Li-ion battery mod for MJX R/C FERRARI F40 - ENGLISH ONLY
Channel: AReResearch
Date: 2014-05-07

Got this used MJX Ferrary F40 RC toy for the kids. The old Ni-MH pack wouldn't hold charge and couldn't supply high enough current. So I tried an AA battery holder and a cheap UltraFire 14500 Li-ion battery. - Works great!