18350 3.7V 900mAh Rechargeable Battery with Button top Battery 2 Pack

I received a pair of these cells and put them thru a CHARGE/REFRESH cycle on my Opus BT-C3100 at 500mA. One cell finished at 966mAh and the other at 958mAh. I consider this a perfect result. Hopefully the cycle life will also meet expectations, and I have no indication they won't.The cells are flat top (as described) and look/feel to be high quality. They were shrink wrapped as a pair and packed in a bubble envelope which amazon tossed in a box to send to me.In a world full of fraudulent cells, it is hard to select which to buy. I've given up trying to buy new 18650s and instead buy top tier used packs to salvage cells. That way I get what I pay for, but that isn't an option for 18350s. You can buy directly from a name brand who puts their name on high quality cells and marks them up 10x. You can order directly from China, wait weeks, and be surprised at what you get. Or you take your best guess on Amazon, pay 2x the direct from China price but get your cells after a couple of days of hoping for the best.If the description of these matches what you need, I hope the cells you get work as well as the ones I received.What's the biggest compliment you can give a li-ion cell on Amazon? "As described."

Rechargeable batteries can be a bit of a gamble, because they are often advertised with way higher capacities than they actually have. (Hint, if it says it has 19900 mAh, it's a lie.) These are cheaper than the same size batteries from a brand that I recognize as good, but they have good reviews and 900mAh is a reasonable capacity claim, so I took a chance. I tested one of the two in my battery charger (which consists of charging the battery, discharging it, and then charging it again, measuring capacity on the discharge and charge) and it tested at slightly above the claimed capacity. The flashlight I bought these for should be arriving today, so I look forward to being able to use these batteries, and when these wear out and I have to replace them, I'll be checking here first.

They're good for the price but they don't last as long as the purple ones.

Great seller would purchase from them again

Eventually stops charging or working on device. Some will work and some won't but eventually they all gave out. They seem to be slightly different size too. Return window is over and left with useless paper weight

Working out well, in Device I placed it in. Competitive pricing was something I already looked for... As well as Consumers reviewing their own purchases.

I have purchased 4 of these over the last year - 1st one that failed after 3 months use - past return policy window

I have a pair of night vision goggles that are very high drain. These are middle range batteries. You pay for what you get. Decent. Shipped and delivered quickly.