I have a 20v battery that won't charge. I watched several youtube videos over the weekend to troubleshoot but there were always some differences between my battery and everyone elses.
My battery never goes completely dead. It has one bar on it. When I put it on the charger, it flashes (charges) for maybe 30 seconds, then the charger goes solid, as if the battery if fully charged. When I remove the battery, it briefly shows a full charge, then quickly goes to 2 bars, and then subsequently to one bar. All without use.
I checked the date code on the battery and it is past the warranty date, so I can't get it serviced/replaced. Any ideas on how to fix?