Coast AAA USB-C Lithium Ion Rechargeable Batteries, 4-pack

These batteries work very well and the fit size is perfect and they last a good amount of time between charges. I am very pleased with the performance and I would highly recommend coast rechargeable batteries.

So super easy to use and they last like or better than regular alkaline batteries! I also love the fact that you don't have to keep up with some bulky recharging station. Awesome job, once again!

Best rechargeable batteries I have ever seen or used. I'm in the process of changing out my entire stock of AAA batteries and can't wait until Coast gets all common sizes in their line. Very easy to charge, great power output. I have not had these long enough to verify the endurance, but expect great results. Everyone should buy these batteries

I also bought AA batteries - the biggest pack I could. Looks good, using immediately so as yet don't know how long they hold the charge. Super simple to charge, effective. good storage packs (although tbh I will be using all of them almost straight away!).

I can charge 4 batteries at the same time with the 4 headed usbc cable which can be attached to a standard USB port or a usbc, as you are supplied both options. The batteries have a small indicator light to show when fully charged, red for charging, green for charged. this is a very practical design and works great.

solid batteries easy to recharge

These batteries are game changers, individual USB C charging is one of the best ideas I have seen in a long time. No more bulky chargers or old style rechargeable AAA/AA that will not power most devices due to a lower voltage/current limitation on the old style rechargeable. As a A/V Installation Technician I have many tools with regular battery requirements. Multi-meter, network tester, cable toner, signal generator, laser level, flashlights etc...I am now saving a lot in the cost of disposables without impacting my tool use, great job Coast and top notch customer service.

I bought them two weeks ago and they have consistently charged reliably using the included cables I don't know how they will perform in many different types of devices yet but so far they have performed well. As far as reviews saying COAST doesn't stand by their products I say Baloney! Coast has gone above and beyond to make sure all my warranty needs were taken care of quickly for many years (They have always answered the phone as well) They even honored a very low price mistakenly listed in a sale email for a high end flashlight. (the wrong Model # was listed by mistake) They honored the very low price in that sale email, and they consistently stand behind their products

I just received these rechargeable batteries a few days ago , charged them up quickly and put them to use in a headlamp I use daily. They are working great and the light is as bright as any lithium battery I have used in the past. As far as how long the charge will last; time will tell. So far I am very pleased with my purchase.

I have 12 Zithion-X AAA batteries that work great when fully charged. However, they do not hold a charge in storage or installed for more than a month. They are completely drained when I need them. I also have 12 AA batteries that work and store fine. Are my AAA batteries defective, or is this typical?