Details & Specs for M40 Gel Sealed Pair Battery

12 Volts, 40 AMP hours Deep Cycle: Premium sealed batteries capable of up to 1000 cycles (50% DOD) as fully tested by independent laboratories. Gelled/Suspended Electrolyte: No liquid of any kind. Battery is completely sealed, Safe in any position (except upside down). Maintenance Free: Water is never added, low liability Travel Ship Easily: MK batteries are F.A.A, IATA, and UPS approved. Others may not be. Safety: Sealed batteries have a special re-sealing vent system that prevents excessive internal pressure,  they cannot explode under normal conditions .