50-Pack CR2025 Renata 3 Volt Lithium Coin Cell Batteries

Okay- so the batteries are just batteries, right? No real review needed. However, I was perplexed to have a 25 pack (yes, 25 batteries) available for half the price as the two pack....something like 3.50 vs. 8.00. What? I mentioned it to the guy at checkout to say that I would be wasting batteries if I got the cheaper, which is why I just bought the two pack. He said, well, you know, bulk pricing. Ha! Okay.

I previously gave this product a 1-star rating due to rapid draining in recent months. Today I learned this is a known problem with the device (Fitbit Zip) due to a software glitch that they haven't been able to fix. So, I no longer believe the batteries to be the problem and would like to rescind my earlier review; if that's not possible, let this 5-star post at least partially offset it.

Can't say how these would work in other products. I purchased for 3D glasses. The batteries charge shows on my TV screen when I activate glasses. After about a month one battery is still at full charge the other has about 1/4 charge. Glasses were used equal time. They worked but not all that pleased about that big of difference in battery life.

Most car key fobs require this type of battery. When my fob died after a few years, I was hunting all over for these batteries. When I did find them at a drug store or other retailer, I was met with a high price. This pack offered two batteries at a reasonable price. It was a no-brainer.

These are the standard batteries for our iSmart Alarm system, they last about 6 months each, not bad. They are NOT good for guitar tuning systems. Not sure why, especially since I don't play with the tuning system constantly on. But they do what they need to do, power things!