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, 12 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.

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.

Great little setup for recharging batteries on the go. The 1 to 4 way adapter is slick and compact for traveling to not add weight and bulk. I got these for my older headlamp that doesn't take a rechargeable pack or have an internal battery and charge port. They are compatible with and function well in my old BD and Petzl headlamps. They are nice and light too. They are a great value from other more expensive rechargeable batteries. I got 2 packs so I can have a set in the headlamp and keep the spare to replace it with and charge up as to not be left in the dark

I want to start off by saying I love the idea of rechargeable batteries, I especially wanted something like this for my peltors, and it’s SCU, but once I put batteries in both my ear defenders and it’s control unit and placing it on my hip, it kept cutting in and out unfortunately, I went back to just some basic rayovac triple A’s and the issue went away, so I’m not sure if it was just something with the batteries they both are 1.5v but for some reason normal alkaline batteries work better, either way i was disappointed and would just stick to alkaline for THIS specific situation, these batteries do seem good nonetheless I just wish they would have worked for me, oh well, I hope everyone else has good luck with them.

Not cheap, but I've been using these over and over for about five years. They power my headlamp, gps, and weather radio when I'm backpacking. They're easy to recharge when needed using a power bank. They've held up well, and they're significantly lighter (30-40%!) than regular alkaline batteries

I've bought several sets of AA & AAA batteries for the portable toys, remotes and small electronics. They quickly pay for themselves with recharge cycles. The LED indicators makes it easy to know their status when you plug in 4 at a time, using the 4 way USB splitter cable included. With two teenagers in the house, these have saved us a lot of money over throw aways.

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.