I agree with Max; the battery may be tired; certainly worth a load test. Youj forgot one important test and that is the voltage drop on startup. Check the attached video for an informative walk through on motrocycle battery testing.

 

Thanks dj

 

While a load test is always good, I really hadn't gone that far. The first thing is to make sure that the battery is fully charged first and we were discussing the charging system not the battery. I was thinking that the battery wasn't fully charged and it needs to be before looking at voltages. It would need to be so before a load test.

BTW in the video. the DMMs have a 1.5% difference in reading. I'd expect better.

BBTW, Thanks for the info on the other stuff.

 

Gotcha….

 

Looks like your charging system is working. I’d just buy a new ( quality) battery and be done with it. Keep it on the ( hopefully smart charger) you bought when not ridden. IMO best solution. If bike has security, be sure you know procedure ( pull main fuse w/key on) before changing out battery.

 

Thanks Rodent, the bike does have the security system. Bike is currently on the battery tender and reading is full charge. I do plan on replacing the battery. I have heard the Harley Batteries are actually great ones to use.

 

Today was the first time I went to Wal-Mart for an oil change. Afterwards they gave me a “Battery Test Results” report saying “Battery fails to meet industry accepted standards and should be replaced” The results are:



Voltage: 12.79V

Measured: 402 CCA

Rated: 550 CCA

Temperature: 92 degrees F



I have no idea what these numbers mean. Do I need to replace it now, can I wait, and if I can wait, about how long?

 

Till it wont start

 

If it's a truck battery, you might want to look for another battery. MC battery it would be a little different. 550cca sounds like a remarked Yuasa.

 

ave no idea what these numbers mean. Do I need to replace it now, can I wait, and if I can wait, about how long?