Forum Discussion

KendallP's avatar
KendallP
Explorer
Apr 08, 2021

Xantrex Freedom 458 - Equalizing at 16.3V

Hey gang,

I was surprised to find my advanced search for both the last year and the archives turned up no results, so...

This unit has an equalizing mode that runs at a proper, but hefty 16.3V. And it has the current to back it up. Which is pretty sweet. But...

My question is in regard to the electronics in a 2004 MH.

Can they comfortably withstand this?

Or is it enough to open all the breakers except the Xantrex?

Or should I pretend the mode doesn't exist, disconnect the negative and equalize with a portable only?

Or...?
  • BFL13's avatar
    BFL13
    Explorer II
    Apr 08, 2021
    The fridge limit is 15.4 and light bulbs burn out faster with higher voltage. Usual instructions for E is to isolate the batteries from the rest of the 12v system in the RV. You would need another source of 12v to run the rig if it is being used.
  • KendallP's avatar
    KendallP
    Explorer
    Apr 08, 2021
    BFL13 wrote:
    The fridge limit is 15.4 and light bulbs burn out faster with higher voltage. Usual instructions for E is to isolate the batteries from the rest of the 12v system in the RV. You would need another source of 12v to run the rig if it is being used.

    Well not only that, but... if I isolate the bank from the coach... how is the Xantrex going to provide it that equalizing power?
  • BFL13's avatar
    BFL13
    Explorer II
    Apr 08, 2021
    Maybe somebody over in the Class A forum would know. Must be a common situation.
  • KendallP's avatar
    KendallP
    Explorer
    Apr 08, 2021
    BFL13 wrote:
    Maybe somebody over in the Class A forum would know. Must be a common situation.

    Maybe... for the few who pay attention to such details.

    I'll repost it there. Thanks.
  • madjack60's avatar
    madjack60
    Explorer
    Apr 08, 2021
    I had a solar charge controller fail and it started dumping 17 volts to the batteries. The fridge threw error codes and I disconnected the charge controller on the spot and replaced it.
  • 2oldman's avatar
    2oldman
    Explorer II
    Apr 08, 2021
    A DC-DC buck converter might be a solution. Or batteries that don't require equalization. :)

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