GENUINE EXPERTPOWER BATTERY - The Most Trusted And Highest Reviewed Sealed Lead Acid Batteries On BATTERY TYPE - 12 Volt 4. 5 Amp 20 Hour Sealed Lead Acid Battery RUGGED CONSTRUCTION - The High Impact Resistant Battery Case Is Made Up Of A Non-Conductive ABS Plastic. This Material Has a Strong Resistance To Shock, Vibration, Chemicals and Heat AGM TECH - The Acid Inside Is Absorbed Between The Plates And Thereby Immobilized By A Very Fine Fiberglass Mat. This Along With The Valve Regulated, Spill-Proof Construction Of Our Batteries Allows Trouble-Free, Safe Operation In Any Position USER FRIENDLY - Easy, One-Time Installation Of Our Maintenance Free and Valve Regulated Batteries Will Get Your System Or Application Running In No Time At All