You might consider the Alphagen DCX3000. I have two of them and when my 400ah bank is less than 52.5v and they sense a large draw they can both spool up the amps accordingly to support almost maximum hull speed and motor speed. They can each produce 60amps per generator. I simply run this back to the bank and invert it from there for traditional 120v ac house use or convert it to 12 volt for the boat electronics.
I charge with 2160w of solar and if I have shore power I use a couple old Lestronic II ferroresonant 48v chargers that automatically shut off after 53.3 volts so between the solar and the chargers I can push over 50amps back into the batteries on a bright sunshine day. I just have to reset the Lestronics and they continue to push the voltage of the pack up to full quickly enough as once the batteries crest 54.5v the voltage progress quite rapidly to 56.5v but that is moot as I hardly ever take them there for no good reason other than to calibrate my EV display to track amp hours before a trip.
Arden
From: "John Acord jcacord@gmail.com [electricboats]" <electricboats@yahoogroups.com>
To: electricboats@yahoogroups.com
Sent: Tuesday, July 12, 2016 9:55 PM
Subject: [Electric Boats] Generator and battery charger
I am interested in using a generator with the battery charger to have continuous running for longer range. If you have done this what generator and charger did you use? This is for a 48V system, and would be also interested in the output current.John Acord
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Posted by: Arden Wiebe <albert682@yahoo.com>
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