12V 8Ah Replacement Battery for APC Back-UPS ES BE550G - Neptune

PdreviewPdreview: This is my third purchase of this battery for my Fios Cable Box. Super quick install.

United States on Aug 06, 2023

notsoNEWKINDLEUSER: The fios box needed a battery change. This is a standard alarm system battery. This comes with adapters for whichever battery terminals you have. So easy change, all good. Hope it is fresh and lasts awhile.

United States on Jul 25, 2023

Jay Patterson: Bought two of these for an APC Smart UPS C1000. They have the correct dimensions and Neptune included terminal adapters. Been running in my UPS for almost a month now with no problems. Assuming they last as long as the ones APC supplied, a good deal. About 1/3 the price. I don't think there's anything special about the originals. Peeling off the APC stickers revealed that they are just typical SLA batteries from one of the various manufacturers in Vietnam. The originals lasted about 4 years

Some details that I think other shoppers will find useful to know:
- These batteries are also made in Vietnam -- says so on the box. But according to their website, Neptune is based in Miami and has a hand in their engineering and quality assurance
- Each battery was in a Neptune cardboard box of decent thickness
- Both batteries were shipped in a padded FedEx envelope in such a way that they were bound together as opposed to bumping into each other inside a big box. Combined with the individual cardboard boxes, they seemed well protected from being damaged during shipping
- Terminal adapters were included ... and required for my APC. Very thoughtful,...

United States on Feb 15, 2020

Dan T. S.: The quality of this battery seems to be very good and it was 1/2 the price of the original Verizon battery. It was very easy to install and was in place in a couple of minutes. It comes with a set of two terminals that are wider than the ones on the new battery. If your Original battery had the wider terminals you simply wiggle the new ones over the ones on your new battery and then your ready to hook up. I used a popsicle stick to push them on because they are a tight fit. I used a trickle charger to charge it to full capacity before installing. They do recommend charging before installing. This is so your battery will last as long as possible. I buy cheap car batteries from Walmart and they last 5 years. If you charge this battery before installing I will guess that it will give you long service.????

United States on Jan 27, 2020

John Ellis: I got a total of 4 of these. Two for an UPS with failing cells and 2 for my son's ride-on toy. The ones in the UPS are performing fine. The ones on the toy not so much. The company was super understanding and sent me replacements for the ones that failed but I think it's a combination of operator error (overheating when soldering on the wiring harness) and the cells not being able to withstand the vibration that this little cart generates. The first set lasted about two weeks before at least one internal cell shorted/failed (dropped from 12.6 volts to 11.0). I replaced that one and the 2nd battery had the same problem a week later.

Update.....the set in the ups finally just died (Nov 2021) Almost exactly the 2-year mark. APC ups throwing error. Checked the cells....one was barely at 12, the other nearly 13 volts.....but would immediately fail a load test.

United States on Oct 16, 2019