Panasonic VL2020 3V Rechargeable Lithium Coin Cell Battery | Mini Cooper Remote Key Fob | 180° Tabs | 1 Pack

• Battery Type: Rechargeable lithium coin cell battery employing vanadium pentoxide cathode, lithium alloy anode, and non-aqueous solvents in the electrolyte solution
• Nominal Voltage: 3.0 V
• Charging Voltage: 3.25 V to 3.55 V
• Capacity: 20.0 mAh (nominal); continuous drain 0.07 mA
• Chemistry: Lithium Vanadium Pentoxide (Li/V₂O₅)
• Rechargeable: Yes — charges via car ignition circuit while driving
• Cycle Life: Up to 1,000 charge/discharge cycles at 10% discharge to nominal capacity
• Dimensions: 20.0 mm diameter × 2.0 mm height
• Weight: Approximately 2.10 g
• Self-Discharge Rate: Approximately 2% per year — low enough for use without recharging after long storage
• Shelf Life: Up to 5 years
• Operating Temperature: –20°C to +60°C
• Terminal Configuration: 180° solder tabs — requires professional soldering for installation; battery must be desoldered from PCB and new unit soldered in place
• Pack Size: 1 battery
• Mini Cooper Compatibility: Mini R56 (2006–2013), Mini Cabrio R57 (2008–2015), Mini Clubman R55 (2007–2014), Mini Countryman R60 (2010–2016), Mini Coupé R58 (2011–2015), Mini Paceman R61 (2012–2016)
• Typical Uses: Memory backup for PCs, AV equipment, and hybrid systems with solar batteries; remote control key fobs; office automation equipment