Christian

I have had several of these units, and have not had any problems with any. I see you are using 2s Lipo. This is too high voltage and you may have damaged it. The specified voltage is 3.5 to 6.5 v.

http://www.greathobbies.com/manuals/...001_manual.pdf

This is the jl version o the manual. It is the same as my Rcbee one. I cannot seem to be able to open rcbee web site at the moment.

John