BMW i3 94 Ah (33 kWh) Battery Upgrade May Soon Hit US Market - CleanTechnica
Rolls-Royce Noises, Extra Fuel Capacity, A Bigger Trunk, Suspension Goodies: Behold The Coolest Mods David Can Put On His Currently-Broken BMW i3 - The Autopian
Replacing The Battery Pack On A BMW I3 Costs More Than You Think
Video: Apparently, you can upgrade the battery in your BMW i3
BMW's i3 electric car is getting a bigger battery, 114-mile range - The Verge
BMW extends European i3 battery guarantee to 160,000 km - electrive.com
Confirmed: BMW i3 Will Live On, Get Another Battery Upgrade