Ultra Small Weight Only 13.5 Pounds Dry Cell Standard Size Top Posts Works On Most Vehicles Without Modification 12 Volt Systems Lighten up your hot rod or race car by removing the standard 40 lb battery and replacing it with the power packed 13.5 lb Dyna-Batt! The Dyna-Batt features the cranking power of the bulky stock batteries at a fraction of their size. This battery features consistent starting power and even though has no cold cranking amp rating has been tested to crank engines with compression ratios as high as 15:1. The reserve capacity of this dry cell is 16 Amp Hours. Use of a low amperage battery charger/maintainer is recommended. NOTE: SPECIFICATIONS: Weight = 13.5 lbs, Dimensions: Length = 7, Width = 3 & Height = 6 1/2 , Reserve Capacity = 16 Amp hours, Cold Cranking Amps = Not Rated