paleblue USB Rechargeable AAA Lithium Batteries, 1 Hour Charge Time, Recharge Over 1000 Times, 600 mAh, 4-in-1 USB-A to USB-C Charging Cable, 4 Pack

I own a business and personally use these batteries. They are the best thing in the world. They recharge in less than an hour. They run for days upon days months upon months. Depending on the application. In my mouth, it lasts two or three or four months. In something that has a higher demand it might last 30 days. So I buy backups and we just swap them out and charge them and have the others ready. They sit charged very well. We’ve had some that sat for 60 days and still had a full charge when we needed them.

UPDATE! Pale Blue contacted me, and I have received their latest generation of battery with a lifetime warranty. The new batteries are the correct size for my flashlights and are correctly retaining their charge. I am updating my review to five stars. OK, I will be honest. I bought these in 2022. I think that Pale Blue has discontinued the Micro USB version. Now the problem I have had. The outer diameter of the battery is too large to fit my flashlights. Other brands of Lithium rechargeable batteries work just fine. So I use these in my blood pressure monitor. They lose charge in a couple of months. Even after a charge, the monitor says the voltage is low. Two different brands of monitors report the same problem. I've used alkaline batteries without this problem. So the big question? Has Pale Blue fixed this problem with the latest versions? To recap. 1. Outer diameter is too large to fit in a space designed for for a standard AAA 2. Charge retention time is substandard compared to their competion. 3. Something is wrong with the amperage or voltage. Devices report the battery charge is low even after charging. Honestly, I rarely report a negative review. In this case it's warranted.

Lithium batteries hold their charge and these ones have a cool built in USB C charging slot so no need for bulky chargers.

I bought a pack of AAA and AA's from paleblue to test them out to see if they'd be a viable replacement for my devices. I've since replaced all the batteries in my everyday devices with paleblues. Wireless mice and keyboards, TV remotes, flashlights, Xbox Controllers, and so forth. They put out a true 1.5V from start to finish, which is both a good thing, aaaand a bad thing that's worth pointing out. A lot of battery life detection systems use the voltage to tell when the battery is low or dead. In a typical alkaline battery, the battery will start a little above 1.5V, and then drop down as it goes, so when the device detects about 1.2V or lower, it can tell the battery is drained and will notify you. These don't do that, they just die without warning. I can easily excuse that side effect with the longevity of these batteries, however. They last forever, and I can charge a pack of 4 in under an hour. I just keep a pack fully charged on shelf so if any die, I can quickly swap them out, just like I would with typical batteries, but now I don't have to keep buying the huge Costco packs to just throw them away. Save your wallet, and save the planet. Buy paleblue.

Works nicely in a remote control. Charges quickly. A little cumbersome to have to plug in each battery instead of just inserting them into a recharger.

These are the only rechargeable AA and AAA batteries I've run across that actually provide 1.5 volts. Their total amp hours are lower than a disposable but since they charge quickly you simply buy a spare set and keep it charged. Being able to charge four at a time with the included USB-A to USB-C connector is a serious improvement over having to carry around a bulky battery charger. One word of warning - devices that warn you of depleted batteries generally do so by monitoring the drop in amperage delivered. Lithium Ion batteries, include Pale Blue batteries, don't have a gradual drop off in amperage. They run until their exhausted so there's no warning the battery is nearing depletion. Therefore, these aren't recommended for door bells, fire alarms, etc. However they work perfectly in everything else.

So far, so good. The battery maintains peak power, which means it doesn’t last as long as I expected but it’s fine since it comes with four batteries.

I like this whole concept. Super convenient over buying a bunch of batteries for my remotes. Now that i tried it I will be getting more for my other devices