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A battery.
The chemical energy of the battery in your toothbrush is turned into radiant energy (heat), and kinetic energy (movement).
A cordless toothbrush, a battery operated electric clock and an electric flash light could be in this group of house hold items.
Yes, the Sonicare toothbrush has a battery inside.
The best way to change the battery on a Braun electric toothbrush is to simply remove the current in place battery by removing the rear cover via the clip at the base of the toothbrush. Obviously different models have this clip in different places. Once the old battery has been removed the new battery can be easily clipped into the toothbrush.
In any electric toothbrush there is an electric motor and a battery inside the handle. When you use the on/off switch to connect the motor to the battery, the motor spins very fast and drives some gears which turn the brush head backwards and forwards to clean your teeth. Some electric toothbrushes have replaceable batteries which means that, when the battery runs down so that the motor won't run, you have to take out the old battery and put in a new one. If the toothbrush is the kind that is rechargeable, it has a battery which does not have to be removed and replaced by a new one. Instead, you place the handle onto a charger unit and when that is plugged into a home ac power socket it re-charges the battery.
When using a rechargeable electric toothbrush, it isn't necessary to press hard or scrub. Simply guide the brush while it provides the brushing action. In fact, some electric toothbrushes have pressure sensors that alert you when you're brushing too hard.
According to the operators manual: "Because the power handle is a sealed unit for protection from moisture, and for infection control and protection of the patient and our employees, the power handle is not repairable and the battery may not be replaced" http://healthygumsandteethnow.com/services/rotadent-step-electric-toothbrush/rotadent-step-electric-toothbrush-faq/
get a battery operated toothbrush
The chemical energy is initially converted to electrical energy. This electrical energy works its way through a motor and is converted to mechanical energy.
you opperate it by the controller on the electric battery you opperate it by the controller on the electric battery
You have to take out the battery and recharge it or replace it.