USB Rechargeable AA Batteries, Rechargeable Batteries - Cell 1.2V / 1000mAH - High-Capacity Batteries Long-Lasting Power Recyclable Recharge Battery-（4 Count）

I was a bit skeptical when I ordered these but I'm always up to check out new ideas and technology. That said this is a pretty cool concept and very useful alternative to having a larger charging unit.PROS:This is a GREAT option for when you are traveling and want to keep everything light...especially if going to another country because the standard charger would need a converter. With these batteries all you need is the TWO port charging wire (it seems they changed from a 4 port wire at some point) and you can charge anywhere that has a USB port. No need for a larger charging unit AND the converter to go with it. So for me I know these will be going everywhere I go when I travel.CONS:That 2 port charging wire. Why they cut down from the 4 port I don't know but that could be a significant game changer for some. But the photos in the actual description show 2 ports so you know what you are getting.Also, I seeing as I could only charge 2 at once with the wire, I put the other 2 in my regular charger. I'd say the wired option took about 30% longer to charge. That was only maybe 20 minutes but for anyone in a massive hurry it might be a game changer. For me, it's not a big deal.Other than that this is a useful alternative to having a charging unit. If I have any other experiences with this I'll be back to update but right now, I'm impressed and these will definitely be accompanying me when I travel as well as being useful for everyday use at home.

These work great. We use them in our wireless switch controller. Lasts as long as I would expect them too and you can just plug em in when they get low. Great product!

They Charge fast and last pretty long. However there are A few things that could be more user-friendly such as:- they are difficult to plug-in because of the angle even if you’re careful it takes a little bit longer than it should to get them plugged in correctly without messing up the connection in the plug which tends to be frustrating at the time you’re done-The plug-in cord is a great idea and I like it but ,they can be a little bit longer ...like twice as long would be great! if you have them plugged into the wall, they dangle there unless you have something underneath it ,which as everyone knows ,can ruin the connectors inside and leave your device or whatever unable to charge- they were a bit more than I wanted to pay for 4 rechargeable batteries but I figured wtf try them out. Next time I will try the ones with the flip top lid / usb plugin

I love these batteries as I use my mouse heavily daily and need constant batteries. Now I have changed batteries to change daily. Excellent.

They're very convenient to be able to use my phone charger to charge up the batteries whenever they die. The battery life isn't the best per a charge, but it's so easy to just need one charger to charge my phone and batteries. I've been using these with my Oculus GO and they last for about 3-5 days on moderate use.

Great product for the price

The batteries can be used at the same time with just one cable. Now I can change between and recharge with the Power Bank.I have a lot of batteries at home and yet I'm very surprised what's new on the market. That the look looks cool plays here probably rather an unimportant role, but that's the way it is. Why is it practical? Quite simply, you can always charge two batteries at the same time on your laptop or mobile phone cable. If you have an adapter, you can even charge all four batteries at the same time. Ideal for my torch and night lamp. You do not need any additional adapters or chargers but can make it quite relaxed on the USB port.

These are a great concept! They work exactly like they look like they will. They have good power output, but unfortunately only for a short while. Good for low power devices, or perhaps if your kid likes the ritual of recharging batteries. I found plugging in the microusb a little fiddly and set at a surprising angle, so young children may struggle to recharge them on their own. Charging and complete indicator lights are helpful.