I have a 2010 Fat Bob. My bike has been in the garage since winter has set in. I always have my Battery Tender connected. I noticed yesterday the red light on the Battery Tender on. I know it previously has been green since I plugged it in. I have not started the bike since November. Is my battery on its way out?? It is the original.

 

Heres a link to the battery tender instuctions....http://batterytender.com/includes/la...ns_BT_Plus.pdf

Good idea to test the battery voltage.

 

Awesome website! Thank you Sir.
I'll check it out.

 

The tender was probably just cycling through a "charge" phase - you're OK.

 

Not only do the tenders charge the battery but they cycle it also. If it constantly charged the battery, the life of the battery would be diminished.