I use this battery in my .12 hydro. It will last 3 heats no problem. I have used it for over 4 years without any issues. It's only 200 mah not 250 though.
If you get a battery checker you can run the small batteries and quickly check how much life they have left before your next run. I like the ones that show the percentage of battery life remaining instead of just individual cell voltage. It helps me avoid over discharging the battery.
Cool!!! Thanks for all the great info guys!!! I have been using the Reedys with the switch, but thought they had gone away....I just ordered a couple more.