I have purchased six of these batteries & they are working in JR9303, JR9503, & DX7 transmitters. I have been using Hyperion LiFe batteries for three years, but the GForce batteries are a third of the costs and work just as good. I have two so I will always have a charged backup. Also, I charge them out of the transmitter. All but one of the batteries came with a JR & Futaba connector. I replaced the one with two Futaba connectors with a JR.
When the voltage reads 9.8 volts, I recharge or replace it with a charged battery.