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Discussion Starter · #1 ·
Was wondering if my 28 year old Hitachi 35 Amp Alternator
(LR 135-105) would be ok for my soon to be replaced
batteries...
background: Yanmar 3 GM motor with 1 bank of 2 Group 27 batteries (about 200 amp/hrs)...soon to be replaced with 2 group 31 batteries (210- 230 amp/hrs)
batteries have usually lasted 6-7 years ...always on a mooring, never any shorepower, so it's just the
alt. and a small solar panel.
Thinking the alt. has been a little on the light side
but I do not use much power and have never had a
power problem.
Question, is the technolgy of the old alt. (internally regulated and seems to be functionally ok...thinking charging at 14.plus volts) been bypassed by something
new, better regulating charging of the batteries?
Thanks in advance,
Hugo
 

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Discussion Starter · #6 ·
Thank you all for your (always) good input/insight.
Batteries are/will be lead acid.
Was thinking about the $700.-1000. needed to upgrade
the alt/reg, but not in the cards this year, that is why I
posed the question.
For now will put into service larger solar panel I already have
don't remember size, have to check, but have to buy another
controller..3 stage sounds good as thinking my current controller
not up for the job ( MPPT but think not 3 stage, more checking).
Thought I would try Mainesail's suggestion and buy
2 US Battery #31 DCXC..but was quoted a "wholesale price" thru
business from distributor for $179. each 130 a/hr...Guess I'll be checking into Sam's Club Duracell (East. Penn.) D/C batteries. 105 a/hr $95.
Thank you all again,
Hugo
 
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