The battery is 1/2 the size of the normal GPX stock battery. This battery is 7.4v and 18.6Wh. The battery will last approx. 3 hours and is 46% lighter than the standard li-ion stock battery.
Will work on all GPX series, GPX 4000, GPX 4500, GPX 4800 & GPX 5000 metal detectors.