Could use some guidance choosing AGM’s.

[Big_Katuna]

2005 Freightliner Fleetwood, Xantech Freedom 458 inverter/charger connected to four 6V golf cart batteries, which need replacing.

I would like to replace these with either two 6V or two 12V maintenance free AGMs.

We rarely boondocks, have a gas option fridge and if we need to use the microwave, will start the genset.

What we DO do is leave the RV plugged in all the time with AC on low, which fries the GC batteries. I have the watering system installed but still manage to forget and they get dry.

Are there direct replacement size wise for GC batteries?

[MEXICOWANDERER]

AGM batteries don't like a lot of amperage
when charging. they can't handle the heat.
Just get some deep cycle batteries.


Where in the world did you get that idea?

AGM is famous for safely accepting tremendous charging current safely. Except for tele communications special purpose batteries.

My single regular group 31 Lifeline chomps 101 amperes without even getting warm. CHARGING is done in a controlled manner. Not "Punch It And Hang On".

My two-story Lifeline does the same except it gulps 134 amperes.

Both operate at Lifeline's C1 spec.

[Big_Katuna]

time2roll wrote:
What are the charging specs set at? I thought the 458 had some adjustments? You can kill your new AGM too unless you get this set right.

It does have an AGM setting, I will get the book out and dig some.

[Lwiddis]

Throwing new batteries at a possible charger/inverter problem coupled with a lack of battery maintenance doesn’t seem to me to be the right approach

[time2roll]

What are the charging specs set at? I thought the 458 had some adjustments? You can kill your new AGM too unless you get this set right.

[Home_Skillet]

AGM batteries don't like a lot of amperage
when charging. they can't handle the heat.
Just get some deep cycle batteries.

[BFL13]

Trojan makes an AGM version of their T-105.

http://www.trojanbattery.com/product/t105-agm/

[pianotuna]

Hi,

Sounds as if the converter is not exactly "state of the art".

Does the 458 inverter/charger require the batteries to be connected for it to be used?

AGM may not be a good choice as there is no way to replace lost electrolyte.