"Larry" wrote

I think they were talking about higher than normal charger output
voltages in 15+v range that some chargers may put out under certain
conditions.

The charger output into an open circuit is quite high. But, the battery,
itself, will not allow the charger to come anywhere near this voltage
level.

I would have thought that by passing a 10 Amp current through a battery, the
overall resistance of the battery would result in a voltage increase across
the terminals. I am sure that when I hook a low car battery up to my
el-cheapo Sears charger, I get an increase in the standing voltage - Is this
not normal?


To say the charger puts out 15+VDC across a battery only tells me the
battery is overcharged, where battery voltage rises rapidly about 1.260
specific gravity as its electrolyte is converted into hydrogen gas.


Not sure exactly what Waeco are worried about. I was going to connect the
refrig unit only to DC, but the rectifier was available so I decided to
follow the manufacturer's recommendations for once . It could be that they
were concerned about chargers that can go into equalization mode - Don't
they then put out over 15V?

In any event, I kind of like the idea of bypassing the batteries when using
the refrig at dock. The batteries can be brought up to full charge quicker
without the refrig drain.

GBM