APC BACK-UPS ES BE550R Replacement Battery

The science guy: This goes in my apc backup. Battery came charged and fit into the backup battery perfectly. The red light that was blinking by the on/off button did not go off, thus I thought the unit was defective. I found out online that all you have to do is to unplug it, and push the on/off button for 5 seconds, the light stops blinking, and the unit works. Very pleased. This is used at my job and there is nothing my boss dislikes more than spending money on new equipment.

United States on Jan 22, 2023

Busygeek: These batteries last 5 years, give or take, which is what can be expected. I've been through more than half a dozen of these in the UPS boxes I have. Never had a problem. They perform just as well as the brand-name batteries they replace - at a significantly lower price.

United States on Jun 24, 2017

ms-waterloo: We use several APC battery back-ups at work and the batteries die after a few years. In the past, the cost of replacement batteries was nearly the same price as getting a new UPS unit. I was leery of using other manufacturer batteries and it wasn't clear which batteries worked with which units.

After reading a review on Amazon, I peeled back the sticker/label on the OEM battery in my UPS unit and it exactly matched one of the options available on Amazon. The batteries without the extra OEM sticker were less than half the cost of a battery from an Office Supply store or from APC's website. Additionally, we don't have old UPS units to go into a waste stream. Our municipality recycles the old batteries for us.

Amazon delivered the batteries in durable packaging in a timely manner. We have been using 6 replacement batteries since early Spring without a problem. I realize this is not a long-term service life confirmation but I will revise this review if battery life turns out to be a problem. I recommend this product.

United States on Oct 27, 2013

LFE3: In my opinion, APC does a tremendous disservice to the environment by making their brand name batteries so expensive to replace. Historically I have found it less expensive to find a good sale price for a new unit and throw away/recycle the old unit than replace the battery with an APC replacement. These batteries are an economical replacement that works. In fact, APC can't say that you're replacing it with a cheap Chinese battery since the OEM batteries I've replaced were always Chinese batteries with the same or similar brand names. Good, cost effective, environmentally sound, and it just feels good to fix something rather than replace it!.

United States on Sep 06, 2013

Amazon Customer: I have waited severl weeks before writing a review. While the terminals are smaller than the orginal battery, it has worked through one outage with no issue. I would like for the connections to be firmer, but it does work.

United States on Feb 07, 2013