![Purchased 18650 battery for first time. Seller told me it's Panasonic 3400mAh capacity. I am getting some doubts about it being fake because original one has different top side on the internet. Purchased 18650 battery for first time. Seller told me it's Panasonic 3400mAh capacity. I am getting some doubts about it being fake because original one has different top side on the internet.](https://preview.redd.it/v8f7cih6ysv71.jpg?width=640&crop=smart&auto=webp&s=99a3079b7e810044a3a85358fc075a176213b7a1)
Purchased 18650 battery for first time. Seller told me it's Panasonic 3400mAh capacity. I am getting some doubts about it being fake because original one has different top side on the internet.
fake VS original Panasonic 26650A 3.7V 5000Mah 50A Lithium ion Rechargeable Battery High Drain Li-ion for LED Flashlight | Shopee Malaysia
![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
![Energies | Free Full-Text | The Distribution and Detection Issues of Counterfeit Lithium-Ion Batteries Energies | Free Full-Text | The Distribution and Detection Issues of Counterfeit Lithium-Ion Batteries](https://www.mdpi.com/energies/energies-15-03798/article_deploy/html/images/energies-15-03798-g004.png)