Rechargeable AA Batteries 1.5V 2600mWh USB Lithium ion Rechargeable AA Battery with USB Type C Charging Cable, High Capacity Fast Charge, 1200 Cycles Constant Output, Over-Charge Protection,4-Pack

My bf just wanted to get these for his toothbrush and electric shaver since he goes through so many batteries. These actually provided more power to each of the devices than regular batteries, so i was impressed. You could actually feel the difference in power.The charge it came with only lasted about a few weeks of moderate use, but we haven't had to recharge them since the first time and it's been almost 2 months.They charged pretty quickly, unfortunately I don't know the exact time. We plugged them in before going to bed and they were good to go in the morning.I like the way they recharge too since they come with cords you plug directly into the batteries and you don't need to put them in a separate battery charger.We're not using these for anything crazy, so we're happy with them. We actually ended up buying another size from this company/brand and they work just as well.

I have several battery powered things in my house, and in most cases the cheap batteries work good enough. But in some items (especially with motors) they don't work, and even the expensive name brand alkaline batteries fade fast, and cost adds up quick. This is where lithium rechargeable really shine as voltage stays constant until they are dead (both good and bad) . I like that you don't need a separate unique charger for these, and unlike some other "AA" lithium batteries (delepow) these are the same size as AA batteries allowing them to be used in appliances that have tight tolerances

I have bought many of these use them all over the house and have extras to swap out when needed. Highest capacity for the price. Don’t seem to work well with smart scale shows low battery after day one of swap but still worked for a month.

good value for the cost, seems to be working well

I thought these were a bit expensive but looked like what I needed. Charged all 6 I purchased per the instructions and according to the built in charge indicator they charged fine. Put them in two identical flashlights and one worked fine and one was dead after two days. Upon checking one battery was dead. Charged again and the same result, that one would not hold a charge. Tried to contact the manufacture using the email in the instructions and got no reply. Searched online and tried the email contact I found on a website for the company, again no reply. The remaining batteries that held a charge are still fine after a year. So for me a one in six chance of a bad battery. EDIT 1 YEAR LATER, These are now not holding a charge for even two weeks, take forever to show full charge then will discharge even if not used. Totally useless for the expensive cost, I expected better quality. Tried sending emails to the customer help line (two different email addresses) and did not receive any response. Don't waste your money.

This is great, didn't want to see the old batteries in the trash.

The battery works well, however, I only gave this product 3 stars because the battery does not hold charge when it is not in use. The rate of self-discharge for lithium-ion batteries is typically around 0.5-3% per month. My experience has shown that this battery will lose most of its charge in less than a month.

much easier to charge with usb ports and charging indicators within each battery, than dealing with an external charging device