ExpertPower® 12V 8AH Sealed Lead Acid (SLA) Battery Replacement for APC Back-UPS ES 550VA Back-UPS Pro 1300/1500 Liftmaster CSL-24VDC Slider Gate Opene - F2 Terminals

For anyone needing to replace their battery in AT&T's Nokia FIOS unit because it's chirping... this battery works great. The expert power battery is an affordable and quality option versus the brand that came installed in the Nokia unit when I had fiber optic internet installed. (That one lasted a year and the exact brand replacement was expensive) The expert power brand batterywill last about 2-3 yrs. *Note- you can silence the annoying chirp alerting you need to replace the battery for 24 hrs by pressing and holding the blue button until it makes a chirp noise. That way you can at least get decent sleep if you can hear the chirp from your bedroom. Just re silence the chirp for another 24 hrs until new battery arrives 😉

I got it next day and installed it immediately. Works perfectly! I had so many kinds to choose from and I could eliminate the chirping noise from the old battery in one day!!

Seems to be a good battery. Fits my APC BACK-UPS ES 650, which was not mentioned in the description. It came with a charge but I let fully charge before my simple test. My computer with two monitors are drawing 70-100 watts and when i unplugged the power it ran for a full 10 minutes, with me still using the computer, before I decided that was adequate and plugged it back in.

Very nice

Great!

Delivered as promised easy to install, service life is undetermined but the battery it replaced was same type and specs lasted 7 + years.

Well, I guess the question is: Is anyone testing these batteries with an Ah tester when they arrive?I ordered two of these batteries, and one read 13.03v at 5.56Ah & the other at 13.05v w/ 3.06Ah.The batteries should have OVER 8Ah when new and coming from the factory.The only code on the batteries was 1610E, which could mean 16102015 (or maybe Oct 2016/E). So potentially they were manufactured on 10/16/2015... which means over a year old. (You never want lead-acid or SLA batteries that have been sitting over 6 months, as a rule.) ...or they were made in Oct 2016 and just really BAD batteries.Neither battery took a charge with a standard SLA battery charger, so I think they are both bad at this point.UPDATE:1) I contacted Amazon and they told me just to recycle them; Amazon refunded my money and I ordered a completely different brand2) I tried putting put one of these batteries in the UPS it was intended for, just to see if it might take a charge - it started beeping within 15 minutes! So not only does my $500.00 Ah tester thing the batteries are bad, but the $100.00 APC UPS thinks one of the batteries is bad as well.I realize that most people don't have test equipment for 12v SLA / AGM batteries, but I suspect that more of these batteries are significantly under par or plain old bad.(I test them with an Ah tester [ACT Gold Intelligent Battery Tester] when I get them and then write the initial reading on the battery. This way I can go back at a later date, usually a year or two, and know how the battery is doing over time.)

This is yet another battery for my old UPS.six screws out, release two connectors, reverse procedure and power up.Nice to get this working so easily.Sure wish the company could have a 'F2' printed someplace on the battery so that in future I do not have to measure the terminal to see if I need 0.187 F1 type or the 0.250 F2 type. Oh well, I put a label printed on the case of my UPS and on the battery for my future needs. Yes, this is F2 type and the terminals are very good quality and will hold connection to my wire nicely.