LiCB LiCB CR1620 3V Lithium Battery CR 1620 (10-Pack)

Amazing battery, very helpful and cost effective

These batteries work exactly as they should and fit my Mazda key fob perfectly. However, keep in mind that they only last about 4 to 6 months. I bought a 10-pack two years ago and I’ve replaced the battery four times. If you don’t mind the 5-minute task of swapping them out, the price is hard to beat. But if your device is difficult to open or you want a "set it and forget it" battery, then this product mightnot be for you.

It's hard for me to judge how good these batteries are because I usually put them in something that I rarely use so they may sit in a device for a while before I use them again. But, they all have worked the first time that I've used them. Because they are inexpensive, they work fine for me. When I push the button on the back of Mr. Burns, he says, "Excellent!"

I bought these for my Subaru car key. The factory battery lasted five years. I went through all ten of these in a little over two years. Just finished the pack. They get very flaky after a month or two. They will keep working but I need to push the button a dozen times.. Buy a better battery and save yourself the headache.

I bought these 8 years ago. They worked fine in my car's key fob. For a few months each. It started driving me absolutely bananas. Getting into the fob is always a small project. I bought the car brand new, and the initial battery lasted for 9 years, I went through all 10 of these in 7 years, so what's going on? Well, turns out not all batteries are created equal. LiCB batteries have an OK starting voltage but cheap knockoffs frequently cut costs on the chemical purity of the lithium/manganese dioxide, resulting in significantly lower actual capacity and voltage drop when the fob transmits. I spent roughly the same amount for 2 of a big name brand (the one with the bunny) and so far it's lasted a year with no problems. At least I've learned about how these batteries are made. Takeaway: skip this pack and buy a single good one (or two) unless you enjoy swapping batteries for some reason.