Help Please Electric Toothbrush

[Peter O]

My rechrgeable "Braun" electric toothbrush has finally given up.
It will not hold a sufficient charge to manage even a quick tooth clean.
Bummer................ I had got used to the idea it would last forever.
To be fair, for a price equivalent of US$15, it has been a spectacular
demonstration of the best in modern technology, lasted about 3 or 4 years.

So I thought ........... lets power this with a Wallwort & dispense with the
Ni-Cd rechargeable.
Well my 3.6vdc/0.15amp wallwort drives the motor (alone) but will not power
up the brush when assembled.
I have a 5vdc power unit with 10amp capacity & this really powers up the
brush but I doubt the unit would last long at this voltage.

My question: what would the Ni-Cd rechargeable be capable of delivering, I
thought about 3vdc at maybe 0.25 amps but that's a straight guess.
If I can find or buy a wallwort with about the same capacity I can get on
with this little project.
BTW the Ni-Cd battery is a Panasonic unit with no ID or volt marks, which
looks as thought its really two units in series.

I'd appreciate a little help from those of you who "know things".
Thanks

Pete

 

[Sam Goldwasser]

My rechrgeable "Braun" electric toothbrush has finally given up.
It will not hold a sufficient charge to manage even a quick tooth clean.
Bummer................ I had got used to the idea it would last forever.
To be fair, for a price equivalent of US$15, it has been a spectacular
demonstration of the best in modern technology, lasted about 3 or 4 years.

So I thought ........... lets power this with a Wallwort & dispense with the
Ni-Cd rechargeable.
Well my 3.6vdc/0.15amp wallwort drives the motor (alone) but will not power
up the brush when assembled.
I have a 5vdc power unit with 10amp capacity & this really powers up the
brush but I doubt the unit would last long at this voltage.

My question: what would the Ni-Cd rechargeable be capable of delivering, I
thought about 3vdc at maybe 0.25 amps but that's a straight guess.
If I can find or buy a wallwort with about the same capacity I can get on
with this little project.
BTW the Ni-Cd battery is a Panasonic unit with no ID or volt marks, which
looks as thought its really two units in series.

I'd appreciate a little help from those of you who "know things".
Thanks

NiCds can easily supply AMPs so you'll really have to measure the
current drawn by the motor at about 2.4 V. Put enough high power low
ohms resistors or diodes in series with the 5 V to get 2.4 V and measure
the current under load.

You could also replace the dead cells.

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[Jerry G.]

They way it is designed, you need to replace the battery (cells). It
will probably be cheaper to replace the unit. This is a very low cost
device.

--

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My rechrgeable "Braun" electric toothbrush has finally given up.
It will not hold a sufficient charge to manage even a quick tooth clean.
Bummer................ I had got used to the idea it would last forever.
To be fair, for a price equivalent of US$15, it has been a spectacular
demonstration of the best in modern technology, lasted about 3 or 4
years.

So I thought ........... lets power this with a Wallwort & dispense with
the
Ni-Cd rechargeable.
Well my 3.6vdc/0.15amp wallwort drives the motor (alone) but will not
power
up the brush when assembled.
I have a 5vdc power unit with 10amp capacity & this really powers up the
brush but I doubt the unit would last long at this voltage.

My question: what would the Ni-Cd rechargeable be capable of delivering,
I
thought about 3vdc at maybe 0.25 amps but that's a straight guess.
If I can find or buy a wallwort with about the same capacity I can get
on
with this little project.
BTW the Ni-Cd battery is a Panasonic unit with no ID or volt marks,
which
looks as thought its really two units in series.

I'd appreciate a little help from those of you who "know things".
Thanks

Pete

 

[Jim Adney]

My rechrgeable "Braun" electric toothbrush has finally given up.
It will not hold a sufficient charge to manage even a quick tooth clean.
Bummer................ I had got used to the idea it would last forever.

Why not just replace the dead cells. Even if they are soldered in they
are rather easy to replace. There are small appliance repair shops in
most cities who can do this, and even some battery shops can, too.

-

 

[Dave D]

My rechrgeable "Braun" electric toothbrush has finally given up.
It will not hold a sufficient charge to manage even a quick tooth clean.
Bummer................ I had got used to the idea it would last forever.
To be fair, for a price equivalent of US$15, it has been a spectacular
demonstration of the best in modern technology, lasted about 3 or 4 years.

So I thought ........... lets power this with a Wallwort & dispense with the
Ni-Cd rechargeable.
Well my 3.6vdc/0.15amp wallwort drives the motor (alone) but will not power
up the brush when assembled.
I have a 5vdc power unit with 10amp capacity & this really powers up the
brush but I doubt the unit would last long at this voltage.

My question: what would the Ni-Cd rechargeable be capable of delivering, I
thought about 3vdc at maybe 0.25 amps but that's a straight guess.
If I can find or buy a wallwort with about the same capacity I can get on
with this little project.
BTW the Ni-Cd battery is a Panasonic unit with no ID or volt marks, which
looks as thought its really two units in series.

I'd appreciate a little help from those of you who "know things".
Thanks

Pete

Time to buy a new one. Replacing cells in items as cheap as these is pretty
pointless, especially as there is likely considerable wear on the mechanical
parts by now. If you were to get it re-celled professionally, it would cost
you more in parts and labour than a new one.

Dave

 

[kc8adu]

find out what type cells they are and replace them.
easy job.
many online sellers of cells cheap.
www.batterystation.com
is a honest and reliable source.
they are likely nicads or nimh.