After all connection was finished, fit the battery at the battery box, replace it at place such as before you take the old battery out. Please make su...
Usually if we used a VHF FM Transceiver, the problem always at battery because the battery have life cycles, so, if the battery is dead, we need to replace with new one. But the problem is, the battery is expensive.
Open the battery from handset. You'll see Handset contact pads and Charge Pads at battery body. Be careful with this two contact pads, DO NOT SHORT IT !!!