![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.
![Charging protocols for lithium-ion batteries and their impact on cycle life—An experimental study with different 18650 high-power cells - ScienceDirect Charging protocols for lithium-ion batteries and their impact on cycle life—An experimental study with different 18650 high-power cells - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2352152X16300147-fx1.jpg)
Charging protocols for lithium-ion batteries and their impact on cycle life—An experimental study with different 18650 high-power cells - ScienceDirect
![Amazon.com: 18650 Battery Charger 4-Bay 5V 2A for Rechargeable Batteries 3.7V Li-ion TR IMR 18650 14500 16340(RCR123) Red/Green Display (Not Battery) : Electronics Amazon.com: 18650 Battery Charger 4-Bay 5V 2A for Rechargeable Batteries 3.7V Li-ion TR IMR 18650 14500 16340(RCR123) Red/Green Display (Not Battery) : Electronics](https://m.media-amazon.com/images/I/71u8VZ0TVcL.jpg)
Amazon.com: 18650 Battery Charger 4-Bay 5V 2A for Rechargeable Batteries 3.7V Li-ion TR IMR 18650 14500 16340(RCR123) Red/Green Display (Not Battery) : Electronics
![BYDOT 18650 Battery Power Bank Case Storage Box 12V-24V 16V-24V USB Port Mobile Phone Charger Battery Holder Charging Box - Walmart.com BYDOT 18650 Battery Power Bank Case Storage Box 12V-24V 16V-24V USB Port Mobile Phone Charger Battery Holder Charging Box - Walmart.com](https://i5.walmartimages.com/asr/c8bac8a7-a05b-42b8-ae31-dafbaa3d223e.13320ba09ef11677738e47b8ad20e977.jpeg)
BYDOT 18650 Battery Power Bank Case Storage Box 12V-24V 16V-24V USB Port Mobile Phone Charger Battery Holder Charging Box - Walmart.com
![Batteries | Free Full-Text | Non-Uniform Circumferential Expansion of Cylindrical Li-Ion Cells—The Potato Effect Batteries | Free Full-Text | Non-Uniform Circumferential Expansion of Cylindrical Li-Ion Cells—The Potato Effect](https://www.mdpi.com/batteries/batteries-07-00061/article_deploy/html/images/batteries-07-00061-g001.png)