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Adding More Batteries | 14 comments (14 topical, 0 editorial)

Re: Adding More Batteries (3.00 / 0) (#12)
by scottsAI (user name at eml dot cc) on Thu Aug 21st, 2008 at 12:23:47 AM MST
(User Info)

Farhan,
Your problem is unique as will be the solution.

The 600w UPS can charge fast. (Seems to).
Problem:

w: Inefficient after charging and while running in backup.
w: efficient, takes too long to charge.

OK,
Use a heavy duty switch to connect to the 600w for charging, once charged switch battery to the 400w APC where the loads are. Turn off the 600w.

My APC 1000w supports changing the batteries while in operation, have tested to verify.

Not the greatest solution, may work for your situation.

Have fun,
Scott.

[ Parent ]

Re: Adding More Batteries (3.00 / 0) (#13)
by farhan on Thu Aug 21st, 2008 at 10:52:53 PM MST
(User Info)

Thank you for your information.

Problems in Pakistan are always unique : ), coming back to serious point.

The solution you told me can be done but i can't just keep switching things from here to there all day 3 times. I am not home most of the time and my family can't do that.

Yes the 600w locally made UPS charges very fast, even if electricity goes 3 times for 2 hours it seems to give same backup everytime. My APC 1000w is not supporting the big wet battery, starts beeping when connected to it. Should i put thick wires in the PCB for battery? maybe the thin wires are not supporting the 145AH battery?

[ Parent ]

Re: Adding More Batteries (3.00 / 0) (#14)
by scottsAI (user name at eml dot cc) on Fri Aug 22nd, 2008 at 04:11:03 PM MST
(User Info)

Farhan,
I wired two UPS to one battery, been working fine.
New wires are several times longer, used much heaver wire.
New wires equal the resistance of the original wires connecting the battery.
Also kept both wires next to each other (+,-) minimizing inductance.

You might be able to do something like that with relays.

AGS is a battery manufacture, they specialize in SLA type used in UPS.
Should work if connected correctly to APC UPS.
I connected a flooded Lead Acid battery and it worked.

If not then more information will be necessary to figure out why.
Battery voltage when connected,
How doe the newer ones work with it ect.
Many more.

Have fun,
Scott.

[ Parent ]

Adding More Batteries | 14 comments (14 topical, 0 editorial)

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