Avatar of mebaby333
mebaby333
Flag for United States of America asked on

Battery UPS APC SC1500

I have an APC battery backup, rack mounted. This model, SC1500, has a series of 4 batteries and the batteries were screaming to be replaced. I had my boss order the batteries and we got them but they were 4 unlinked batteries. This is a pain. I attempted to connect them the same way they were connected and got a spark. After that I got a bit nervous and I can not find a diagram for these batteries and how to connect them.
Does anyone have any idea?
HardwareDisaster Recovery

Avatar of undefined
Last Comment
mebaby333

8/22/2022 - Mon
Gerwin Jansen

If the batteries are the same, I see no issue. But the instructions to replace the batteries will have some note about switch the UPS off before replacing. Can you check that? A small spark would be expected because the new batteries will be empty and will get charged once connection is made. How big a spark is it? Check polarity and measure voltage on new batteries if possible.
Davis McCarn

I recently had to replace the batteries on a much larger APC and, after inspecting the battery packs, opted for buying the assembled batteries rather than trying to pry the old ones apart to move the wires!
If you are scared (which I can understand!), unplug all of the computers and use a trouble light for testing.
mebaby333

ASKER
I figured it out. First my boss wired it and I was relieved but it was tested at 24v and the back of the unit states 12v so I gave it a go and it measured 12v.... I installed them and nothing blew up ;) but the building wiring fault is on and a constant alarm.....
Experts Exchange has (a) saved my job multiple times, (b) saved me hours, days, and even weeks of work, and often (c) makes me look like a superhero! This place is MAGIC!
Walt Forbes
mebaby333

ASKER
Also the spark was initial spark was between just the batteries not the unit :)
Davis McCarn

You need to download the users manual so you'll know how to check the status and what the errors mean.
http://www.apc.com/resource/include/techspec_index.cfm?base_sku=sc1500i&ISOCountryCode=us&tab=documentation
mebaby333

ASKER
I have read the manual a million times.... okay maybe 2 times and then some scanning.... no info on the error :) They are pretty secretive with their stuff I tell ya
⚡ FREE TRIAL OFFER
Try out a week of full access for free.
Find out why thousands trust the EE community with their toughest problems.
SOLUTION
Davis McCarn

THIS SOLUTION ONLY AVAILABLE TO MEMBERS.
View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
GET A PERSONALIZED SOLUTION
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.
ASKER CERTIFIED SOLUTION
David Johnson, CD

THIS SOLUTION ONLY AVAILABLE TO MEMBERS.
View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
⚡ FREE TRIAL OFFER
Try out a week of full access for free.
Find out why thousands trust the EE community with their toughest problems.
mebaby333

ASKER
I thought it was 12v but I think I just caught a glimpse of the 120v marking and translated it in my brain to 12v. I think we will be switching it to the 24v (which is Davids suggested connection I believe) configuration and trying again. Thank you guys for your help.