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3YR WARRANTY 12V 3AH SLA Replacement Battery for APC Back-UPS ES 350 VA
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  • $22.88 
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PowerStar® UPS Battery for APC BE650R Lead-Acid Battery 12V, 9Ah
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  • $39.88 
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RBC35 Replacement Battery Cartridge for APC Back-UPS ES BE350 Series
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  • $22.88 
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UB1230 RBC35 Replacement Battery Cartridge for APC Back-UPS ES BE350C / BE350R
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  • $22.88 
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PowerStar-RBC2 RBC17 APC UPS Battery Pack Replacement BK400 BK300 BK500
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  • $39.88 
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CA1212 12v-1.2ah Battery Replacement for Data Shield 1200 UPS Battery
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  • $22.77 
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RBC35 Replacement Battery Cartridge for APC Back-UPS ES BE350C / BE350R
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  • $22.88 
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PowerStar® Replacement UB1290 12V 9Ah APC UPS Computer Back Up Power Battery - 2 Pack
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  • $59.99 
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PowerStar 12V 3.3Ah Replacement Battery for APC BE350U - APC RBC35
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PowerStar 12V 3.3Ah Replacement Battery for APC BE350U - APC RBC35
  • Parts: 2 Year Warranty
  • Model #: PS12-3.3--000
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  • $22.88 
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PowerStar RBC21 APC RBC21 Replacement Battery for APC BackUPS BF250 BF280 BF350
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  • $23.88 
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PowerStar® High Rate 12V 9AH Tripp Lite OMNI650LCD, OMNI 900LCD UPS Battery
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  • $39.88 
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PowerStar® APC RBC2 Battery Replacement for APC BK400 - PowerStar 12V, 9Amp
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  • $39.88 
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Replacement Panasonic UP-RW1245P1, UPRW1245P1 12V 9Ah UPS Battery by POWERSTAR
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  • $39.88 
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BatteryJack  Intelligent LCD CP1500AVRLCD 12V 9Ah UPS Replacement Battery
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  • $39.88 
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12V 7.5AH For 12V 9AH Sealed Lead Acid Battery for UPS/Surge Protector
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  • $22.88 
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PowerStar--UPS Surge Protector 12V 9AH Sealed Lead Acid Battery
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PowerStar--UPS Surge Protector 12V 9AH Sealed Lead Acid Battery
  • Parts: 2 Year Warranty
  • Model #: PS12-9-9898
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  • $39.88 
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12V 3AH ML3-12 - SLA UPS Battery Replacement for Long Batteries WP312
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  • $22.88 
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12v 7ah UPS Battery replaces 7ah Enduring CB7-12, CB-7-12 - 2 PACK
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12v 7ah UPS Battery replaces 7ah Enduring CB7-12, CB-7-12 - 2 PACK
  • Parts: 2 Year Warranty
  • Model #: PS12-7-2Pack5
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  • $49.88 
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PowerStar Strong 12V 3.3Ah Replacement Battery for APC BE325R RBC35
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  • $22.88 
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12V 7AH Sealed Lead Acid (SLA) Battery for UB1280 APC SmartUPS 1400RM 2200RM3U
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  • $49.88 
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PowerStar--12V 18Ah UPS Battery Replaces Werker WKA12-18NB NOW 22AH LONGER LASTING
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  • $55.88 
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PowerStar--12V 7AH RBC2 Battery for APC 300 BK400 BK280 BP280 NEW - UPGRADED 9AH
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  • $39.88 
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PowerStar--High Rate UPS Replaces Vision CP1270 F2 CP 1270 F2 MK ES7-12 T2
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  • $39.88 
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12V 7.5AH SLA Battery replaces pxl12072 lc-r127r2p1 wp7.2-12 sh1228w - 2PK
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  • $34.88 
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Replacement 12V 7.5AH for UB1290 / UB1290F2 - Sealed Lead Acid - 12 Volt Battery
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  • $34.88 
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2 Pack - 12V 10AH BATTERY REPL.UNIVERSAL UB12100-S, LONG WP10-12
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2 Pack - 12V 10AH BATTERY REPL.UNIVERSAL UB12100-S, LONG WP10-12
  • Parts: 2 Year Warranty
  • Model #: PS12-10-2Pack34
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  • $59.88 
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New Replacement Battery for JNC660 / JNCAIR / JNC 660 by POWERSTAR
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  • $55.88 
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12V 7.0AH Sealed Lead Acid (SLA) Battery for Universal ALARM CONTROL SYSTEM
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12V 7.0AH Sealed Lead Acid (SLA) Battery for Universal ALARM CONTROL SYSTEM
  • Parts: 2 Year Warranty
  • Model #: PS12-9-POWERSTAR-57
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  • $39.88 
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PowerStar 2 Pack - 12V 9Ah Razor Ground Force Drifter Go Kart Battery - 2YR WAR
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  • $59.99 
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6V 5AH Replament for 6V 4AH (SBS640) Maintenance-free Sealed(SLA) Battery POWER
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  • $24.88 
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PowerStar 9AH Upgrade For 12V 8.5AH SLA Battery replaces hr1234w
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PowerStar 9AH Upgrade For 12V 8.5AH SLA Battery replaces hr1234w
  • Parts: 2 Year Warranty
  • Model #: PS12-9-85135698
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  • $39.88 
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LC-R121R3P Black Medium 12V 1.3Ah VRLA Battery with F1 Terminal by PowerStar
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  • $22.77 
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PowerStar--12V 8AH SLA Battery replaces WKA12-8F2 DJW12-8HD TPH12080 F2 - 2PK
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  • $59.99 
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PowerStar 12V 22Ah Battery Replaces CB19-12, ES1217, UB12200, LC-RD1217P
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  • $55.88 
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PowerStar® Vision CP1290A - 12.00 Volt 9.00 AmpH SLA Battery
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  • $39.88 
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12V 3.5AH SLA Battery replaces PE12V3AF1 PS-1230 UB1234 WP3-12 - 2PK
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  • $48.88 
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Whether you have a busy data center or web servers that need to be constantly online, UPS accessories help you ensure that your surge protection system is efficient at all times. Make sure to consider the coverage time provided by the UPS power bank, and to have replacement batteries for your UPS system if required.

The UPS Protects Data and Keeps the System Running

UPS stands for “Uninterruptible Power Supply”. This device is essential in mission-critical environments and data centers since it prevents downtime in case of electrical failure. It’s able to provide backup power, allow the computer or server to shut down properly and prevent data loss. Different types of UPS surge protectors are capable of providing backup power for different amounts of time. You can also set them up to alert the server when the battery is running low, so it will shut down correctly before the power source fails. 

Know When It’s Time to Get UPS Replacement Batteries

The battery in your UPS surge protector wears out over time, just like the ones inside your laptop and smartphone. It gradually loses its original capacity. Some UPS models test their batteries regularly to make sure they can offer enough backup power for the right amount of time. Use software to monitor how fast the battery loses capacity, or take note of the time it takes to go off. Luckily, UPS replacement batteries are easy to find and install. As a rule of thumb, you should replace the battery every three or four years.  Most UPS power supplies have a battery slot that's similar to the one on your laptop where you can find the worn-out battery.

UPS Network Management Cards Let You Monitor Your UPS Power Supply Via a Secure Network 

UPS network management cards, like the APC® AP9631 and APC AP9630, add extra functionalities to your UPS surge protector. They allow you to monitor your UPS system via a secure network browser using the IPv6 protocol. They use device encryption to connect via HTTPS/SSL, SSH and SNMPv3. These UPS accessories also notify you when a problem occurs, so you’ll be able to prevent downtime or data losses. Network management cards offer data and event logs to help you identify problems in advance.

External Battery Packs Extend the Uptime of Your UPS Surge Protector

Some UPS models can work with external batteries to offer even more protection from electrical failure. They work similarly to the power banks you use for your smartphone, as they extend the runtime of the UPS power supply after the battery inside has died. Most external battery packs come with a cord, which goes into a dedicated connector. Some models, like the Tripp Lite® BP72V18-2US, have daisy-chain connectors to add multiple battery packs to the same UPS surge protector. Many external UPS batteries have unique designs that allow you to stack them in racks and create a tidy set up in a data center. Browse Newegg to find all of the available power supplies today.

Bestselling UPS Accessories Reviews:

Chris M.
8/30/2025 6:26:54 AM
It had over an 80% charge when it arrived

“ Changing these batteries out is a PIA because of the number of things that are plugged into the UPS. ”

CyberPower RB1270X2A UPS Replacement Battery Cartridge 12V 7AH
Anonymous
7/25/2025 3:45:05 AM
Perfect replacement

“ You can't buy generic batteries for my UPS, I think due to the proprietary connector they use. ”

APC by Schneider Electric Replacement Battery Cartridge #161 APCRBC161
Thomas D.
3/21/2025 6:30:08 AM
Solved My Problem

“ This happened about 3 times before I suspected my UPS. ”

PowerStar--Replacement UB1290 12V 9Ah APC UPS Computer Back Up Power Battery - 2 Pack
David C.
1/25/2025 3:39:13 PM
Perfect replacement

“ According to the UPS, estimate time with the same setup seems to indicate more time than with the original battery. ”

APC by Schneider Electric Replacement Battery Cartridge #161 APCRBC161
Joseph D.
1/11/2025 9:22:25 AM
Prompt delivery, perfect fit!

“ Looking forward to a few years of trouble-free UPS-ing. ”

APC by Schneider Electric Replacement Battery Cartridge #161 APCRBC161
Gary R.
12/1/2024 5:06:45 PM
Much better than my do-it-yourself solution

“ Battery pack fits into the UPS easily. ”

CyberPower RB1290X4F Battery Kit
David M.
6/21/2024 7:49:36 AM
Great product

“ Unfortunately the day after I ordered the battery we had a power surge and POP the UPS system is dead. ”

APC UPS Battery Replacement for APC UPS Models BR1500G, BR1300G, BX1500M, BX1500G, SMC1000-2U, SMC1000-2UC, BR1500GI, SMC1000-2U, SMC1000-2UC and select others (APCRBC124)
Jake J.
6/19/2024 10:34:35 PM
Keeping my Beloved APC going...

“ HDD failures before using an uninterrupted power supply unit: 3 ”

APC UPS Battery Replacement for APC UPS Model BR1000G, BX1350M, BN1350G, BR900GI, BX1000G, BX1300G, SMT750RM2U, SMT750RM2UC, SMT750RM2UNC, and select others (APCRBC123)