JESSPOW 2 Pack 14500 Battery 3.7V Rechargeable Batteries, 800mAh 14500 Rechargeable Batteries 3.7V Battery for Flashlight, Toys etc.

Perfect for my Oral-B IO!

Product arrived on time and with about an 80% charge ready to go. Worked for my 14500 specific battery need inside a toothbrush. Would recommend.

The battery works good but is nowhere near 800mAh. My chargers are getting to 321mAh of charge.

These are the same size as a regular AA battery but more than twice the voltage. Make sure they are not laying around for others to use where they might be installed as a regular battery.I used this in my Coast flashlight that is designed for AA or lithium batteries. Works well and is much brighter.

Works great in my torch lights

Battery casing split open after a few minutes of use in a flashlight...Update: It wasn't the fault of the battery, it was the flashlight I was using that was getting so hot it causing the plastic casing to shrink. The same thing happened to a different brand of battery...

From the description, I thought that these were standard AA batteries, but they are noticeably not. These will not fit in the same battery compartment that a normal AA battery would fit in. As such, I'm unable to determine if they actually work. They should not be listed as AA batteries.

Both tested at 900+ mAh which is well over posted rating. BUT, one showed an internal resistance of 176 and the other a whopping mR of 320. These numbers should be under 100, so "should" indicate batteries that are at the end of their useful life. I've heard stories of batteries that test at their rated mAh but are actually used ones removed from service. We'll see how things go, but definitely conflicting results for brand new batteries.