How to boost charge AGM batteries in storage?
The manual for my Lifeline 100 Amp Hour Deep Cycle AGM 12 volt batteries says this: "While in storage, batteries should be boost charged every 90 days or when open circuit voltage drops to 12.5 vol...
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https://www.boatandrvaccessories.com/products/powermax-pm3-60lk-12-volts-60-amp-power-converter-battery-charger-w-led-light
There are other "sizes" in amps of these. In storage of course you will need 120v to plug into. Not a gen, which would need to be run for many hours depending.
Here is what you want for a constant voltage. You can set the voltage for your AGM charging spec (14.4v for those AGMs ISTR). You leave it doing 14.4v until amps taper to that 0.5a/100AH spec.
If you need to do a "reconditioning" you can set this converter to 15.5 and do that too.
You need an ammeter to tell when your amps have tapered to the spec amount. I use my Trimetric monitor for that job.
Instructions for operating that converter here:
https://powermaxconverters.com/wp-content/uploads/2021/04/PM3-Owners-Manual.pdf
There are other "sizes" in amps of these. In storage of course you will need 120v to plug into. Not a gen, which would need to be run for many hours depending.
Here is what you want for a constant voltage. You can set the voltage for your AGM charging spec (14.4v for those AGMs ISTR). You leave it doing 14.4v until amps taper to that 0.5a/100AH spec.
If you need to do a "reconditioning" you can set this converter to 15.5 and do that too.
You need an ammeter to tell when your amps have tapered to the spec amount. I use my Trimetric monitor for that job.
Instructions for operating that converter here:
https://powermaxconverters.com/wp-content/uploads/2021/04/PM3-Owners-Manual.pdf
