General description vhbw offers high-quality, compatible batteries designed for use in various BMW electronic vehicle key fobs. These batteries are engineered to provide reliable performance and can be charged with standard or compatible chargers. Each package includes two batteries to ensure you have a backup on hand. Technical specifications Battery type: Li-Ion Capacity: 20 mAh Voltage: 3.6 V Energy: 0.07 Wh Height: approx. 0.2 mm Weight: 2 g Construction: for soldering Type: LIR2025, VL2020 Diameter: 2 cm Compatibility and accessories Compatible with BMW 8 Series E31 BMW E38 BMW X3 BMW 7 Series E38 BMW E46 BMW E39 BMW M5 BMW M3 Replacement for LIR2025, VL2020, VL2025