wow not sure what the problem your having with receiver packs I just ran the halloween classic with the same 250mah thunderpower 7.4 lipo pack I bought last year for vegas. first time it's been charged since snowbirds in january and didn't have a lick of trouble out if it. just charged it at 2.5amps and plugged it back in to my receiver. now for club races I use the novak booster. just never like to hassle with the recharging of the pack for club races. just plug it into the receiver and it will power the BD that way.