Sonicare Elite 7300 - Battery Replacement

Step 2 Remove Battery

On the PCB there are two solder points which hold the battery in place (red arrows). Use some de-soldering braid and a soldering iron to free the legs holding in the battery and which also provide the electrical contact between the battery and PCB.

Comments

[thue]

I went through the process and the unit shows it is now charging but it's not showing that a charge is building, it's dead when I take it out of the base. I put in a new nimh battery which may have been on the shelf for who knows how long, got it from Interstate. I am contemplating ordering one over the Internet and trying again. Any ideas out there?

[waynesl]

I don't pretend to know a lot about the various Sonicare models, but my HX7800 has a NiCd cell, not NiMH.  If your 7300 is designed for a different cell chemistry, that could be the problem.