![battery charging - Fake nominal capacity of 18650 batteries? - Electrical Engineering Stack Exchange battery charging - Fake nominal capacity of 18650 batteries? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/6V5R2.jpg)
battery charging - Fake nominal capacity of 18650 batteries? - Electrical Engineering Stack Exchange
![Found this fake 18650 picture elsewhere on reddit, figured I'd cross post here for awareness : r/electronic_cigarette Found this fake 18650 picture elsewhere on reddit, figured I'd cross post here for awareness : r/electronic_cigarette](https://i.imgur.com/beGzXbh.jpg)
Found this fake 18650 picture elsewhere on reddit, figured I'd cross post here for awareness : r/electronic_cigarette
![I have 2 18650 batteries. This one has this orange/brown stuff on top while the other one is fine. What is it and Is this battery safe to use? : r/ batteries I have 2 18650 batteries. This one has this orange/brown stuff on top while the other one is fine. What is it and Is this battery safe to use? : r/ batteries](https://external-preview.redd.it/bHfs5wCJJJF11NnfmOfi_P1b5Qkk6jRbeKLmiB2xR_8.jpg?auto=webp&s=66977a9444c79984bf4492de6bbfa21e7726c254)
I have 2 18650 batteries. This one has this orange/brown stuff on top while the other one is fine. What is it and Is this battery safe to use? : r/ batteries
![Vapcell original never fake 18650 battery 2600 mAh 10A 3.7V rechargeable li-ion battery M26 18650 batteries flat / button top - AliExpress Vapcell original never fake 18650 battery 2600 mAh 10A 3.7V rechargeable li-ion battery M26 18650 batteries flat / button top - AliExpress](https://ae01.alicdn.com/kf/Hdb15add33f6d4730a93c5ad1fde33a09I.jpg_640x640Q90.jpg_.webp)