My wireless PTT handset's battery did/does not last long enough.

Make sure that when the wireless PTT handset is docked in the wireless cradle, it settles in nicely and a double beep should be heard as confirmation that it has made contact with the cradle to charge.

Also, make sure that PTT continuous charging is enabled in the dock to disable the dock going into sleep mode. The dock should be connected to a windows PC with Eagle (software management tool) to enable this feature.