My battery issue

Topic: My battery issue (Read 547 times) previous topic - next topic

My battery issue

June 11, 2019, 12:10:58 am

Thought I would continue this over here as it has gone away from technical.

I have had my portable AGM 2, 10, 20 amp charger on the house batteries all day now. First at 20 Amps for 4 hours, Then at 10 Amps. Just returned from a bicycle ride and the battery bank reads 12.75 V and 90% charged via the analyzer on the charger. The charger is charging at 13.1 V @ 10 Amps

I decided to order replacements as I will wonder about these batteries after being so discharged and how they might or might not cycle very well.

Re: My battery issue

Reply #1 – June 11, 2019, 10:17:25 am

13.1 VDC is too low for BULK MODE, and that is what you should be in. Certainly 14 VDC. Low 13's is fine for FLOAT MODE (once batteries are fully charged, but will not fully charge the batteries.

Re: My battery issue

Reply #2 – June 11, 2019, 12:26:44 pm

OK, I went out and started the genset. It went to charge for about 30 seconds then went to accept at 14.3 V @ 15 Amps.

Re: My battery issue

Reply #3 – June 11, 2019, 12:29:15 pm

Sounds like you are approaching full charge-- only 15 amps @ 14.3 indicates that. 30 seconds is VERY fast to move out of bulk mode.

Re: My battery issue

Reply #4 – June 11, 2019, 12:36:07 pm

I just fear that the batteries are weakened. So now I have the dilemma of, do I put new ones in or go camping next week with the old ones to see what happens.

Re: My battery issue

Reply #5 – June 11, 2019, 12:43:18 pm

Now that they are fully charged, take them to a place that will load test them (individually). That will give you the FACTS to make a good decision.

Re: My battery issue

Reply #6 – June 11, 2019, 01:00:15 pm

Doh!! And I just talked about that a couple days ago. I swear my mind is going downhill fast.

Re: My battery issue

Reply #7 – June 11, 2019, 01:16:48 pm

A desulfurization electronic little device, maybe one per battery should/may slowly bring them back.

Re: My battery issue

Reply #8 – June 11, 2019, 03:54:40 pm

Took the coach in to have the house batteries tested. All were at 12.8 V and all of them pulled more than their rated 1450 CCA. Lowest one was 1480 CCA, Highest was 1550 CCA. All tested good.

Perhaps I dodged a bullet on this one. But still likely removed one or two of their nine lives.

Re: My battery issue

Reply #9 – June 11, 2019, 05:05:54 pm

Definitely a desulfurizer would be attached to my agm's

Amazon.com: Pulsetech PowerPulse Battery Maintenance System: Sports & Outdoors

Re: My battery issue

Reply #10 – June 11, 2019, 08:26:37 pm

And the Inverter/charger finally went into float mode @ 13.3V.

Geez, What a couple of days.

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My battery issue

June 11, 2019, 12:10:58 am

Re: My battery issue

Reply #1 – June 11, 2019, 10:17:25 am

Re: My battery issue

Reply #2 – June 11, 2019, 12:26:44 pm

Re: My battery issue

Reply #3 – June 11, 2019, 12:29:15 pm

Re: My battery issue

Reply #4 – June 11, 2019, 12:36:07 pm

Re: My battery issue

Reply #5 – June 11, 2019, 12:43:18 pm

Re: My battery issue

Reply #6 – June 11, 2019, 01:00:15 pm

Re: My battery issue

Reply #7 – June 11, 2019, 01:16:48 pm

Re: My battery issue

Reply #8 – June 11, 2019, 03:54:40 pm

Re: My battery issue

Reply #9 – June 11, 2019, 05:05:54 pm

Re: My battery issue

Reply #10 – June 11, 2019, 08:26:37 pm

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