This is how my plane wound up in a bush at the end of a field. The lable on the ignition wire says 6v-8.4v and the manual says "2x Li-Io / Li-po or 6x Ni-Cd Ni-MH " Now im no expert but i dont see where any thing here is 6V and i had a 6v Ni-MH 1200 Ma and it continually failed on the first ignition I had durring the setup procedure. I could not hook a choke to the ign. as described in the manual without the ign. signaling a failure. I cycled the battery it was fine. The ignition was replaced I had similar problems after 1 short flight the battery tested at 6.5 - 6.7 volts under .5 amp load and the ignition continued to show a battery failure. I have purchased a Li-Io 2400mah relion pack from fromeco {great people to deal with} and now i can fly this thing but ill need some new landing gear wheel pants and some ultracote to repair the scars from this experiance of reading a black and white lable saying 6v-8.4v attached to the plug wire that is firmly attached to the ign. Tor said a 5 cell pack is not to be ussed use a 6 cell pack show me a 6v 6 cell pack? show me a ussable ign with a 6v pack you can say a fully charged pack is 6.7v but under load? is it safe? would you risk it? I hate to sound like im upset But there is a huge lable that says 6V -8.4V on this ign that is just not the case and is very very dangerouse to me my fellow club member's and yes im very upset my Ultimate is parked I dont want to fly it I no longer trust it some one have a huge cub to put this motor in? the motor and the ignition may be just fine in fact I think after 1 gal that ive burnt with iti may actually decide i like it againsome day. This plane is 19lbs all day long and after all ive been through with this 6v theory Trust is something thats just going to take time and posably a new air frame cuz this one has seen some action I dont care to remember.
20 20 hind sight allways read the fine print on the back page of the manual