When you are charging the UV-5R radio do not leave the radio on. If you do leave the radio on the cradle charger
cannot detect when the battery is fully charged if the radio is in the transmit mode. If you overcharge the battery you will shorten the battery’s life considerably.
Solution – Have two batteries and charge one at a time itself in the charger while using the radio in your hand as needed.
A side benefit to this solution is a faster battery charge.