SU2200NET - drops ALL power when 110V-AC removed

[Anonymous user]

Hello,

I bought a used SU-2200NET for a heck of a price.
I plugged it in, and let the batteries come up to full charge.
... however, I'm not sure the batteries are worth a good charge, but the LEDs show "full".

WHEN PLUGGED INTO 110V AC;
I'm able to get the UPS to test, and go into battery only mode.
And it seems to run okay, and starts to drain the batteries with a good sized load.

Then, I simulate a power outage by pulling the power cord from 110V AC... and the entire unit shuts down.
... no lights, no battery, nothing. And thus, it shuts down all 110V items plugged into it.

Could this be a sign that the batteries are truly dead and need replacing?

I cannot; Put the unit in test mode (force it to battery - via "cold start") with it unplugged from 110V AC.

Please help!! I need UPS on the items it supports asap!

Thanks in advance,
Johnny

I reviewed this documentation for info; http://www.apcmedia.com/salestools/ASTE-6Z8L9X_R0_EN.pdf

Message was edited by: johnnyairtime

[BillP]

Good day Johnny,I recommend that you de-energize the UPS by turning it off, unplugging it from the outlet then press and hold down the "0" or the Off button for 5 seconds to de-energize it, it's like a hard reset for the UPS. Then plug it back in, turn it back on and let it complete its test to see if the battery still passes after the reset. Can also tell me specifics of what devices are you testing this UPS with?
Also, check the battery physically first for signs or wear and tear to give you an idea of how old it is. Look for a white sticker with bar codes on the battery, if there is, obtain the part number (usually starts with RBC) and the serial number. Take down the part number and serial number of the UPS from the white sticker at the back of the unit so we can help you find out how old the unit is.

[Anonymous user]

I was able to do as you suggested.

Power down, Unplug from wall, held "off" button, it blinked LEDs and clicked.

I plugged it back in, and powered it back up.
And yes, it told me the batteries needed replacing (even though they showed a near full charge on the LEDs)

For the heck of it, I unplugged the unit and it killed power to the outlets on the back of the unit, however the UPS did not completely power down itself this time. I had battery LEDs and battery replacement LED lit.

... are the batteries hot-swappable in this unit? If so, I can check the serial info. If not, I have to wait for a chance to power down the unit for longer durations to get anymore information. The original owner said he's had it for a long time. I'd assume the batteries are older then 2-3yrs. He didn't offer much more about it.

[BillP · Accepted solution]

yes, the batteries are hot swappable but if AC power is lost during the battery replacement procedure, the UPS and load will turn off (as you'd probably suspect anyway).