Hi Bob,
I put on an old Todd charger with Voltage regulation, but not absorb
and float. I can change the voltage up or down as needed. Changing
out the remote is a good idea. I do have another Magnum inverter at
another location, but was trying to avoid another couple trips....
Thanks,
Jason
On Sep 27, 2009, at 9:57 AM, robert ellison wrote:
I have had real bad luck with Interstate Batteries. That aside here
are some further ideas.
What type of an external charger are you using? if it is a shop type
charger, they don't behave the same as the 3 stage charger in a good
inverter and you can't compare them directly.
The best test would be to put another inverter charger on it to see
how it behaves. Another Magnum would be ideal. Do you have another
available?
Try a different remote also, just in case there is a problem there.
That would allow you to mix and mattch the invertes and remotes to
sort things out.
Bob
On Sun, Sep 27, 2009 at 11:44 AM, Jason Lerner
<wapa...@rockisland.com> wrote:
Hello Bob,
Yes I have deep cycled the batteries. I only mentioned the 12.7
because above that voltage it will skip the absorb charge.
Interstate batteries, and all the connections are good and tight,
specific gravity all good as well.
I was thinking maybe it is an intermittent internal connection, but
I put an external charger on the same battery bank and it charges
just like it should....
Thanks for the hints,
Jason
On Sep 26, 2009, at 8:11 PM, robert ellison wrote:
Have you deep cycled the batteries? Normally you would be way below
12.7 when you had to use a generator to charge,12.7 is fully
charged for a 12 volt pack.
.
Cycle them down to 10.5 to 11 volts or so a few times and charge
them back up.
See if it charges better when cycled.
What brand of batteries are these?
The magnum chargers are great, and if shorted it goes to 14.4 volts
the charger is fine.
Any chance you have bad connection somewhere? If you have one try
using a infared pyrometer to look for a warm connection somewhere.
But it has to be after you charge for a while, give it time to heat
up.
Bob
On Sat, Sep 26, 2009 at 12:04 PM, Jason Lerner <wapa...@rockisland.com
> wrote:
Hello All,
Have a question on a Magnum 1212MM-AE. The battery charger will
not get above 13.8 Volts. The system worked fine for the first
three weeks with Voltage rising to 14.4 volts for the absorb
cycle, but now it will not. The battery size and type setting are
correct, and using the "custom" charging profile set to 15 Volts
does not work.
We have tried unplugging the BTS, while also making sure the
battery Voltage is below 12.7 when starting the generator. The
remote control is attached and there is 35 amps going into the
battery with a 2KW honda. It will sit at 13.8 Volts and do an
absorb cycle for 2 hours and then go into float. There are 4 golf
cart batteries in the system and all cells check out good, no dead
cells, and connection are all bright and tight. Turning the main
DC disconnect off while the gen is running shows 14.8 Volts at the
battery terminals of the inverter, but the batteries will not rise
above 13.8. Magnum says the battery charger is fine since it goes
up to 14.8 when the batteries are disconnected, but that doesn't
make for a very efficient charger if it is not connected to the
batteries......
I am not familiar with these chargers, did I miss something, any
ideas?
Thanks,
Jason Lerner
Waldron Power and Light Co.
(888) 927-2526
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