Introducción
'Importante: ¡Esta guía es SOLO para Braun Oral-B Sonic Complete 4729! ¡¡¡No para NINGÚN otro cepillo de dientes de Braun ni de ninguna otra marca!!!
La batería de mi cepillo de dientes se agotó y tengo que reemplazarla porque es una pena tirar un dispositivo electrónico solo porque la batería se agotó. Ya lo abrí para ver qué tipo de batería se encuentra allí.
Ahora pedí algunas baterías NiCd de reemplazo y tengo que esperar hasta que lleguen. Probablemente también se podrían usar baterías de NiMH, al menos tienen el mismo voltaje, pero puede haber algunos problemas con el cargador porque las baterías de NiMH pueden explotar si se sobrecargan.
NOTA: Hay algunos cables muy delgados dentro del cepillo de dientes y puede destruir su dispositivo mientras lo "reparas". Pero a quién le importa si el fabricante dice que su única opción con una batería agotada es llevar el dispositivo a un centro de reciclaje.
NOTA: Consulta las normativas locales para el reciclaje de residuos tóxicos (Baterías de NiCd)
Qué necesitas
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Empuja la parte inferior del cepillo de dientes contra la perilla en la parte posterior del cargador. Gira en sentido contrario a las agujas del reloj y la parte inferior debe salir. Coloca el cepillo de dientes con la parte superior hacia abajo sobre una superficie dura y empuja la parte interna hacia afuera.
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Retira la batería vieja.
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Las baterías están soldadas a la placa de circuito. Puedes usar tu soldador aquí si lo deseas, pero creo que no es realmente necesario. Y probablemente el menos es bastante difícil de trabajar porque se encuentra debajo de otras cosas (fig. 3; El círculo marca la conexión menos y el cuadrado la conexión más).
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Si no estás usando un soldador, debes quitar el protector de alambre de las baterías viejas para quitarlas porque son sus conectores para las baterías nuevas. El resorte en la tapa inferior proporciona suficiente tensión para mantener la batería en su lugar y conectada sin soldar.
The connectors (tags) are welded to the battery, not soldered. Do not try to use a soldering iron to detach the tags from the battery - it won't work, and the heat could cause the battery to burst and cause injury.
Generally the new battery comes with new tags attached, so I think best practice is to unsolder the old tags from the circuit board.
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Inserta un nuevo paquete de baterías.
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Si desoldaste la batería vieja de la placa de circuito, debes soldar los protectores de cables del nuevo paquete de baterías a la placa de circuito.
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De lo contrario, simplemente inserta el nuevo paquete de baterías y vuelve a armar el cepillo de dientes. Utilicé un trozo de cartón para asegurarme de que el + se conectara correctamente (fig. 1).
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15 comentarios
Hello Ron,
if you put: " Sanyo 2/KR-600AE 2/3 A Cadnica NiCd Battery Pack 2,4 V " into a search machine you should be able to find a replacement battery for this type.
At least thets how i got mine...
Kind regards Andy
ndjenny -
Do you need to buy 2 of these batteries? It looks like two separate batteries end to end.
sorry for the late reply. No you don't need two batteries. Actually its a 2/3 A battery that means its 2/3 as long as a full A-size battery. in my case they delivered two 1/3 A batteries in one shrinking wrap but there are also 2/3 A batteries in one piece.
ndjenny -
I /think/ any "2/3 A" size battery should work - I've ordered some NiMH ones with nearly double capacity - I anticipate that these will hold more, but take longer to charge up.
Keep in mind that the charger is not made for NiMH you must not overcharge a NiMH battery otherwise it may explode… So you do it at your own risk! Regards Andy
ndjenny -
Hello Tom,
the battery replacement worked very well but after sometimes the Toothbrush stopped working cause there was a crack where, i assume, moisture entered the housing and killed the electronics. So the new battery was still in good shape but the brush sometimes refused to turn on. It was to much hassle to finde the fault , thats why i replaced it last January.
Kind regards Andy
ndjenny -
Thanks for the response, Andy.
Could it have been because you didn't solder the connections?
Or are you fairly certain that it was a moisture intrusion issue?
Hello Tom,
i'm quite sure it wasn't caused by not soldering the battery in. It still worked but sometimes i had to push the button many times before it started stopped running and sometimes it started running by itself. there was also much of this white stuff all over the electronics which is a sign of water/moisture damage. I owned this brush vor over ten years and i not disappointed with it's quality taken in to account how many times it dropped to the ground. If you think about replacing the battery on yours, go for it. Its easy to do, inexpensive and if your brush has no cracks it should work until the replacement battery dies. I don't think its necessary to solder it to the board.
Kind regards Andy
ndjenny -
About the question NiCd batteries or NiMh; toothbrushbattery.com also use a NiMh battery in their tutorial.
I think the toothbrush does have an overcharging safety build-in. The toothbrush stops charging automatically after a few hours. The charging indicator light also stops pulsing then.
How do I know its the battery. Have not used the toothbrush for at least 15 years. When I plugged it in to charge for at least 17 hours the green light comes on solid for the entire time that the plug is in the receptacle. When I remove the toothbrush from the charger the light goes out and no power.
Marv -8-23-2021
If the battery is not used for 15 years it’s probably death. The charger is charging with very low power thus you cannot recondition it inside the device, you'd have to take it out and charge it with decent power and there would be a slight chance to revive it. But it’s still a very old battery and it’s probably not worth the effort.
In fact you know the battery is faulty but you can’t know if something else is gone bad to unless you change battery or power the device fro a different power source.
ndjenny -
If using a soldering iron, desoldering tool is useful. I was able to obtain the batteries and tab them together, shrink wrap, and resolder.
Aaron Giesick - Contestar