How can I replace the Batteries in this?
Oral B Tri Zone 600/700/800
How can i replace the Batteries in this? It now needs recharging after about 3 days. Is it easy to do?
The basic method is:
Desolder old battery and other connections from PCB
Remove charging coil, pressure warning light, pressure switch, PCB and battery
Reassemble PCB and other parts
Solder in connections for parts and new battery