UPS Replacement Battery Source

nijave

New Member
May 10, 2016
15
4
3
Columbus, OH
Where do you guys get replacement UPS batteries from? I have an older APC SmartUPS that takes a couple 12v/12ah batteries. I've gotten them from BatteriesPlus, eBay, and Amazon, but I can never seem to find a brand that lasts more than 2 years. I've heard Yuasa batteries are supposed to be fairly good, but have no idea where to get them. I could get genuine OEM replacement batteries but they're about $150 vs $50-60.
 

BlueLineSwinger

Active Member
Mar 11, 2013
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I got some replacements for a couple basic APC desktop/workstation units from www.replaceupsbattery.com about 2.5 years ago. Pricing was good, and they have performed fine through a couple outages. Too soon to really judge longevity though, I'd think.
 

herby

Active Member
Aug 18, 2013
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have you tried Power Sonic? They have a pretty solid reputation.

I remember getting excited once because I saw seismologists using them (Power Sonic has a distinctive blue and gray color scheme) in a documentary about the 2010 earthquake in Haiti.
 

Blinky 42

Active Member
Aug 6, 2015
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PA, USA
I have also ordered form replaceupsbattery.com several times, the first order was 2 years ago and the batteries are still going strong.
I have always ended up with SigmasTek batteries from them.
 

Terry Kennedy

Well-Known Member
Jun 25, 2015
1,125
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New York City
www.glaver.org
Where do you guys get replacement UPS batteries from? I have an older APC SmartUPS that takes a couple 12v/12ah batteries. I've gotten them from BatteriesPlus, eBay, and Amazon, but I can never seem to find a brand that lasts more than 2 years. I've heard Yuasa batteries are supposed to be fairly good, but have no idea where to get them. I could get genuine OEM replacement batteries but they're about $150 vs $50-60.
Unless you're buying enough batteries to matter, just use batterysharks and look for a free shipping coupon on places like retailmenot.

APC UPSs drift out of calibration over time, almost always to the high side, so they end up cooking the batteries. Do a search for "APC float voltage adjustment".

APC seems to be using various battery manufacturers, some better than others. The only reason to go with genuine APC is to get the various wiring harness doodads so you don't have to re-use your old ones.
 

nijave

New Member
May 10, 2016
15
4
3
Columbus, OH
Unless you're buying enough batteries to matter, just use batterysharks and look for a free shipping coupon on places like retailmenot.

APC UPSs drift out of calibration over time, almost always to the high side, so they end up cooking the batteries. Do a search for "APC float voltage adjustment".

APC seems to be using various battery manufacturers, some better than others. The only reason to go with genuine APC is to get the various wiring harness doodads so you don't have to re-use your old ones.
Yeah, I've knocked the voltage down a little bit. The last couple sets of batteries were slightly swollen. I haven't had a look at this one yet since it's not at my house, but I may bump it down a bit more.
 

Drewy

Active Member
Apr 23, 2016
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Replaced mine a few years back with 2 large 12v leisure batteries. Was a little unsure whether the APC UPS would have the guts to charge them but they work and charge just fine. Mine took 4 x 6v batteries and the 2 large 12v batteries cost the same as replacing those. As a bonus I now have a run time of about 5 hours instead of the normal 20 mins or so. They've also lasted longer. It don't look pretty but I'm very happy with it.
 
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paf

New Member
Sep 21, 2020
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Portugal
About "Leisure batteries" or other types of batteries, you may try your local auto parts distributor, instead of a "specialised shop".
They may have batteries, or may get you batteries that fit the purpose, at a good price, as they sell lots and lots of batteries.

A "specialised shop" assumes that you have spent lots of money on your boat/RV/trailer so you can spend a lot on a battery... ;) ;) ;)
 

Terry Kennedy

Well-Known Member
Jun 25, 2015
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Never had a problem with APC batteries shipped and sold by Amazon
If you don't mind the prices being higher (sometimes by a lot) that is a good option, particularly if you don't want to deal with re-using your existing battery wiring harness.

However, just using an APC battery does not guarantee that your UPS will "live long and prosper". As I've mentioned before, the charging system in APC units tends to drift out of calibration, leading to over-charging and reduced lifetime of replacement batteries.

APC discovered this themselves - they used to offer a "ChargeUPS" plan which was a replacement battery and a new 1-year warranty. They were getting a lot of UPS units back because they had chewed through the replacement batteries in under a year. That program was discontinued because they were getting so many claims.
 
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elvisimprsntr

Member
May 9, 2021
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Florida
As I've mentioned before, the charging system in APC units tends to drift out of calibration, leading to over-charging and reduced lifetime of replacement batteries.
Interesting. Is there a particular series the problem is attributed to?

I've been using the same APC UPS for 15+ years. I get 5 years, to the month, before the UPS warns me the battery needs to be replaced.

I guess your mileage may vary.
 

Terry Kennedy

Well-Known Member
Jun 25, 2015
1,125
575
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New York City
www.glaver.org
Interesting. Is there a particular series the problem is attributed to?

I've been using the same APC UPS for 15+ years. I get 5 years, to the month, before the UPS warns me the battery needs to be replaced.

I guess your mileage may vary.
APC units have been "cost optimized" over many years. In my experience, they aren't particularly concerned about what happens once the warranty is up. That is probably understandable for things like the inexpensive Back-UPS units, but I find it inexcusable on product lines like the Symmetra.

I agree with you that the older models can be very reliable. I have a Matrix 5000 from 1997 still going strong (with lots of battery replacements over the years). It would be an even older unit except that it had been exchanged twice early on, once to get the version that had an internal accessory slot and again to get one that had the "Smart Slot" accessory slot style.

IMHO, the "sweet spot" for Smart-UPS units is mid-to-late 2000's with units in black cases. The older ones were hard to calibrate, and the newer ones have been too "cost optimized".