Hi Dave,
Yes the charger is powered by 4xAA batteries.
I found that pretty handy because its small and portable, so I took it up on the hills with me. You can stay out all day!
Good advice about the Li-po's. Not the safest batteries or the most stable but ok as long as you follow the guidelines.
Let em cool right down before you charge them as well.
Our dog chewed one up the other day and the gel inside leaked out onto her tongue and burnt her slightly.
Fortunately she survived the ordeal but is scared shitless of the little Li-po's now.
Let me know when it arrives and how your getting on. Obviously not until your birthday.
BTW I had a crash in the Wildcat tonight. I clipped a very small tree whilst coming into land. It was due to being distracted by a silly woman training her collies on my landing strip.
Only light scratches and a little tear in the wing. All fixed up and glued. Shame the first scratches are always the worst.