What charger should I use?
I have a class C MH with one coach battery under the hood opposite the chassis battery. Guess what? One is not enough to boondock with. I have a welder currently building me a tray to hold three deep ...
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The Ultra is a WFCO converter which has "issues" You would do much better with PowerMax unit or one of the others like a PD.
Amps size charger for the three 24s depends on how long you want to run the gen and also how big the gen is to run that many amps of a charger. You could go to a 75amper on that size of bank.
Going from a 55 amper to a 75 amper will save only about 12 minutes doing a 50-90SOC recharge but the 55 amper needs a 15a/120v circuit while the 75 or bigger needs a 20a circuit(except the PowerMax 75 on up which have PF correction so still can run on a 15a.)
I would look closely at the PowerMax 75 amper lower portion replacement for the magnetek. Another choice Randy has is to take out the whole power centre and replace with that PowerMax that has a 60 amper in it. Lots of rewiring that way for the fuse panel though.
PD units have their own fan base. :) However if you have one of those MSW Onans, you might find the PD does not put out its full amps. Be ok if you are using clean power like from a Honda inverter gen.
Amps size charger for the three 24s depends on how long you want to run the gen and also how big the gen is to run that many amps of a charger. You could go to a 75amper on that size of bank.
Going from a 55 amper to a 75 amper will save only about 12 minutes doing a 50-90SOC recharge but the 55 amper needs a 15a/120v circuit while the 75 or bigger needs a 20a circuit(except the PowerMax 75 on up which have PF correction so still can run on a 15a.)
I would look closely at the PowerMax 75 amper lower portion replacement for the magnetek. Another choice Randy has is to take out the whole power centre and replace with that PowerMax that has a 60 amper in it. Lots of rewiring that way for the fuse panel though.
PD units have their own fan base. :) However if you have one of those MSW Onans, you might find the PD does not put out its full amps. Be ok if you are using clean power like from a Honda inverter gen.
