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Trying to find a tv Calibration dvd for best picture? »
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SparkChaser
BURY BECK
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join:2000-06-06
Downingtown, PA
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1 edit

Re: Home UPS powered by car battery: failed

said by CajunWon See Profile :

Wondering why it only provides ~20 minutes of backup power?

Power died at the house today, so I plug my laptop into this UPS. ~20 minutes later I'm running off the Laptop battery alone. Then the APC 550/UPS which powers my router/modem/ATA begins the 1-sec interval beeping. I get that battery and connect a 400W inverter which powers: Laptop; Router; Cable Modem; VOIP ATA. It's still working great, hours later and I'm still working, calling, surfing. And the battery is still reading at least 12volts, cheap analog volt-meter.
I'm a bit confused as to what is happening. Would you restate the problem?
--
"Facts do not cease to exist because they are ignored." - Aldous Huxley
permalink · 2007-09-21 15:59:25 · Print · Reply to this

CajunWon

join:2005-12-30
Cary, NC
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1 edit

Re: Home UPS powered by car battery: failed

How can I get hours, instead of minutes, from a large 'car type' battery attached to an APC UPS?

Especially considering the same battery then (without recharging) continues to power more equipment for many hours through a standalone 400W inverter.

My goal is to get extended protection from my APC UPS 'on the cheap'.
permalink · 2007-09-21 17:43:41 · Reply to this
Forums » Tech and Talk » Technical » ElectronicsTrying to find a tv Calibration dvd for best picture? »
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