Which would you install?
I am going to be running 2 new batteries on our Jayco 17Z hybrid this year. We have a big MSW inverter, I think it's over 2000w, but we won't be using all of that obviously. I tried a single group 2...
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BFL13 wrote:ib516 wrote:
I'll have to see if my 2010 Jayco Iota converter has that plug for the smart charger feature. I know right now the highest I see no matter the state of charge of the battery is 13.3 or 13.4v, so that might have been part of the problem -- low charging rate.
That is your problem! You must have a charger that can do 14.6ish volts or more to get anything done at all in your 90 minute window.
14.8v at 25C/77F, which is the spec for many battery types to be charged at, is 15.2v at 5C/35F in the cold. Most converters won't help with that, so 14.8 is better than 14.6 if no temperature compensation.
That is the beauty of an adjustable voltage charger. You can set it to the right voltage for the situation.
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And the higher the voltage, the faster your batteries will charge up.
As the OP only has 90 min generator time in the morn and evening ...
There do exist chargers with a temperature probe that automatically increase the voltage at lower temps. But they are pricey.
And one advantage of AGM batteries is that they can be placed inside where it's warm so you don't loose 30% of capacity when it's freezing outside. But they too are pricey.
