I don't have a spectrum radio but one of my flying buddies does. He lost a plane (TT Staudecker (SP?)) due to the receiver battery dying the plane went right through the roof of a trailer. I lent him a 3000 mah battery and when he went to plug in the battery he plugged it in the wrong slot and actually plugged it into 3 negative pins that shorted out the battery and fused 2 of the pins into the battery connector. to me its a bad setup for the battery connector.