The broken battery is expanded in a few minutes, all thoroughly cleaned and then I started with the installation of the new battery. Adjusting the solder tail to the negative pole was not a problem and went easily with small cutters. The positive pole was unfortunately at least 1 cm too short and I had to solder the solder tail of old batteries - unfortunately was a complete botch because must be yes then threaded through the board. Not Dassollte when a replacement battery for exactly this toothbrush OFFERED. Since 2 months everything has kept and the service life is much longer than the originals.
