Svenirven 14500 Battery, 2 Pack 800mAh AA Size Rechargeable Lithium Battery Pack 14500/800mAh/3.7V

This is a surprisingly hard to find battery in this size (AA). There is another 14500 battery that is physically much larger than this one so be careful.

If you can manage the difficulty of opening the Oral-B IO toothbrush, this battery works as a perfect replacement. It’s not exactly the same as the original in that it drains quickly at the end of the charge cycle so you get little or no warning that the battery is low. But I’m very satisfied. I was able to revive a very expensive toothbrush. If you store your toothbrush on the charger, you would never know the difference.

Awful. I bought these to replace the battery for my orals io toothbrush. One battery had a 15% capacity and the other one had less than 20% capacity.. don’t buy this.

Put these batteries in a flashlight that is rated for these batteries.Lights up my whole yard. Very powerful. I no longer use standard batteries of 1.5 volts. These are over 3 volts. But, beware, these must be used in a flashlight that is rated for the higher voltage battery. If you want more light from a flashlight, these are great.

Worked perfectly to replace the dead battery in my Braun S5 shaver.

Working good may order more.

I purchased two of these blue 14500 Li-ion batteries. They are labeled as providing 800mAh. I ran a capacity test four times on each battery. The average capacity for these two batteries is 905mAh per cell. This is 13% above the advertized capacity. This is pretty good in my book.In the past I have bought other 14500 Li-ion batteries from Amazon that advertized 2500mAh capacity. They were only capable of storing about 450mAh. So when I get a Li-ion battery that exceeds the stated capacity I am excited. I would recommend these blue 800mAh 14500 batteries. When I need more 14500 batteries I am going to purchase these again.

I’m pretty sure they don’t last as long as the factory battery’s I had for my nebo flashlight but they are definitely cheaper