Umair Gaines
If your Braun electric toothbrush's battery is no longer holding a charge, you may be considering replacing the battery instead of buying a new toothbrush. You can replace the battery in your Braun electric toothbrush, and there are several guides available online to help you do so. However, some people argue that the time and cost involved in replacing the battery may not be worth it, especially considering that electric toothbrushes often go on sale. If you are handy with tools and have some soldering experience, you may find the process more straightforward and cost-effective.
Characteristics and Values Table for Braun Electric Toothbrush Battery Replacement
| Characteristics | Values |
|---|---|
| Difficulty | Some users claim it is an easy process, while others say it is time-consuming and not worth the effort. |
| Tools Required | Small adjustable spanner, soldering iron |
| Battery Type | NiMh, NiCd, or similar chemistry to the original battery |
| Battery Size | AA |
| Battery Capacity | 600mAh (possibly referring to 600 on the battery) |
| Battery Life | Varies depending on the model and usage. Some users report batteries lasting 12-13 years, while others complain about short battery life in newer models. |
| Disassembly Process | Involves twisting the white plastic part of the toothbrush anticlockwise to disengage it from the main body. |
| Reassembly Process | Align the switch on the PCB with the button molding on the outside case and press the parts together firmly. |
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What You'll Learn
Identifying your Braun electric toothbrush model
If you are still unsure, you can visit the Braun website and use the product finder feature to identify your toothbrush model based on its features and appearance. Alternatively, you can contact Braun customer service and provide any relevant details about your toothbrush, and they should be able to assist you in identifying your model.
Another way to identify your Braun electric toothbrush model is by examining its design and features. Observe the toothbrush's shape, size, and color. Look for any printed series numbers on the toothbrush, such as Pro, Smart, or Genius. Compare the duration of the toothbrush's charge, which can range from a few days to over two weeks. Check for unique features like Bluetooth connectivity, pressure sensors, or specific brushing modes.
The best way to identify the model of your Braun toothbrush is by using the "Type" number. This is usually located on the toothbrush handle or packaging. Once you have the "Type" number, you can easily verify the model of your Braun electric toothbrush.
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Opening the toothbrush case
To open the toothbrush case, you will need a small adjustable spanner. Place the spanner around the flat of the white plastic part of the toothbrush and twist it anticlockwise. After twisting about 30 degrees, the white plastic should separate from the main body of the toothbrush.
Once the plastic is removed, the inner mechanism will be exposed. Be careful not to lose the spring at the bottom of the mechanism (inside the copper coil). Set aside the main body and the spring, as you won't need these until you're ready to reassemble the toothbrush.
On one side of the mechanism, you will find the PCB (Printed Circuit Board). The PCB controls the charging of the cell (battery) and drives the motor. It also has a momentary push button near the top. Turn the mechanism over to locate the cell, which is yellow in colour.
Before removing the PCB and the cell, ensure that you know how to realign them properly during reassembly. Take note of the four tabs that hold them in position. Two of the tabs connect to the motor, while the other two connect to the positive and negative sides of the cell.
Now, you can proceed to remove the old battery and replace it with a new one.
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Removing the old battery
To remove the old battery from your Braun electric toothbrush, you will need a small adjustable spanner. Place the spanner around the flat of the white plastic part of the toothbrush and twist it anticlockwise. After twisting about 30 degrees, the white plastic should separate from the main body of the toothbrush. Set aside the main body and the spring, as these will be needed later when reassembling the toothbrush.
Once the white plastic has been removed, the inner mechanism should slide out easily. Be careful not to lose the spring at the bottom of the mechanism, inside the copper coil. On one side of the mechanism is the PCB (Printed Circuit Board), which controls the charging of the cell (battery) and drives the motor. The PCB also has a momentary push button near the top.
To remove the old battery, turn the mechanism over to locate the cell, which is yellow in colour. De-solder the four tabs that hold the PCB and cell in position. Two of the tabs connect to the motor, while the other two connect to the positive and negative sides of the cell. The negative tab on the cell needs to be bent upwards to enable the PCB to be removed. Once this is done, the PCB can be lifted away, and the cell can be slid out of the body of the mechanism.
Please note that attempting to replace the battery in your electric toothbrush may void the warranty, and there is a risk of electric shock if it is not done properly. Always exercise caution and consult a professional if you are unsure about the process.
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Soldering and de-soldering
De-soldering:
Before beginning the de-soldering process, ensure you have the necessary tools, such as a soldering iron, a desoldering pump or solder wick, and a knife or similar tool for bending metal tabs. Start by carefully removing the inner workings of the toothbrush, including the power switch plate, without pulling on any thin copper wires. Once you have accessed the battery, follow these steps:
- Using a soldering iron, carefully de-solder the battery terminals or tabs that hold the PCB (Printed Circuit Board) and the cell (battery) in position.
- De-solder the positive and negative terminal solder tags from the circuit board. It is recommended to start with the negative terminal.
- Use a knife to bend the metal tabs upright and away from the board, ensuring no solder remains joining the solder tag to the board.
- If necessary, de-solder the coil, but note that it may come away with the board.
- Remove all solder from the terminals to allow the metal tabs to move back and forth, facilitating the removal of the circuit board later.
Soldering:
When installing the new battery, follow these soldering tips:
- Compare the original battery to the replacement, and trim the solder tags on the new battery to match the length of the old battery using scissors.
- Ensure clean, firm connections when soldering the new battery into place.
- Be cautious when applying heat to the terminals of the cell to avoid damaging the battery.
- If using a battery spot welder to attach the battery tabs, be mindful of the amount of heat applied to prevent damage to the terminals.
- Reassemble the toothbrush handle by snapping or screwing it back together, and charge the toothbrush to test its functionality.
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Reassembling the toothbrush
Now that you have successfully replaced the battery, it is time to reassemble your Braun electric toothbrush. Retrieve the main body of the toothbrush that you set aside earlier. Remember to be careful and not lose the spring at the bottom of the mechanism (inside the copper coil).
Next, place the new battery into the mechanism. Ensure that the negative tab on the cell is bent upwards, allowing space for the PCB (printed circuit board) to be placed back on top. The PCB is the component that controls the charging of the cell and drives the motor. It also has the momentary push button near the top.
Once the PCB and the new battery are in place, solder the four tabs that hold them in position. Two of the tabs will connect to the motor, while the other two will connect to the positive and negative sides of the battery.
After soldering, carefully slide the inner mechanism back into the main body of the toothbrush. Ensure that the white plastic part is aligned correctly and twist it clockwise until it engages and locks into place.
Finally, test your reassembled toothbrush by placing it on the charging cradle momentarily to re-energize the internal chip. Your toothbrush should now be fully functional with a new battery!
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Frequently asked questions
If your Braun electric toothbrush battery needs to be plugged into the charger every few days, it may be time to change the battery.
First, locate the tab at the back of the charger that allows you to pop off the toothbrush's bottom and access the battery. Then, find a replacement battery with the same chemistry (NiMh, NiCd, etc.) as the old one. Finally, follow the steps in reverse to put the toothbrush back together.
The battery in a Braun electric toothbrush is typically a NiMh or NiCd rechargeable battery.
To open your Braun electric toothbrush, place a small adjustable spanner around the flat of the white plastic part of the toothbrush and twist the spanner anticlockwise. The white plastic should disengage from the main body of the toothbrush after twisting about 30 degrees.
Yes, you can replace the battery in your Braun electric toothbrush. However, some people argue that the time and cost involved in replacing the battery may outweigh the benefits of buying a new toothbrush.
