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John H.[_2_]

On Thu, 27 Dec 2007 15:29:25 GMT, wrote:

On Thu, 27 Dec 2007 06:35:13 -0500, John H.
wrote:

I'm keeping the battery from the new boat in the garage so I can put a
charger on it every so often during the winter. The battery is a Nautilus
Gold Marine Deep Cycle, NG-27.

Yesterday I attempted to charge the battery with an automatic charger set
at 2 amps, 12 volt, deep cycle setting. The little green light began
blinking as though all was going well.

About 24 hours later, I noticed the little red light had come on,
indicating I should check the battery. I disconnected everything.

I'm thinking that 2 amps is not enough to charge the battery, and that I
should try it at 10 amps. But, I don't want to damage a brand new, never
used battery!

Ideas anyone?

Is this a Schumacher smart charger? If so, a BLINKING green light
indicates the battery is sulfated and the charger is attempting to
correct the problem. If it goes to red after that, I would suggest
disconnecting the charger, checking electrolyte levels in all cells
and then trying to charge it again.

Actually, it's a Diehard made by Schumacher. The green light has always
blinked when hooked up to any battery, unless the battery was totally shot
and the red light never went off.

John H.[_2_]

On Thu, 27 Dec 2007 16:01:11 GMT, wrote:

On Thu, 27 Dec 2007 10:38:06 -0500, John H.
wrote:

On Thu, 27 Dec 2007 15:29:25 GMT, wrote:

On Thu, 27 Dec 2007 06:35:13 -0500, John H.
wrote:

I'm keeping the battery from the new boat in the garage so I can put a
charger on it every so often during the winter. The battery is a Nautilus
Gold Marine Deep Cycle, NG-27.

Yesterday I attempted to charge the battery with an automatic charger set
at 2 amps, 12 volt, deep cycle setting. The little green light began
blinking as though all was going well.

About 24 hours later, I noticed the little red light had come on,
indicating I should check the battery. I disconnected everything.

I'm thinking that 2 amps is not enough to charge the battery, and that I
should try it at 10 amps. But, I don't want to damage a brand new, never
used battery!

Ideas anyone?

Is this a Schumacher smart charger? If so, a BLINKING green light
indicates the battery is sulfated and the charger is attempting to
correct the problem. If it goes to red after that, I would suggest
disconnecting the charger, checking electrolyte levels in all cells
and then trying to charge it again.

Actually, it's a Diehard made by Schumacher. The green light has always
blinked when hooked up to any battery, unless the battery was totally shot
and the red light never went off.

I saw the link you posted. That's not a 3-stage "smart charger", which
works far better on deep cycle batteries. As people have pointed out
in the past in various threads, charging a deep cycle battery is not
just a simple matter of cramming a bunch of volts and amps into it.
It's a process with stages. The charger you have is really not going
to properly and fully charge a deep cycle battery, even though it has
a switch that says it can.

Gotcha. Thanks. Maybe I'll take a ride to Wal-Mart, but promise not to tell
Harry. I don't want any long winded speeches.

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