Re: [M100] backup battery question
On Tue, Jul 25, 2017 at 7:18 AM, Jim Toth wrote: > Can an M100's backup battery read 4 volts and still be too bad to work > right? I've seen car batteries act that way. you have to measure it during standby. With the power off and the standby power on, measure the battery voltage (and double che
[M100] backup battery question
Can an M100's backup battery read 4 volts and still be too bad to work right? I've seen car batteries act that way.