****** - Verified Buyer
4.5
No information of capacity of these batteries included. The included charger charged my first cell to 4.27 which is a little on the high side for lithium chemistry, but with the amount of charge cycles I expect to need out of them I don't forsee an issue with that.Another issue I find is just about all devices that take a coin cell battery do not say if they will handle the higher voltage of a rechargeable with no adverse results. Any battery level indicator will not work either, which is why you really should have the rated capacity so you can calculate when to recharge them without grabbing a DMM and checking them often.Other than that they are as expected so far...but I haven't had time to run them through a cycle yet. I will update this review if I run into any quality issues in the future.EDIT: So after using...either I got all duds or they just aren't that great. I got 2 chargers and 8 batteries. So far I've went through 4 batteries which all lasted under a day in my heart rate monitor (regular coin cells last months) and when removed were showing resting voltage of around 1 volt which is death for lithium. They all charge to random voltages also ranging from 3.95 to 4.25+ I will update review after cycling the final 4 batteries, but as of now none of the cells are usuable for even a long run in a heart rate monitor. I'm leaving 2 stars since they might be useful in some of my random electronics projects laying around, but for anyone without equipment to charge these properly or test them you will have zero use for them.EDIT #2: None of the 8 batteries charge correctly...leaving me to believe it's both chargers that don't work correctly. I've wasted too much time on these already...so I'm done with them but you might get use out of them if you want to rig up your own charger to get them to correct voltage as the included one will not.Garbage do not buy.
