Apologies for resurrecting this thread but the Gill G-25 on my airaft has died after two years, due in the main part from not having been used due to weather and maintenance issues. It would appear I am not alone as several dealers are out of stock so I've taken the plunge and bought a Concorde RG25X. The thing is the dealer said It could go straight on to the aircraft from the box. The bumpf with the battery suggests several checks to be completed before use. Advice please.