It is Winter and weather is cold outside. What does that have to do with
signal meters? It does. It impacts the battery performance of your unit/
If you notice that the battery is no longer holding enough charge, check the following:
1- Disconnect the battery from the unit.
2- Leave it disconnected for 30 mins.
3- Reconnect and charge again.
4- Make sure you don't leave your signal meter outside in the COLD when not in use. That will affect the performance of the battery.
5- Always store the meter at room temperature.