Don’t waste your money! I bought these to use in outdoor Christmas lights….they didn’t last any longer than the non-ultimate version.

I'm disappointed that they work for 48 hours on my Blink doorbell.......i don't understand how these are any better than regular batteries.

We had five batteries in this pack that were dead straight out of the package. The purchase date was six months before we tried to use them.

Batteries are good and they don’t leak although they are expensive and when they die they die all at once.

Batteries were best price around but found they were old and didn’t last a week in my game camera. Waste of money.

Good quality battery. Easy to use, fit and capacity is great. The packaging is simple and easy. A consistent company with high quality batteries.

Great "Cold Weather" battery. My outdoor weather station stopped reporting with the recent cold weather. I shifted to lithium batteries, per direction from the weather station manufacture, and my station is working again.

I have battery powered shades in my home. Nothing but lithium batteries work and last due to daily operation of the shades. I get a couple of years out of each shade without changing batteries. For daily use this is the only type to use.

These are excellent long life batteries. They will go much longer than regular batteries. They are really the only batteries you can use in Blink cameras. As such I buy these batteries pretty frequent, and I've never been disappointed.

I purchased these because my Nest fire alarm sensors will not allow rechargeables; I found these holding a great charge and that is why Nest requires them.