Repair a Swagtron Swagger 5 (Xiaomi M365) Electric Scooter battery: Soldering tips for 18650 battery

In this video, I will show you how to repair a Swagtron Swagger 5 battery pack. All electric scooters of this size virtually have the exact same size battery pack: Xiaomi M365, Lime, Bird. The Swagger 5 is especially similar (if not the exact same) with the Xaiomi M365. This battery issue is an extremely common problem with all electric scooters. I will also show you some tips to solder 18650 cells with a nickel strip. The same process can be done on an electric bike battery.