The Autobot speed loader i use for airsoft takes a rather small battery, I've made this adapter for just that reason. This fits my Nuprol 1500mAh LIPO battery perfectly. Its exact dimensions are 46mm Wide x 66mm Tall x 16mm Deep This protects your battery from being dumped at the side and also has cutouts for the wires to sit nicely inside the EMG body itself making sure they're protected too, A deans connector fits perfectly through these cutouts and will slide into the original port