Sometimes I come across battery deals on archaic Chinese sites and must either alter the connection in the plane or the battery itself.all you have to remember is: NEVER CUT BOTH WIRES OFF THE BATTERY AT THE SAME TIME! It'll cause a short, could cause the battery to confligrate. Cut one wire at a time. Attach your new compatible connector, note positive and negative are on the correct side (there is no faster way to let the magic smoke out of the board in your plane than to get the polarity of your battery incorrect),& you are good to go!