SCP12180 12V 18Ah (20hr)- NB (NB-1) or M5 TerminalsRechargeable AGM Lead Acid Battery. This battery is completely sealed and is maintenance-free, leak proof and can be used in any position. Approved for transportation by Air, DOT, IATA and the FAA.General Features:Absorbent Glass Mat (AGM)technology for efficient gas recombination of up to 99%Not restricted for air transportation, complies with IATA/ICAO special provision 67UL-recognized componentComputer designed lead calcium tin alloy grid for high power densityLong service life, float or cyclic applicationsMaintenance-FreeLow self-dischargeDimensions and Weight: Length (mm / inches) 181 / 7.13Width (mm / inches) 77 / 3.03Height (mm / inches) 167 / 6.59Total Height (mm / inches) 167 / 6.59Approx. Weight (kg / lbs) 5.30 / 11.68 Performance Characteristics: Nominal voltage 12 VoltNumber of cells 6Nominal Capacity 77° F (25°C): 20 hour rate 18.0AhrSelf-Discharge: 3% of capacity per month at 20°COperating Temperature Range Discharge: -20 to +60°COperating Temperature Range Discharge: Charge -10 to +60°COperating Temperature Range Discharge: Storage -20 to +60°CMax Discharge CurrentShort Circuit CurrentCharge Methods: Constant Voltage Charge 77°F (25°C)Cycle use 2.40-2.45VPCMaximum charging current 0.33C 20hrTemperature compensation -30mV/°CStandby use 2.26-2.30VPCTemperature compensation -20mV/°C