Powersonic PS-121000U 12 Volt, 100 AH Rechargeable Lead Acid Battery Absorbent Glass Mat (AGM) technology for superior performance Valve regulated, spill proof construction allows safe operation in any position Power / volume ratio yielding unrivaled energy density Rugged impact resistant ABS case and cover (UL94-HB) Wide Operating Temperature Range: Power-Sonic batteries may be discharged over a temperature range of -40C to +60C (-40F to +140F) and charged at temperatures ranging from -20C to +50C (-4F to +122F)