HarleyTechTalk

Technical Forums => General => Topic started by: Oclaf on September 26, 2022, 06:58:33 PM

Title: Battery status
Post by: Oclaf on September 26, 2022, 06:58:33 PM
Took another ride Saturday, couple hundred, bike ran fine. It's been on tender since and it won't go into maintenance mode, just keeps "charging". Checked it this morning but still in charge mode. I disconnected it, turned on power, bike lights up like normal. Didn't start as I ain't riding anywhere and don't like doing that. I am thinking maybe the battery is going south? Any thoughts?
Title: Re: Battery status
Post by: Hossamania on September 26, 2022, 07:17:52 PM
What is the voltage reading of the battery?
Title: Re: Battery status
Post by: Jim Bronson on September 26, 2022, 09:04:30 PM
Connect a DVM and carefully watch the display while you start it. Try to catch the lowest reading. That will indirectly tell you how much current your battery can supply during starting. IIRC it should read no lower than 11 V.
Title: Re: Battery status
Post by: Hossamania on September 27, 2022, 04:57:40 AM
And running voltage will tell you if the charging system is working properly.
I noticed that my bike took way too long to reach full charge on the Tender after a ride, checked and found the stator had crapped out, battery was fine.
Title: Re: Battery status
Post by: Oclaf on September 27, 2022, 08:21:35 AM
Quote from: Hossamania on September 27, 2022, 04:57:40 AMAnd running voltage will tell you if the charging system is working properly.
I noticed that my bike took way too long to reach full charge on the Tender after a ride, checked and found the stator had crapped out, battery was fine.
Great, hopefully it's just the battery, 2020 RGS, Arizona, i do ride it, 28.5k and clicking...could be the tender. In the middle of moving and need a day or two to get out there and snoop. It's still stupid hot and humid here. No sooner i load out and roll will the temperature drop, hopefully get out there later, as i am riding it so on return, do some quick troubleshooting, unless i get stuck. LOL  :unsure:
Title: Re: Battery status
Post by: hrdtail78 on September 27, 2022, 11:05:02 AM
A .9 amp tender don't do much on these new bikes.  They seem to maintain but not charge a low battery.  Alarms, radio memory, other electronics.......  I recommend at least a 3.5 amp with maintenance option.  I like the NoCo brand.
Title: Re: Battery status
Post by: fbn ent on September 27, 2022, 11:43:05 AM
Quote from: hrdtail78 on September 27, 2022, 11:05:02 AMA .9 volt tender don't do much on these new bikes.  They seem to maintain but not charge a low battery.  Alarms, radio memory, other electronics.......  I recommend at least a 3.5 amp with maintenance option.  I like the NoCo brand.

Makes sense. I use both depending on the circumstances.
Title: Re: Battery status
Post by: hrdtail78 on September 28, 2022, 05:54:58 AM
Obviously, it's amps and not volts.  I mistyped but since it was quoted. 
Title: Re: Battery status
Post by: fbn ent on September 28, 2022, 06:39:02 AM
Read right by it. Brain saw amps.  :emoGroan: