I've been using them in a Futaba 3PM transmitter for a few months now. I wish I could put them in everything I own. They only come in the consumer button top type of cell and I don't like soldering those cells. Some do it, I don't.

But for anything with a battery holder, they are killer. They hold their charge on the shelf like a lipo, but are like NiMHs in every other way. I charge them using my Sirius/Peak Electronics chargers.

Great cells!!