Video: Apparently, you can upgrade the battery in your BMW i3
BMW unveils i3 battery upgrade for 'over 160 miles' (260 km) of range | Electrek
BMW i3 gets a 100 kWh battery pack for 435 miles of range as a proof-of-concept by Lion Smart | Electrek
BMW i3 Base Audio Upgrade - Audiokit
BMW i3 Base Audio Upgrade - Audiokit
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
EV grin:" BMW i3 owner says battery still great after 134,000km, and minimal fuel cost