2 Pack 18650 Rechargeable Battery 3.7v Batteries 18650 Rechargeable Battery Lithium 3.7 Volt Button Top for Flashlights, Headlamp etc

This battery works perfectly for Eufy battery camera model TB222 that eufy states is throw away product and will not sell you a replacement battery. This battery offers 2x maH than the battery supplied with Eufy Doorbell Camera and comes in a 2 pack which I highly recommend

I was a bit skeptical... but these are awesome! Long life in my daily carry flashlight i use it almost everyday and am now looking at using them in other things Im relying on.I'd say it's a very solid battery!

Works well

So far so good

Quick charge, good illumination in my weapon lights.

More charge than the previous oneAlso the previous one lasted several years and I expect the new one will do too

Why did you pick this product vs others?:I bought these as backup batteries for my UltrAspire waist belt. I'm a long-distance trail runner which sometimes involves running through the night (or several) and I want a battery that will last though the night. These batteries are advertised as 9900 mAh. Well, then, please explain why they last less than 4 hours on the lamp's medium setting, when my "only" 3400 mAh OEM battery lasts 12 hours. Returning these and buying more OEM. More expensive, but I won't have to carry 3x the batteries and swap out twice on a dark trail. If you're an occasional or short-term user, these batteries might work for you. Not for me.

Little slow arriving but took charge well and seem to have great power