Used To Prevent Voltage Drop From Affecting Electronics; For Use With 12 Volt Batteries; 20 Ampere Output; Back-Up Power Of 20 Ampere For 1 Minutes; 6.2 Inch Width x 7.4 Inch Depth x 5-1/2 Inch Height Overall Dimension; DC Power Conditioner; With 5 Ampere Hour Sealed Rechargeable Battery