I'm so glad that I purchased this!!! I have Verizon Fios in my house and the battery died in the Verizon unit downstairs. The beeping is so annoying and can be heard throughout the house. I had replaced the battery like two years ago and it just recently died. I was preparing to purchase another battery then realized the battery I bought on Amazon was rechargeable. The battery I have is ExpertPower 12V 7 Amp EXP1270 Rechargeable Lead Acid Battery. I used this charger to recharge the battery on a standard outlet overnight and a few hours the next day so maybe a total of 12 hours. I didn't have anything to test how much juice my battery had after I charged it. I put the battery back into the Verizon Fios unit and the beeping stopped! Thank goodness! I've been beep free for about 5 days so far!

The Sealed Lead Acid Battery Charger worked as advertised, and the cost was reasonable. Unfortunately, the clips are a bit too small which made it difficult to clip the charger to the battery in my application.

This is listed as a two pack but the package only contained one charger. The package is also labeled as a two pack. I recommend only buying the one pack. Other than that it is an ok charger.

Hard to use the alligator clips. The insulated shield is slippery and makes opening the clips difficult. Once connected, it seems to work. I wish I'd spend a few dollars more for a charger that wasn't quite as barebones.

Worked just fine, aligator clips are tiny, hard to use. The plastic covers are for larger wire & clips, so they slide around and have to be removed so you can try to use the tiny alligator clips