- Joined
- Jun 8, 2022
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- 5,661
A couple weeks ago I bought a 24F AGM from Walmart - Clarios build. I tested it in Walmart, and my little tester said it was in good shape. I brought it home and put it on my 1A Noco trickle charger in AGM mode. It took about 24 hours to go green even though my tester said it was pretty much charged when I bought it.
I have tested the battery a couple times since, and it seems like my truck's alternator is not fully charging it (2011 Nissan Frontier). It says it has lots of amps - but the voltage is a little low - like around 12.45, and it says its only 80% charged. I presume not a high enough voltage? I do have the smart charger disabled, so its running old school an the alternators voltage regulator - which worked fine for my old lead acid.
Is this normal or not normal for an AGM. My lead acid's - even when bad - would stay fully charged mostly.
I will do a parasitic test, but I did one not long ago when my 4 year old lead acid was getting week and there is literally nothing when everything goes to sleep. Maybe 10mA. So I doubt that's any problem.
So I am wondering if I might have been better off sticking to lead acid in my case - I never had this problem in the past. Never had an issue starting the truck though, and lots of guys on the Nissan forums run these without issue or so they say.
I have tested the battery a couple times since, and it seems like my truck's alternator is not fully charging it (2011 Nissan Frontier). It says it has lots of amps - but the voltage is a little low - like around 12.45, and it says its only 80% charged. I presume not a high enough voltage? I do have the smart charger disabled, so its running old school an the alternators voltage regulator - which worked fine for my old lead acid.
Is this normal or not normal for an AGM. My lead acid's - even when bad - would stay fully charged mostly.
I will do a parasitic test, but I did one not long ago when my 4 year old lead acid was getting week and there is literally nothing when everything goes to sleep. Maybe 10mA. So I doubt that's any problem.
So I am wondering if I might have been better off sticking to lead acid in my case - I never had this problem in the past. Never had an issue starting the truck though, and lots of guys on the Nissan forums run these without issue or so they say.