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expired Posted by phoinix | Staff • Dec 8, 2022
expired Posted by phoinix | Staff • Dec 8, 2022

APC UPS Sealed Lead Acid Battery Replacement (RBC17)

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$31

$57

45% off
Amazon
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Deal Details
Amazon has APC UPS Sealed Lead Acid Battery Replacement (RBC17) on sale for $30.97. Shipping is free.

Thanks to Community Member phoinix for sharing this deal.

About this Item:
  • Each APC Replacement Battery Cartridges (RBC) is tested and certified for compatibility to restore the performance of your APC UPS to original specifications
  • When you buy a new genuine APC RBC, you can recycle your old UPS battery via the "RBC Recycling Program" on the APC website. This program includes free return shipping to a recycling center (use the packaging from your new battery to return the old)
  • RBC17 is compatible with many APC UPS models including BE650G1, BE750G, BR700G, BE850M2, BX850M, BE650G, BN600, BN700MC, BN900M, and select others
  • 2 year manufacturer warranty

Editor's Notes

Written by SaltyOne | Staff
  • About this Deal:
    • Rated ~4.6 out of 5 stars from over 8,400 reviews.
    • At the time of this posting, Our research indicates that this is $9.02 lower (22.6% savings) than the next best available prices starting from $39.99. -SaltyOne
  • About this Store:

Original Post

Written by phoinix | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has APC UPS Sealed Lead Acid Battery Replacement (RBC17) on sale for $30.97. Shipping is free.

Thanks to Community Member phoinix for sharing this deal.

About this Item:
  • Each APC Replacement Battery Cartridges (RBC) is tested and certified for compatibility to restore the performance of your APC UPS to original specifications
  • When you buy a new genuine APC RBC, you can recycle your old UPS battery via the "RBC Recycling Program" on the APC website. This program includes free return shipping to a recycling center (use the packaging from your new battery to return the old)
  • RBC17 is compatible with many APC UPS models including BE650G1, BE750G, BR700G, BE850M2, BX850M, BE650G, BN600, BN700MC, BN900M, and select others
  • 2 year manufacturer warranty

Editor's Notes

Written by SaltyOne | Staff
  • About this Deal:
    • Rated ~4.6 out of 5 stars from over 8,400 reviews.
    • At the time of this posting, Our research indicates that this is $9.02 lower (22.6% savings) than the next best available prices starting from $39.99. -SaltyOne
  • About this Store:

Original Post

Written by phoinix | Staff

Community Voting

Deal Score
+44
Good Deal
Visit Amazon

Price Intelligence

Model: UPS Battery, BE650R, BE750G, Mfr. No. BE650G, ['12V DC' '110V AC'], Detachable Cable

Deal History 

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Sort: Lowest to Highest | Last Updated 6/27/2025, 10:06 PM
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Amazon$59.99
Dell Home & Home Office$68.96
Office Depot and OfficeMax $71.99

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Top Comments

FatFaluz
2312 Posts
1830 Reputation
Good price for an APC branded, 9Ah battery. They usually go as low as $35-40, but you may not be able to catch a sale when your old battery dies and you need a new one NOW.

That battery has a lower 7.2Ah capacity and smaller F1 terminals so technically not RBC17-compatible despite saying so (one reviewer used pliers to compensate for the loose connection). Mighty Max does have a 9Ah battery with F2 terminals for $23.55, curiously shipped and SOLD by Amazon [amazon.com] which may or may not be a good thing: for SLA battery with a limited storage/shelf life, some may prefer the seller ship fresh stock directly from their own warehouse (as with your 7.2Ah listing).

OP's listing is good when your friend needs a battery, since you don't want to be blamed for getting an off-brand if it doesn't work. For myself, I usually buy at least 2, and I can get (2) 9Ah for around $40 shipped from battery specialists like BatterySharks.com. Those popular CyberPower 1350VA/1500VA UPS towers each take two 7Ah/8Ah/9Ah F2 batteries (model RB1270/RB1280/RB1290) if you reuse the old wiring harness.

Also, I ensure that the UPSes that I buy can take the larger 7-9Ah battery size (as smaller sized batteries aren't much cheaper). Those used to be commonly $40 and under back in the Staples coupon days but for the last few years the cheaper models come with physically smaller 5.5-6Ah batteries.
rcboosted
1291 Posts
132 Reputation
no you cannot. Li-Ion chemistry aren't close enough to SLA, you'll either be too low or too high voltage. Charging profile are also very different. LiFePo on the other hand, can.
DiMAn0684
3004 Posts
441 Reputation
I've been buying 'generic' ones off EBay, and they run for ~5 years, which is in line with the lifespan I got out of the OE batteries that came with my APC UPSes.

121 Comments

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Dec 8, 2022
735 Posts
Joined Jan 2009
Dec 8, 2022
beezer86
Dec 8, 2022
735 Posts
3
Dec 8, 2022
9,168 Posts
Joined Aug 2018
Dec 8, 2022
TodayOnly
Dec 8, 2022
9,168 Posts
new replacement batteries cost $21-22 on ebay for 12v 9Ah.
2
1
Dec 8, 2022
2,312 Posts
Joined Apr 2010
Dec 8, 2022
FatFaluz
Dec 8, 2022
2,312 Posts

Our community has rated this post as helpful. If you agree, why not thank FatFaluz

Good price for an APC branded, 9Ah battery. They usually go as low as $35-40, but you may not be able to catch a sale when your old battery dies and you need a new one NOW.
That battery has a lower 7.2Ah capacity and smaller F1 terminals so technically not RBC17-compatible despite saying so (one reviewer used pliers to compensate for the loose connection). Mighty Max does have a 9Ah battery with F2 terminals for $23.55, curiously shipped and SOLD by Amazon [amazon.com] which may or may not be a good thing: for SLA battery with a limited storage/shelf life, some may prefer the seller ship fresh stock directly from their own warehouse (as with your 7.2Ah listing).

OP's listing is good when your friend needs a battery, since you don't want to be blamed for getting an off-brand if it doesn't work. For myself, I usually buy at least 2, and I can get (2) 9Ah for around $40 shipped from battery specialists like BatterySharks.com. Those popular CyberPower 1350VA/1500VA UPS towers each take two 7Ah/8Ah/9Ah F2 batteries (model RB1270/RB1280/RB1290) if you reuse the old wiring harness.

Also, I ensure that the UPSes that I buy can take the larger 7-9Ah battery size (as smaller sized batteries aren't much cheaper). Those used to be commonly $40 and under back in the Staples coupon days but for the last few years the cheaper models come with physically smaller 5.5-6Ah batteries.
Last edited by FatFaluz December 8, 2022 at 02:49 PM.
9
1
Dec 9, 2022
723 Posts
Joined Mar 2006
Dec 9, 2022
tygger
Dec 9, 2022
723 Posts
Tempted to get the generic for a bit less... Is OEM really better than this?

ML9-12 - 12 Volt 9 AH, F2 Terminal, Rechargeable SLA AGM Battery https://a.co/d/i43jKXO
Dec 9, 2022
9,168 Posts
Joined Aug 2018
Dec 9, 2022
TodayOnly
Dec 9, 2022
9,168 Posts
Quote from FatFaluz :
Good price for an APC branded, 9Ah battery. They usually go as low as $35-40, but you may not be able to catch a sale when your old battery dies and you need a new one NOW.

That battery has a lower 7.2Ah capacity and smaller F1 terminals so technically not RBC17-compatible despite saying so (one reviewer used pliers to compensate for the loose connection). Mighty Max does have a 9Ah battery with F2 terminals for $23.55, curiously shipped and SOLD by Amazon [amazon.com] which may or may not be a good thing: for SLA battery with a limited storage/shelf life, some may prefer the seller ship fresh stock directly from their own warehouse (as with your 7.2Ah listing).

OP's listing is good when your friend needs a battery, since you don't want to be blamed for getting an off-brand if it doesn't work. For myself, I usually buy at least 2, and I can get (2) 9Ah for around $40 shipped from battery specialists like BatterySharks.com. Those popular CyberPower 1350VA/1500VA UPS towers each take two 7Ah/8Ah/9Ah F2 batteries (model RB1270/RB1280/RB1290) if you reuse the old wiring harness.

Also, I ensure that the UPSes that I buy can take the larger 7-9Ah battery size (as smaller sized batteries aren't much cheaper). Those used to be commonly $40 and under back in the Staples coupon days but for the last few years the cheaper models come with physically smaller 5.5-6Ah batteries.
mighty max on ebay is a couple of dollars less:

https://www.ebay.com/itm/194184375393

https://www.ebay.com/itm/133780860195
1
Dec 9, 2022
1,358 Posts
Joined Oct 2006

This comment has been rated as unhelpful by Slickdeals users.

Dec 9, 2022
8,081 Posts
Joined Nov 2008
Dec 9, 2022
Hrshycro
Dec 9, 2022
8,081 Posts
Quote from lottathought :
Just an FYI.
I understand that this is not for everybody...but if you are a little handy, you can replace this Lead Acid battery with a DIY LI-Ion battery made with 18650's.
You get the same benefits here as you do elsewhere with this change.
For as much as they charge for these UPSes in the the first place, I'm surprised they haven't switched to lithium yet. They must be making a killing on the UPSes and the markup for stores must be huge too, due to the good sales on them at BF/CM.
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Dec 9, 2022
583 Posts
Joined May 2017
Dec 9, 2022
BillytheGOAT
Dec 9, 2022
583 Posts
Quote from Hrshycro :
For as much as they charge for these UPSes in the the first place, I'm surprised they haven't switched to lithium yet. They must be making a killing on the UPSes and the markup for stores must be huge too, due to the good sales on them at BF/CM.
Lithium ion probably costs them more and would probably make a lesser profit overall. Would be nice to have a small battery backup that actually works too. I have a decent sized one for my computer set up, but to have one for a modem or router set up in a different area would be nice. Those $35 battery backups tend to malfunction often.
3
Dec 9, 2022
759 Posts
Joined Feb 2016
Dec 9, 2022
Tisser12
Dec 9, 2022
759 Posts
Quote from BillytheGOAT :
Lithium ion probably costs them more and would probably make a lesser profit overall. Would be nice to have a small battery backup that actually works too. I have a decent sized one for my computer set up, but to have one for a modem or router set up in a different area would be nice. Those $35 battery backups tend to malfunction often.
Whereas it's still the same size I "Upgraded" my Cyberpower UPS with 2 LiFePo Batteries (with built in BMS) that were like 1 or 2 Wh larger and it's much lighter now, I still only get a couple of minutes (maybe 20-30 max at idle) of use before it shuts down but these should last a lot longer before they start to go bad and should handle most fluctuations and whatnot better than SLA.

They really do need to start offering Lithium options for the consumer grade. If I remember correctly they do have some Lithium powered UPS options for servers, but I agree I would love a smaller more powerful unit designed with Lithium in mind.
1
2
Dec 9, 2022
1,291 Posts
Joined Jul 2011
Dec 9, 2022
rcboosted
Dec 9, 2022
1,291 Posts

Our community has rated this post as helpful. If you agree, why not thank rcboosted

Quote from lottathought :
Just an FYI.
I understand that this is not for everybody...but if you are a little handy, you can replace this Lead Acid battery with a DIY LI-Ion battery made with 18650's.
You get the same benefits here as you do elsewhere with this change.
no you cannot. Li-Ion chemistry aren't close enough to SLA, you'll either be too low or too high voltage. Charging profile are also very different. LiFePo on the other hand, can.
5
1
Dec 9, 2022
3,004 Posts
Joined Jul 2004
Dec 9, 2022
DiMAn0684
Dec 9, 2022
3,004 Posts
Quote from TodayOnly :
new replacement batteries cost $21-22 on ebay for 12v 9Ah.
I've been buying 'generic' ones off EBay, and they run for ~5 years, which is in line with the lifespan I got out of the OE batteries that came with my APC UPSes.
Dec 9, 2022
1,831 Posts
Joined May 2005
Dec 9, 2022
liquid_celica
Dec 9, 2022
1,831 Posts
Quote from rcboosted :
no you cannot. Li-Ion chemistry aren't close enough to SLA, you'll either be too low or too high voltage. Charging profile are also very different. LiFePo on the other hand, can.
You're not wrong, but you're also incorrect as this has been done. The bms takes care of regulation for you. Go YouTube it out Google it.
6
Dec 9, 2022
1,291 Posts
Joined Jul 2011
Dec 9, 2022
rcboosted
Dec 9, 2022
1,291 Posts
Quote from liquid_celica :
You're not wrong, but you're also incorrect as this has been done. The bms takes care of regulation for you. Go YouTube it out Google it.
Don't need to, I've made several already using LiFePO, I also have a spot welder to do this properly instead of solder. You really want LiFePO, not regular Li-Ion, but I'm off topic.

I replaced my fiber router's UPS with a generic SLA from amazon, it died in 2 years, and that seems to be the norm according to reviews.
1
1
Dec 9, 2022
2,119 Posts
Joined Oct 2011
Dec 9, 2022
MWink
Dec 9, 2022
2,119 Posts
This deal isn't really that hot, unless you really want that APC sticker. If you need this, I'd just keep an eye out for a good price ($20-30) on a genuine CSB HR1234WF2 or CSB UPS12460F2. The former is often what you'll find under this APC sticker. I think the latter is just an ever so slightly better version. They're interchangeable. These are quality batteries and will likely last much longer than those cheap ones like Mighty Max (which I haven't actually tried) and so on.


Quote from lottathought :
Just an FYI.
I understand that this is not for everybody...but if you are a little handy, you can replace this Lead Acid battery with a DIY LI-Ion battery made with 18650's.
You get the same benefits here as you do elsewhere with this change.
I've never heard of anyone doing this. Do you have any links? This sounds extremely dangerous. I think you'd need some seriously beefy circuitry to regulate charging and discharging. In a UPS, batteries like these could have a current draw in excess of 40 amps. That doesn't even get into the fact that a UPS charges in a way that is totally unacceptable for Li-Ion cells.

Quote from Tisser12 :
Whereas it's still the same size I "Upgraded" my Cyberpower UPS with 2 LiFePo Batteries (with built in BMS) that were like 1 or 2 Wh larger and it's much lighter now, I still only get a couple of minutes (maybe 20-30 max at idle) of use before it shuts down but these should last a lot longer before they start to go bad and should handle most fluctuations and whatnot better than SLA.

They really do need to start offering Lithium options for the consumer grade. If I remember correctly they do have some Lithium powered UPS options for servers, but I agree I would love a smaller more powerful unit designed with Lithium in mind.
Quote from rcboosted :
no you cannot. Li-Ion chemistry aren't close enough to SLA, you'll either be too low or too high voltage. Charging profile are also very different. LiFePo on the other hand, can.
Where did you guys find LiFePO4 batteries that are compatible with a UPS? While I've seen plenty in the correct form factor, I've yet to come across one that claims to be usable in this application.
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Dec 9, 2022
1,291 Posts
Joined Jul 2011
Dec 9, 2022
rcboosted
Dec 9, 2022
1,291 Posts
Quote from MWink :
Where did you guys find LiFePO4 batteries that are compatible with a UPS? While I've seen plenty in the correct form factor, I've yet to come across one that claims to be usable in this application.
batteryhookup dot com. They had 26650 A123 cells, probably the best LiFePO cells ever made. I harvested some from DeWalt packs over 13 years ago that is still holding a charge today. They also had some K2 SLA UPS drop-in replacements as well, it looks just like this APC SLA with BMS built-in but it's LiFePO. The LiFePO's charging profile is also not the same as SLA, but it can tolerate it due to the robust chemistry. You can abuse the heck out of them and they wouldn't care.
Last edited by rcboosted December 8, 2022 at 10:25 PM.
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