Repair guides and support for battery-powered toothbrushes.

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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?

Thanks :)

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Thanks i will need to practice with a Soldering Iron first lol.

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The basic method is:

Dismantle handle

Desolder old battery and other connections from PCB

Remove charging coil, pressure warning light, pressure switch, PCB and battery

Replace battery

Reassemble PCB and other parts

Solder in connections for parts and new battery

Reassemble handle

http://toothbrushbattery.com/guides/brau...

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Anthony will be eternally grateful.
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