Guest Battery Chargers

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Mike and Joanne Stimmler

Is anyone familiar with the Guest 2620a Charge Pro? It is a 2 bank 20 amp charger and This is the charger that was on my boat when I bought it . I am in the process of replacing my batteries and it seems that this charger has been doing a pretty good job so far but I am considering the Xantrex,

Any thoughts?
Mike
Mike and Joanne Stimmler
Former owner of Calerpitter
'89 Tall Rig Fin keel #940
San Diego/Mission Bay
mjstimmler@cox.net

Stu Jackson

#1
Mike, doesn't look too bad, but has limitations for long term battery life. 

See: http://www.marinco.biz/files/Guest%202009.A%20catalog.pdf  See page 4.  I got here by Googling the name & model #. 

Looks like a good 3 stage charger to me, except that there appears to be no equalization settings.  Also, Guest's discussion and wiring diagrams using isolators scares me, since isolators take 0.7 V to 1.0 V OUT of the system and are way old technology.
Stu Jackson, C34 IA Secretary, #224 1986, "Aquavite"  Cowichan Bay, BC  Maple Bay Marina  SR/FK, M25, Rocna 10 (22#) (NZ model)

"There is no problem so great that it can't be solved."