14500 Battery 3.7V Li-ion Rechargeable Battery, 2500mAh 14500 Rechargeable Battery 3.7V Battery for Flashlight, Toys (4 Pack, Purple)

The media could not be loaded. I got these for use in the X Trans-Bots Dr Egg Quintesson Judge. This battery type is what was recommended. From my understanding, this battery is designed to be used in a device that has an internal charger. Using batteries not designed for this had resulted in the toy exploding. I haven't had to test the charging yet because a single battery out of the 4 has lasted over 2 months. I can't give an accurate review on so many of the outstanding features of the battery. All I can say is it's NOT a typical AA 1.5v battery. Do not purchase this if all you need is a typical AA 1.5v battery. Using this battery in a device requiring the typical AA could result in damage to that device.I can't give an example of where this battery would be used. I suggest verifying the specific requirements for individual devices. If the device requires the increased voltage present in this battery, I can't find any reason not to recommend it. I want it known that any use beyond that of it's specific design or it's intended use is solely the responsibility of the individual. My recommendation is based on the use I've personally experienced & is not meant to be taken as a universal recommendation.Photo/video are of my specific use.Thank you.

Used to replace the batteries in my 12 year old lightsaber. Excellent.

Worked great for the price. 3 out of the 4 batteries showed up in proper storage voltage and one was below chargeable voltage. Thankfully I only needed 3, but for the price I was kinda expecting it.

After receiving the 4 pack of batteries, I replaced two cells in my solar lights and measured their voltage to determine their charge state and put them out in the bright daylight sun to be further charged. The terminal voltage indicated they were at least at 80-85 percent charged before further charging them in the sun for almost a day.A 2500 mAh cell that’s 80 percent charged would be what… 2000 mAh.. but, even if it had only 1000 mAh worth of charge, my run time would be doubled over a charged 500 mAh cell.The next morning they were not lit as I was hoping for. They replaced 500 mAh batteries and the lamps only needed a couple more hours of run time, so a charged 750 mAh cell would probably have worked if it really had that capacity when charged.So, long story short, these cells don’t have any where near their stated capacity, just can’t be.Also of note, I weighed each battery and found that two cells weighed much less than the other two of the 4 pack. So now I’m in the process of charging them up to see if their capacity may be different/better.

Price, performance, and fast shipping. Who could ask for more?

Got a 4 pack and 2 Flashlights. Difference in brightness is noticable for sure. Light enough to carry extras if needed in my backpack. Not sure I got the best charger, but does the job.

I bought this to replace the i o 6 Oral B battery. Out of the 4 batteries, 1 was dead.

Excelente batería, y de buena duración en mi linterna táctica