MINI, which is part of The BMW Group, responsibly sources raw materials from leading suppliers for battery cell production and has been manufacturing batteries for electric vehicles since 2013. MINI is committed to relentless research and development in the field of battery technology. The current generation of batteries in MINI’s all-electric vehicles reflects this expertise and experience.The ambient temperature, number of cycles, age of the battery (regardless of use), and other factors influence battery life. For your peace of mind, MINI offers a comprehensive battery warranty that also covers against excessive battery capacity loss (if net battery capacity is less than 70% of its original nominal value) – whichever should occur first.