I have ran the Losi 4.8 battery that they use for the Mico-t and Micro DS for a rx pack last year. It worked for awhile till I the batteries started to not take a charge or the wiring on the battery got bad. I have tried a booster that most the guys I know ran and it worked ever since then. I hav a spare just in case it goes out, but so far so good, it has not gone bad yet.