I have an old Blade CX 2 that I lost the charger and need a new battery for. The CX 2 originally came with an Eflite charger called a "2 cell 7.4V Li-Po Balance Charger" with an input of 11.5-15v DC, and Output 0.5A. The original battery was a 7.4V 900 mAmp 2 cell Li po battery pack. I'm thinking I may be able to use the charger from my RC airplane but not sure how. The battery had

I have an RC airplane charger which is meant to charge a Horizon Champ S+, the charger is a "2S 7.4V DC Li-Po charger" with a charge rate of 300mAp, input 12 v DC. It has a blue label and is called a Celectra.

Both of these chargers are on the Horizon website. The plug on the helicopter battery had 3 prongs and was white in color and is slightly larger than the airplane battery which also had 3 prong but is smaller. Can I use an adapter between the charger I have and a new helicopter battery to charge both? What is the name of the adapter that I am looking for? Can someone tell me the type of adapters I have for the helicopter and for the plane?