100A x 14.4V = 1440 watts. Simply amazing it hasn't boiled them over or
melted the plastic cases or melted the internal structures causing an
explosive short in the process.

All this going on in a "battery box" that seals in all this heat even
worse.....

How long does it charge at 100A? minutes? hours? I've never seen a good
battery that, if you jacked 100A into it, wouldn't rise up to 14V in no
time at all, which should make the charger stop hitting them so hard.

You simply CANNOT charge a lead-acid battery in an hour. That's as crazy
as those idiots at the service station "quick charging" someone's car
battery while-they-wait....

Larry

I'll ignore the crack about getting out more, having just come in from the
Gulf Stream last Sunday.


"Jeff Morris" wrote in
:

"Larry W4CSC" wrote in message
...

Unless you're all using submarine 6250AH cells, I doubt you'll ever
see 100A coming out of a 100A charger, especially these new
computerized-charge models.

Nonsense. I have 425 Amp-hours (4 6-Volt golf cart batteries). My
Heart 2000 always puts out 100 Amps even if the batteries are only
moderately discahrged.

If the battery is THAT dead, there's no sense charging it.

Wow, I've been running 5 years now on dead batteries! Amazing!

Run
the batteries down to what you normally do, then watch the charging
current curve on that 100A charger.

100 Amps, bang on.

1200 watts will simply boil the electrolyte in
a lead acid battery that cannot dissapate that much heat (the
batteries in these boats).

When I charge with the alternator thats at about 80 Amps. I do have
to check the water every month, but in 5 years it hasn't "boiled off."

Sounds great in the sales brochure and if you turn every
light in the boat on you might get it up to 50A, but that isn't
reality.

You have to get out more, Larry.



If you boys want to see a hard charger, there's an original equipment
Amel 40A manual charger in my stepvan service truck out of my buddy's
Amel Sharki ketch. IT will boil any battery you have in a couple of
hours, right out the top caps on every cell. That thing is
DANGEROUS.

Glad to be back on r.b.c, by the way. Had a great time in Florida
cruising and in the Gulfstreamer Race from Daytona to Charleston out
in the gulf stream. We had the Amel Sharki heavy old cruising ketch
up over 12 knots with the help of the Gulf Stream....(c;

I did 14 knots once ... in the Cape Cod Canal.