1.5V Rechargeable Lithium AAA Batteries-Full Recharged 4-Pack with Ultra Fast Charger,1100mWh High-Capacity Long-Lasting Triple AAA Li-ion Battery,Up to 1600 Cycles,Constant Output(4AAA+1Charger)

These lithium AA/AAA batteries are great. I had purchased some earlier versions from a different manufacture, and they were not as good as NiMH batteries. Those batteries had lower capacity than the equivalent high-capacity NiMH batteries. These batteries have equivalent capacity and work in things that will not work on NiMH batteries because they need 1.5 volts to operate properly (as compared to the NiMH 1.2 volts. One thing to note is that they do not die gradually like alkaline and NiMH batteries do. They keep the voltage constant until they are exhausted and then they shut off. They do make a version that does have a gradual drop at end of charge but I don't think that's necessary for most applications.

Everything works fine. Only one battery is constantly in charging mode. And the charging on it does not turn off.

I bought these for an electronic door lock. The lock had issues and was draining batteries way too quickly. The software issue was never resolved and I just removed them. We now use them throughout the house for other devices and they work great. I have both AA and AAA now.

Lose charge quickly

These are very good batteries

Charger is one of the better if not best functioning chargers for AAA Li-ion batteries I've used. Very informative display on battery charging condition and quick charges. Batteries function as you should expect. Longevity/quality on both batteries and charger is yet to be determined.

These batteries don't even last a quarter of the time at traditional battery would last. I spent the extra money because I wanted a good option. I would not buy again.

Batteries and charger arrived, with batteries still almost fully charged. Placed batteries in charger, within less than 30 minutes they were at 100%

The item function as advertised