4-Piece 450mAh Micro-USB AAA Ni-MH Rechargeable Battery with 2 in 1 Charging Cable, Orange

I purchased the rechargeable AAA batteries to use in my noise-cancelling headphones on a very long plane flight. When I boarded the aircraft, I put a battery into my headphones, and discovered two things - 1) they did not come pre-charged, as it was suggested, and 2) the batteries are slightly thicker than normal rechargeable AAAs. This second one is extremely important because the battery slot in my headphones is designed to fit normal rechargeable AAAs...and as a result of these being thicker, the battery went in, but when I discovered it had no charge, it would NOT come back out. No matter how much I shook or pulled, I could not get the battery to budge. This left me without my headphones on an 8-hour flight, and my have made it so I cannot use my headphones ($150 high-end headphones) ever again.The charging port itself is, in contrast, designed to be very snug, and it was extremely difficult to plug it in properly. I could certainly see how, over time, this port would likely become damaged and either stop functioning, or damage the battery itself.The convenience factor doesn't come anywhere close to making up for the damage these batteries can and have caused. Purchase at your own risk!!

I bought a a AA and AAA pack, the AA pack 2 of them will not charge and the manufacture will not respond with I asked to have them replaced. The AAA pack is great, charge easily and work very well.

We bought these hoping we would be able to use for a while but in all honesty they didn't even last half a year. These worked a maybe a couple of months but after they would charge fully and would die soon after they were fully charged. Overall not recommended but maybe we got faulty sets?.

It recharges fine and lasts if you charge it right. But the connection is tight and it must be wiggled in at the right angle to begin charging. Otherwise, it will indicate that it is already full.

I got two packs of used them. But on one pack only three will recharge.

Won't charge or fit devices. Batteries are shorter than standard AAA, such that tabs don't contact. Do not buy!!!

Amazing battery, Five Star Product Quality with Five Star Customer Service

It was a good idea because of the usb concept at the start but overtime it barely holds its charge.