Join Date: Aug 2006
Location: Arlington, VA
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For a first class and medium priced charger I'd second the recommentation for the Sterling ProUltra series. They have a 5-year manufacturer's warranty.
The ProMariner Pronautic series are virtually identical chargers, produced by the same manufacturer and with the same features and look. I have one...the 40A version...and so far (2 weeks 24/7) it's been fine. But, ProMariner only provides a 1-year warranty.
Both are sold on eBay from U.S. dealers.
For an economical charger, look at the Iota series (a good dealer is Northern Arizona Wind and Sun). The DLS-75/IQ4 is the largest charger which will run on the EU2000i, and it provides a real 75A charge for as long as your batteries will take it. The Sterling/ProMariner chargers come in sizes up to 60 amps, and they are power-factor compensated and will work just fine with the EU2000i. They have several features the Iota's lack, but they cost more than twice as much.
I have an Iota DLS-55/IQ4 and an Iota DLS-45/IQ4 which have each been used to maintain a pair of T-105s for over five years, 24/7. I've installed a bunch of others on client's boats. They are very good chargers but, alas, have no real equalization capability (despite what Iota calls "equalization"). You can, however, set the absorption and float voltages a bit higher to keep the batteries a bit healthier (I use 13.8VDC float and 14.8VDC absorption on the T-105s @ 65F).
These no-nonsense chargers are perfect for several applications where you really don't need equalization (AGMs, gels) or where you're using them for a fast absorption charge like when cruising, say to get from 50% to 85% or so state-of-charge. They're great in fixed 24/7 applications as well, though it would be good to have another option for periodic equalization -- say, every 6 months or so. I use a second portable charger for this purpose (the West Marine 30A red one which occasionally comes on sale for $79....a real bargain!).
Last edited by btrayfors; 03-03-2012 at 05:35 PM.