This 5 Amp Hour high-capacity 12 volt battery will replace the battery in some of the Johnny Stewart 512 series, plus other brands. See below for other types of batteries used in the 512 series units.
5 1/2" Wide x 4" Tall x 1 5/16" (1.3") Deep
***NOTE: Please be sure to measure your old battery or the battery compartment inside your electronic call before ordering! Dimensions are in the description.