Video: Apparently, you can upgrade the battery in your BMW i3
BMW i3 gets a 100 kWh battery pack for 435 miles of range as a proof-of-concept by Lion Smart | Electrek
Remember That High-Mileage Electric Car I Bought With A Bad Battery? I Just Got Its Pack Replaced For Free. Here's A First Look At Its Overall Condition - The Autopian
BMW i3 60Ah Battery Pack Disassembly - YouTube
BMW i3 60Ah Battery Pack Module Closeup - YouTube
2019 BMW i3 to get bigger battery with 153-mile range
BMW Is Developing New Batteries, the i3 Will Have Longer Range Starting with 2016 - autoevolution