-15℃)65%Self-discharge68℉ (20℃)Capacity after 3 months storage90%Capacity after 6 months storage80%Capacity after 12 months storage60%Max. discharge current77℉(25℃): 400A(5S)Charge(ConstantVoltage)Float: 13.6~13.8V / 77℉(25℃)Cycle: 14.4~14.7V / 77℉(25℃)Max. Current：10ADischarge Constant Current (Amperes at 77℉ 25℃)End Point Vlots/Cell5min10min15min30min1h3h5h10h20h1.60V1.30392.072.042.025.010.27.004.142.181.65V12387.469.340.724.210.15.904.092.171.70V11882.766.539.123.310.06.854.052.151.75V10978.163.237.222.19.655.804.002.131.80V10371.058.034.920.89.715.703.952.10Discharge Constant Power (Watts at 77℉ 25℃)End Point Vlots/Cell5min10min15min30min45min1h2h3h5h1.60V23215511369.454.244.528.519.313.71.65V21814510765.051.742.627.618.813.51.70V20813710162.349.140.725.718.313.21.75V18912894.558.746.538.725.617.712.91.80V17511988.155.143.836.624.517.112.5(Note)The above characteristics data are average values obtained within three charge/discharge cycles not the minimum values.
