Greetings all, (In advance please forgive any poor spelling or grammar.)
I have this group filling my email with a lot of interesting information. And frequently I see folks trying to find solutions to charging their 48 volt banks. I too will be having a 48 volt bank to replenish soon. In my last 2 years of searching, I have found that there are almost no vendors willing to support this voltage in the generator aspects I have been looking for. Although it seems to be one of the more popular voltage for not only marine, but also land based EVs too, I have found very little. I have spoken with reps from WAI-Tempo, Prestolite, Delco, and several others that wish to remain annonimous. I am told there is a desire in the automotive world, to move to this voltage, and incorporate the charging system within the flywheel. But I doubt that will happen in any reasonable number of years. This all being said, I have found that if you are willing to assemble the individual components, you may be able to save a buck or two in the process. The first key component is the alternator. Currently the following part numbers are all attached to a 48 volt DC, 90 amp, large framed unit that can work very well in our application providing you are willing to spend the $869-$2800 to buy one;
Leece-Neville #- A0014417AA (or discontinued suffix of JB), John Deere #- TCA51161, Balmar#- 97 EHD 9048. I found eBay to be the place to buy the alternator at the lower prices.
In talking to a rep at WAI and also some local rebuilders, it seems to be possible to get a 24 VDC externally regulated unit, and put a 48 volt regulator on it, and you have something that will work. Rumor has it, that WAI may be considering gearing up to support this voltage, ... but we'll see.
One last note, as posted by another, the Alhpa-Gen 3000/48 is an option, as well as the Alten 48V/100.
Hope this helps. Experiment at your own risk.
Posted by: dhennis@centurytel.net
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