ORIGINAL: DaveFlynn
Why not put LiPos and brushless motors in the planes you have? LiPos have gotten safer and better in the last year or two and there are new ones coming soon.
I have converted all of my 40 size glo powered models to electric. These are flying on A123 packs as well. Some over two years old since conversion and the A123s have logged over 400 cycles and are still going strong.