Hi,
I am using Futaba Tx with the battery came with it. This battery show about 11.4V when fully charged overnight however voltage drops rapidly once at field. I think I can get about 4 flight (10 min./each).

Are there battery available that gives me more time? Same issues with Rx battery.

I do have a Hobbico Field charger which I can use to charge these batteries. Does field charger charge batteries at faster rate then regular wall charger?

Thanks for your help.

Regards,
Sujit Chokshi