THanks

Yes, that little charger tender plus is a pretty practical little device.

I been reading a lot and bubbling (to a degree) is common and expected.

Thanks for all the good advice.








"jeff" wrote in message
...
Tuuk wrote:
Hi

I bought the two Nautaulis deep cycle big batteries for 139. ea. Also the
motomaster 10/2 amp automatic charger regurlarily 70.

I have had the 2amp charger on one of the batteries for about 6 hours or
8
hours and little bubbling going on I can hear and the charger still is
not
changing from red light (charging) to green light (charged).

Should I keep it on the 2am for longer? Batteries are only 1 week old
from
Canadian Tire and charger is also new.


random thoughts:

Its hard to say about the bubbling because a small amount of bubbling is
expected, but a large amount means possible overcharging. As others say,
get a simple Voltmeter and a cheap specific gravity tester - you can get
both for under $10. And of course make sure the battery has the proper
amount of distilled water.

Your batteries hold a bit over 100 Amp-hours, meaning that if the were
totally dead it would take over 50 hours for your 2 Amp charger to get one
close to full. The last 10% could take some hours more. However, they
should have be delivered with at least a 50% charge - otherwise you'd have
a case to return them as DOA, since taking them below 50% diminishes the
lifetime. Look for a manufacturing code to make sure it hasn't sat on the
dealer's shelf for 6 months or more.

That said, I would expect the batteries to need a significant initial
charge (unless the dealer claimed they were fully charged) so the 2 Amp
mode really will take overnight or more to get it up to full. Or you
could use the 10 Amp mode to do it faster. BTW, I regularly charge at a
rate double that (scaled for my larger bank) but my charger is well
controlled so it doesn't apply too high a Voltage. In fact, the purpose
of a deep cycle battery is to be able to take them down to about 50%, and
then recharge them reasonably quickly, and repeat this about 500 times.
If you really want to charge at a slow rate, this is the device to get:
http://www.amazon.com/Battery-Tender...dp/B00068XCQU/