I just "inhereted'? an FT-60r from a SK estate. just the radio. Picked up a generic desk charger, charged it up, and tried to hit a local repeater. Radio started fine , but went off, then restarted as soon as i tried to transmit. I think I know the answer to this before I ask. Is it the Battery? It charged awful fast. How to I check the battery? By the way, it exhibits the same behavior when plugging the wall wart into the radio itself. Any help or suggestions will be appreciated. Greatly.

KJ4UAU