I installed 2 li-ion batteries in series and use a servo extension wire only need the +/- then set radios low voltage buzzer in the menu of radio to 7.4 volts there is a rx socket in front upper battery tray area ..made radio alot lighter than with all the AA cells
I was not given A clear answer to that question . They came out with a v2 of that radio and reciever .then my sponsorship ended but I had my 100 rx and 4 radios so I was kool with it...So many people talk bad about this and other brands from South Korea but I've always loved the products I have...