USB-C Rechargeable AA Lithium Batteries, 1.5V 3400mWh, Recharge up to 1000x Times, 4-Pack Double A Battery with 4-in-1 Charging Cable

I bought these 6 months ago. I use them with my mouse and media remote for PS5. They've been very useful so far. I like them so much, I had to purchase them twice. Disclaimer, I do notice they run out of power faster than a traditional battery, but that's a non-issue since it's rechargeable.

I made a purchase and started using it.After 1 month of use, 2 batteries stopped recharging, I was frustrated because I live in Brazil and this no longer works. I didn't like what I bought and paid a lot for it to no longer have functionality.How do I get my money back and return these batteries?

These batteries are fantastic in medium power and below applications. Don’t trust any review that say otherwise.I use these in many device types:1. Blink Wireless Camera2. Oculus Quest 2 controllers3. Xbox controllers4. TV remote control5. A portable medical pump that needs fresh alkaline batteries every day. I get 3 days out of one charge of these AA cells.Charging via USB-C is super convenient and they charge quickly, less than an hour from empty. I charge all 4 with the included 4X USB-C to 1X USB-A dongle. Wish the included dongle was USB-C on both ends.I have saved over 700AA batteries in 6 months of using a single set of 4 of these AA cells.As long as you keep them at discharge rates of less than 1 amp they are the ultimate replacement for alkaline and lithium disposable AA batteries.I’m buying more now.

Before this purchase, I purchased non-lithium ion rechargeable batteries which ended up not being compatible with my Xbox controller.These batteries worked great in the Xbox controller and I love how easy it is to charge them without having a special adapter.One thing to be aware of with lithium ion batteries is because they are so good at holding the same voltage, most if the time you won't get a low a battery warning and they will just instantly stop working.I graded a star down at four stars because the first one purchased had one battery that didn't work. Luckily, they sent a replacement set out so I'm still a happy consumer and would purchase again.

You don't need a bulky charger. It comes with one, and is very compact. Easy to keep in the drawer with the electronic remote controls. Rechargeable batteries have a normal capacity.

The product title says you can recharge these 1000x. For me it was 1x. I was able to recharge these batteries one time and then they would not charge up again. I bought a 4 pack. Every single one is dead. I tried different adapters and cords to try to charge them and nothing worked.

I used these batteries in my Oculus/Meta Quest 2 controller so I don't have to remove the batteries to charge them while they sit in the Kiwi Design Extending Grips that are on them. The battery life is stellar as I only need to charge them once a month so I don't constantly use them in the quest for more than half an hour to an hour 3 to 4 times a week. The charging time takes maybe an hour so they are ready to use again in a very short time.

As with most lithium AA's, these don't hold anything near their rated capacity. As far a the difference between the advertised capacity and their actual capacity, these are about the worst I have come across out of more than 11 different brands.With that said, they do hold the most mWh/mAh of any rechargeable lithium AA WITH a USB charging port for the money that I have tried out of 4 brands. AmpTorrent makes a AA with a USB charging port that is $27 for 4, but only delivers about an extra 300-450mWh/200-300mAh (2550mWh/1700mAh total), NOT their advertised 3000mWh.The ANVOW's are good for a wireless mouse because they have a USB-C charging port, meaning you don't need to carry around a charger with you to use them in a wireless device for your computer. They also output a constant 1.5v AND constant AMPS! Some do not, like EBL's 3300mWh AA's with the USB charging port. The EBL's do deliver a constant 1.5v, but the amps drop as they lose power. This defeats the primary benefit of lithium rechargeable batteries, which is that they deliver constant "power" as they discharge. But "power' isn't just volts; it's watts. Think light bulbs. Amps x Volts = Watts. And if your watts drop, then a device attached to them such as a battery-powered light will dim just like an ordinary $0.25 disposable alkaline battery. So what's the point if the voltage remains the same, but the amps and watts drops? So these do pass that test. The price is good for what you get. And they do recharge in less than 2 hours which is nice, but almost all lithium AA's do, or faster.Over the last 11 months, they do not appear to have lost much, if any capacity. They just never delivered anything close to what they advertise. They also have a pretty low self-discharge rate. I have used one in a mouse or TV remote control for over 3 months before having to recharge it.So basically, they're not the worst lithium rechargeable I have come across for the money, they just don't deliver what they advertise. But I haven't come across any that do unless they don't deliver constant volts AND amps (watts). And if you use them in a TV remote control, even though you can't see the IR light waves coming from the remote, they are significantly brighter. You can point a remote control almost anywhere in the room and it will work. And as with all almost all rechargeable lithium AA's, they also have a chip that turns them off when they can no longer produce 1.5v so they either work, or they don't. No more wondering if your batteries are dying. If your remote control or mouse just stops working, the batteries are dead. No more guesswork. But I would not use them on a device that you need advance notice that your batteries will die. Such as the radio control for a drone.