The replacement battery from the new production is precisely compatible with the original battery. 840mAh Li-Ion Sanyo replacement battery for Braun Oral B 3765, 3771, Genius, Smart iBrush. Sanyo UR14500 replacement battery 840mAh 3.6V 14x50mm. Type 3765/3771: Smart 6, Genius 6000, Genius 8000, Genius 9000, iBrush 8000, iBrush 9000, Smart 6000, Smart 7000, Genius X.

Please note that the original Sanyo battery is no longer produced, as Sanyo was acquired by Panasonic about 10 years ago. Be sure to compare the technical specifications and dimensions with the images and your original battery to ensure compatibility.

Technical specifications (not an original Philips/Sanyo battery):
Chemical system: Lithium-Ion battery (Li-Ion battery)
Voltage: 3.7 volts
Capacity: typical min. 680mAh, typical 715mAh
Dimensions: approx. 50x14mm
Weight: 22 grams

*Safety notice*: Please note that lithium cells may only be handled by authorized professionals. Improper handling or short circuits can lead to fire or explosion. By purchasing, you confirm that you will use our cells exclusively in a professional manner. This includes proper handling and processing of the cells as well as proper storage. We accept no liability for damage to persons or property resulting from improper use or unauthorized use of the cell.