Hey folks, Question: I have a DX7 radio with a AR 7000 Rec. Servos are DS821 digital. It all came together in a pack.. The battery that was with it is a Spektrum 4.8 1100mAhr NiCd 4 cell Rx Pack. Now the question. Can I use my other batteries with these servos / system without any damage .. Here they are. JR Sport 1500 mAh 4.8 Nickel Metal Hydride 4 cell, and hpi racing 1200 mah nickel metal hydride 5 cell. If I can use these, which one would be the best to use. Thanks for your time. Pappywolf[sm=50_50.gif]