APC Replacement Battery Cartridge #21 RBC-21
Mfg # RBC21
CDW # 271117
Know your gear
Over time UPS batteries wear out. This leads to a loss of power capacity and runtime. Here are four reasons why you should only use genuine APC RBCs in your APC UPS:
Use of a non-APC battery will void APC's Equipment Protection Policy
APC recycles used batteries and almost 100% of the battery lead content is reused, protecting the environment. With each purchase of a genuine APC replacement battery, you get free freight back to APC for proper disposal of your old batteries (currently available in USA only.)
APC provides a 1-year warranty on each Replacement Battery Cartridge.
APC supplies the appropriate instructions for your UPS, along with any needed wires and connectors. All connections are made with high current gas-tight crimps for high reliability.
Use of a non-APC battery will void APC's Equipment Protection Policy
APC recycles used batteries and almost 100% of the battery lead content is reused, protecting the environment. With each purchase of a genuine APC replacement battery, you get free freight back to APC for proper disposal of your old batteries (currently available in USA only.)
APC provides a 1-year warranty on each Replacement Battery Cartridge.
APC supplies the appropriate instructions for your UPS, along with any needed wires and connectors. All connections are made with high current gas-tight crimps for high reliability.
Enhance your purchase
APC Replacement Battery Cartridge #21 RBC-21 is rated
3.90 out of
5 by
7.
Rated 5 out of
5 by
gorilla from
Works great
Battery came with easy installation instructions. Battery change was easy. Swapped batteries and had it reconnected within 10 minutes.
Date published: 2010-09-17T00:00:00-04:00
Rated 5 out of
5 by
no name from
Works
This battery works as advertised. The one it replaced never quite did. The method of getting it and returning the old battery for recycling was straightforward.
Date published: 2011-07-30T00:00:00-04:00
Rated 5 out of
5 by
No Name from
Short life for service rendered
The replacement battery only lasted s couple of years and is awfully expensive for what was not more than a total of about 180 seconds of providing backup power during that period. Battery technology can be MUCH better than that.
Date published: 2012-06-30T00:00:00-04:00
Rated 5 out of
5 by
FFS CPA from
Battery Bad in the Box?
Installed replacement battery in my APC Back-UPS 500 VA, but immediately a warning tone was heard along with "replace battery" light. Tone and light don't go out until you physically detach battery from leads inside the unit. Have requested guidance from customer service; will advise further once I hear anything from them.
Date published: 2010-07-17T00:00:00-04:00
Rated 5 out of
5 by
easy to replace! from
money saver
this is cheaper than purchasing a new unit. batteries are easy to install.
Date published: 2017-05-08T00:00:00-04:00
Rated 5 out of
5 by
Jimbo from
Purchasing an APC Backup replacement battery
I easily found the correct battery replacement on their website by giving my Backup device model and serial number. This was 3 weeks ago and it's been working just fine.
Date published: 2019-06-06T00:00:00-04:00
Rated 5 out of
5 by
tleckels from
Just like new!
I have been using this UPS model number BF500 for over 20 years now and it is just as good today as the day I bought it. I am now on the third battery and it just keeps on going.
Date published: 2019-05-01T00:00:00-04:00