Replacing a 55 amp converter with a 45?
MY new trailer came with a WFCO 55 amp converter. My old trailer has a Progressive Dynamics 45 amp converter with a charge wizard. I want put the PD unit in my new trailer and the WFCO in my old. Shou...
Forum Discussion
Thanks, Niner, but I (we) are trying to determine whether or not using a higher charge rate, i.e; using BFL's mega AMP approach, is resulting in increased sulfation/stratification. SMK has expressed his concern that such a fast replacement of Ah's does not allow for sufficient cleaning of the plates.
I, for one, think this is a very reasonable concern on smk's part, and believe it is deserving of further investigation. That said, I have yet to see any evidence to support such a notion. But then again, I read an interesting article this morning that mentions the 'Amp Hour Law' which suggests limiting Charge Current to the amount of Amp Hours needing to be replaced.
So, for example, a 200Ah bank, at 50% dod, should be charged at no more than a 100a charge current. And as Ah's are replaced, the charge current should decrease accordingly. So, by the time the bank is at 20% dod, the current should have tapered down to 40a max.
Of course, this cannot be accomplished using any power supply / smart charger that operates in a constant current mode from 50-80% soc. It would require a single stage dumb charger, with a particular max amp output, set to the appropriate voltage, to best approximate such a charge profile.
I, for one, think this is a very reasonable concern on smk's part, and believe it is deserving of further investigation. That said, I have yet to see any evidence to support such a notion. But then again, I read an interesting article this morning that mentions the 'Amp Hour Law' which suggests limiting Charge Current to the amount of Amp Hours needing to be replaced.
So, for example, a 200Ah bank, at 50% dod, should be charged at no more than a 100a charge current. And as Ah's are replaced, the charge current should decrease accordingly. So, by the time the bank is at 20% dod, the current should have tapered down to 40a max.
Of course, this cannot be accomplished using any power supply / smart charger that operates in a constant current mode from 50-80% soc. It would require a single stage dumb charger, with a particular max amp output, set to the appropriate voltage, to best approximate such a charge profile.
