Larry wrote:

Stephen Trapani wrote in news:nJrPf.263
:


Can I just charge both banks at the same time as I did before or do
I have to charge the banks separately?



I assume starting battery is on 1 and house batteries are on 2, right?

Right.

Any time there is a charging source, you may leave the switch in BOTH to
charge them all in parallel. The little battery will charge with lots
less current than the T-105s and when the voltage comes up to 14+, the
currents will simply stop. The automatic charger will keep pulsing the
lot of them to keep them at full voltage, as will the alternator. It'll
work fine that way.

What I would do is connect the AC charger to the house bank, directly,
not the switch common.

So you mean to *not* hook the AC charger to bank 2 in the switch, but
directly to the house batteries?

Once charged, the starter battery doesn't need to
be connected all the time to the charger, just occasionally, but the
house batteries do because you keep switching on loads in the boat.
Having the AC charger hooked directly to the house batteries also means
no matter what you do with that switch, even OFF, the charger will NEVER
be connected to the loads without a battery to sink its output to 14V.
Chargers and alternators can blow electronics if there's no battery
attached to them..not good. So, when you want the AC charger to boost up
the starting battery, just flip to BOTH for a day or while the wild party
is going on to maintain its charge. Don't leave it in BOTH all the
while.

So when you switch the switch to BOTH, the AC charger charges through
the house batteries, back through the switch and into the starting
battery even though the charger is not connected to the switch? or did I
misunderstand?

Thanks!

--
Stephen

-------

For any proposition there is always some sufficiently narrow
interpretation of its terms, such that it turns out true, and
some sufficiently wide interpretation such that it turns out
false...concept stretching will refute *any* statement, and will
leave no true statement whatsoever.
-- Imre Lakatos