Lithium batteries. They are terribly expensive. Probably less expensive here than other places. Still pricey. I give them 3/5 stars because I haven’t noticed anything particularly wonderful about them. The absolutely work for their intended purpose. But I still think they cost too much.

I find that I'm going through a surprisingly large number of these Lithium batteries in occasional use items like LED penlights and LED headlamps. Not sure they last as long as alkaline batteries but Lithium provides better performance at low temperatures which I need.

The best batteries I have ever used. They can withstand severe cold temperatures without affecting performance or shortening life span. I use these in outdoor wireless cameras all year round, and they last over a year in each camera. Truly awesome and worth the price.

I keep a good supply of these batteries onhand, but I still resent the exorbitant price every time I replenish my stock. Keep these in hard to reach devices, and for powering things exposed to humidity swings. Never had one corrode on me yet. I guess theyre worth it.

Based on previous purchases of these Lithium batteries, I found the Sam's Club price to to be far lower during this sale than other stores, so I purchased two 18-Packs to power all of my battery operated devices. They last much longer than non lithium batteries and stand up better under extreme temperature variation - both hot & cold. Great for outdoor weather stations and outdoor cameras!

Might be a little pricey but they don't leak like alkaline batteries

I do not know if these "Ultimate Lithium" batteries will really last but they are expensive.

Cost is to high, for what you get.

I have been using these long life high quality batteries in critical devices I own.

Great lithium batteries. Exactly what I was looking for!