Hurricane Michael 2018

[DangerRuss]

Typically Deep cycle batteries do not like being charged over 10 amps, life expectancy and amps hours will diminish rapidly.
I good 3 stage charger is what's needed and time... You can get to 70% charge in about 8 hours. But will need a lower amp and longer charge time after that to get full saturation and 100% charge. That will help to reduce sulfation and extend battery life.

I charge my batteries at 2A unless there is some kind of urgency to using it. I was thinking in the power outage/generator scenario, I'd be OK charging it faster, because it would be needed, and be OK if it sacrifices some battery life. Definitely something I'll do more research on - life expectancy if I have to charge them faster a few times during power outage. I think I have a charger at home that does 15A.
Also, I need to post up the kind of battery I am using. I got a deal on several of them over 10 years ago when a cell tower company was replacing tower batteries as part of preventative maintenance. They are still working great - I just keep them charged every so often while storing them. They are 12v AGM and I think l 110 amp-hours. I got them for $15 or $25 each, which was an awesome deal. I would like to find out if anyone can get a hook up to get more like that. I'd be willing to pay a little more. Dang it – I just searched for them online and can't find the exact one. I'll have to wait till I get home and look them up and post a link to what I'm talking about

 

[Mirac]

We haven’t changed UPS batteries lately, I grabbed a few
of them before . They are like 200 ah. And weigh 150 + pounds.
One of the UPS module strings has 100 batteries.
I’ll have to check the matrix on when the next change out is due.