The lithium coin CR2032 battery from Varta has a high voltage of 3V and that means a lot of power in an ultra-compact design.
4pcs Maxell ML2032 Rechargeable CR2032 Lithium LMO Coin Cell Battery - 3V 65mAh
2 x Varta CR2450 High Quality Lithium Button Coin Cell 3V Battery (6450, DL2450)
Panasonic CR2032 Bulk Trade Pack 20 / 40 / 60 / 80 / 100 Coin Cell 3v Batteries
Energizer CR2032 CR2016 CR2025 Lithium Battery Coin Cell Long Expiry Batteries
Eunicell CR2032 CR2016 CR2025 Lithium Battery Coin Cell Long Expiry Batteries
Panasonic VL2330 3V Rechargeable Lithium Battery Coin Cell Brand New