Thanks Dennis. I know very little about electronics and have been flying R/C for a long time and never knew that an overnight charger was not a trickle charger. Learn something new every day.

What I don't understand is why manufacturers don't build an auto-shutoff into their chargers. OK, I know they don't to save money, but seriously, how much more would it cost to build in peak detection?

What really kills me is that Futaba sets up their transmitters so a peak charger can't be used and some transmitters don't even allow you to remove the batteries. A guy brought over his 6-channel heli radio and I couldn't charge his batteries with any of the chargers I use.

On my transmitters I bypassed the diode, but I'm not cutting into a customer's transmitter. Fortunately, I managed to dig out an old futaba charger from their G-series which did the trick.