4 Pack CR2 Battery,Rechargeable CR2 3V-3.7v Lithium Batteries, 4 in 1 USB Type C Rechargeable Lithium CR2 CR15H270 15270 Batteries, 300mAh,1.5Hours Fast Charge(NOT C Battery)

I haven't been using them long but for the short duration I have been using them I'm very satisfied.

Excellent batteries due to the USB charging anywhere anytime. No clunky charger.

They work as advertised.

Most worked. One of the batteries in the pack already had a green light on and it does not charge the rest were fine and hold a charge. I use for nest sensor and has held a charge for a couple months

The media could not be loaded. I made the mistake of trying to save a couple dollars from the brand I normally buy on Amazon and what I got was a horrible experience with these batteries that do not properly accept the USB type c plug because the port is not aligned with the battery casing, as you can see in the photo and in my video. You're going to scrape up and crush and ruin your USB type-c plugs trying to get them in, and worse you're going to short out the batteries.But that may not matter a lot because almost half of them, three out of eight, we're bad right out of the box with fast flashing green lights indicating trouble. Not that there were any instructions to tell me what that meant so I had to go digging on the net. It means a problem.Very poor manufacturing quality can't even align a case and a port and now I'm supposed to trust this in my home with my children not to create a problem?No, I'm not keeping these and they're going straight back to Amazon for a refund. I'm going to go back and order the more expensive ones which end up being much cheaper in the long run because they all work, all the time, and I would encourage you to buy a different brand than this one.In case any of the above is unclear, I absolutely DO NOT RECOMMEND these poorly made and possibly dangerous batteries.

Would Highly recommend this product but only to seriously dedicated buyers!!!Lol try not to show everyperson you come in contact with and try not to ambitiously search for the closest nieghbor to present the secret!! Shhh tell them abt this product only if they are genuinely interested and ask specifically about this elite product. And always remeber to never forget!

Seem to have more power & last longer than normal batteries.

good