I've used six of these on different TX's, some JR, one Futaba, one Hitec, one Polk.

All have worked great, and it is wonderful needing to charge the battery once every two weeks and then in an hour using a computer controlled LiPo charger.

See: [link=http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=7346&Product_Name=Rh ino_2620mAh_3S_11.1v_Transmitter_Lipoly_Pack]Click me![/link]