Nick Pro
Comentado en los Estados Unidos el 26 de marzo de 2025
Good to have around
My son
Comentado en los Estados Unidos el 13 de febrero de 2025
Good
Professor Science
Comentado en los Estados Unidos el 26 de enero de 2025
These work great so far.
Gregory A. Corson
Comentado en los Estados Unidos el 8 de octubre de 2024
It's tricky to review rechargeable batteries, this is because they all work pretty much fine when you get them, the important thing is how long they last. I have had some that are still going strong after dozens of cycles but one or two that died after just a couple. You have to use batteries for as long as a year to find this out, so for this review I'll focus on the stuff I notice right away.First of all, these charge with USB-C, not sure why the description says Micro-USB as you can clearly see in the product pictures that they use USB-C. This is good because USB-C cables are easier to find, can be inserted either way around and are less likely to break. You can charge all 4 batteries at once with the 4-way cable they provide, or just use whatever USB-C cables you have handy. Charging these on the go is much easier because you don't have to carry a charger with you.The other thing that is different about Lithium batteries is that they deliver a constant 1.5 volts right up to the point where they are "empty" then they just shut off. This means that the "battery meter" on most devices or even a battery tester won't give you any idea of how much charge they have left. So if you are putting these in critical devices, remember to keep them charged. Your device will work perfectly right up to the point where the batteries are empty, then your device will shut down with no warning. This does mean that these batteries are good for picky devices that only work well on "fresh" batteries, since these batteries give you 1.5 volts all the time.It can also be confusing that these batteries are rated in mWh (miliwatt hours) rather than mAh (miliamp hours) as many others do. This means that these 3050mwh batteries are roughly equivalent to a 2000mah NiMH rechargeable battery, so these have less capacity but make up for it by delivering full voltage for the whole charge.In any case, the batteries work well in my devices and are easy to charge, so I think I can recommend them. If any problems crop up in the future after a few dozen cycles I'll update this review.
tintoo "dot" net
Comentado en los Estados Unidos el 21 de octubre de 2024
caveat is that there is no way for me to test the alleged capacity.i charged all 4 batteries via the integrated usb c port. 1 of them charged and holds solid 1.51 volts. the other 3 charged to 1.58 volts and when measured with a multi meter bounce around from 1.56 to 1.58 volts. i installed one of these weird batteries in my usb mouse. some of my used rechargeable batteries do not last very long, and a regular alkaline battery is supposed to last months, even a year.so it's been several weeks, and the battery is still holding strong, and the multi meter reads 1.35 to 1.45 volts.extra note: the battery is ever so slightly larger than a regular AA battery, making it a tight fit in my logitech mouse.as i write this, i have to think 3000mwh must be exaggerated greatly, as there are 18650 batteries (much larger) that do not have this capacity. my other used aa rechargeables are at like 900mah after heavy use.