Yep, pick up a 2300Mah NiMh from one of the Ebay sellers. You won't be disapointed. The only thing you have to watch is over charging them. And don't use a high amp charger, the wall wart that came with your TX is just what you need. Caculate the time need and set an alarm clock to check it then. Some of the NiMh chargers have a thermal sensor, and as long as you dont over heat one, you are good to go. I have one in both my Futaba 9Scap and my 10C. It's great because you can charge one up full and then forget about it for a couple weeks and when you get to the field, you still have about three times the capacity that your stock battery had new. Cost wise, they will be less than an exact replacement by maybe as much as 1/2 the cost.

Don