electric toothbrush without a battery

[jagec]

Isn't that only going to be the case if it's a lousy charging circuit?

Yeah, but that describes 95% of rechargeable consumer electronics.

 

[Soundmanred]

Eddie Bower

 

[Destiny]

May be one of these?

http://www.amazon.com/Cenoire-Eluo-S...pr_product_top

 

[LTC8K6]

what's a long time?

A few years.

 

[Kwatt]

I've tried several electric toothbrushes but I'm tired of all the battery issues. After a while they all fade and don't hold much of a charge and don't run at full speed.

So . . . are there any electric toothbrushes that are corded (no batteries)?

The closest I've seen are those polishers in the dental office (somewhat similar to this)

I have asked dentist this and none knew of one.

I would very much like one myself.


.

 

[HeXen]

I want a corded beard trimmer. Those are the worst imo, they die when you really need them and wont run when charger is plugged in.

 

[dullard]

This is not true but the opposite for Li-on batteries. The deeper the discharge, the fewer cycles you get. The "happy medium" for them is around 40% charge but since keeping a battery right around that is almost impossible, it is better just to keep it charged than to let it completely discharge (and of course Li-On batteries have extensive circuitry to keep them from being too deeply discharged, which can make the battery very unsafe).

You can get maybe 20 uses on a typical electric toothbrush. Thus, if you start charging it after every single use (again typical since the storage place is the charging station), you are charging it starting at ~95% capacity. 95% is far, far from the 40% happy medium. Hence, my suggestion to go more times without charging.

Isn't that only going to be the case if it's a lousy charging circuit?

I've seen some "chargers" that were little more than a resistor and a diode. And then there are chargers that continuously monitor the state of charge, and only give it what it can safely handle. These are usually not cheap though.:\

Like jagec said, what electric toothbrushes have expensive/elaborate charging stations? Maybe some do, but many, many don't.

 

[Catteneo]

There are a lot of replies to this post and not a single one actually addressed the question. The OP did not request an argument for using a battery operated toothbrush. The request was for a corded toothbrush.

Tynopik: This reply is a little delayed but if you're still looking, try this:
http://www.broxo.com/en/broxo_orabrush/default.aspx

I found this post because I was looking for the same thing. Continued research found the site above. I haven't tried it yet and I haven't found anything else and this product looks compelling enough that I will be placing an order.

 

[SKORPI0]

Soladey J3X Solar Ionic Toothbrush

 

[sdifox]

my Braun cordless is like 3 year old now...still works fine.

 

[tynopik]

There are a lot of replies to this post and not a single one actually addressed the question. The OP did not request an argument for using a battery operated toothbrush. The request was for a corded toothbrush.

Tynopik: This reply is a little delayed but if you're still looking, try this:
http://www.broxo.com/en/broxo_orabrush/default.aspx

I found this post because I was looking for the same thing. Continued research found the site above. I haven't tried it yet and I haven't found anything else and this product looks compelling enough that I will be placing an order.

wow, thanks for digging that up Catteneo, very interesting!

 

[alkemyst]

I have one that you just shake to recharge. I just go ahead and put toothpaste on it and stick it in my mouth while I shake to charge it. By the time I'm done charging it, my teeth are clean.

I think that is not a toothbrush, no matter what your roommate told you he had in his pants.

 

[alkemyst]

There are a lot of replies to this post and not a single one actually addressed the question. The OP did not request an argument for using a battery operated toothbrush. The request was for a corded toothbrush.

Tynopik: This reply is a little delayed but if you're still looking, try this:
http://www.broxo.com/en/broxo_orabrush/default.aspx

I found this post because I was looking for the same thing. Continued research found the site above. I haven't tried it yet and I haven't found anything else and this product looks compelling enough that I will be placing an order.

Excellent 1st post.

 

[Leros]

I've had two Sonicare toothbrushes. The battery only seems to last 2-3 years, but you can get a replacement.

 

[jaedaliu]

I've had two Sonicare toothbrushes. The battery only seems to last 2-3 years, but you can get a replacement.

My family went all in a few years ago on oral B triumph line toothbrushes (costco & Sams club)

They're all starting to experience battery degradation, and only last 1 - 3 days before needing a recharge. This Christmas, when we're all in the same place, I'm going to be replacing all the batteries. Hopefully, with a little help assembling & disassembling (with me doing the soldering) we can bang them out quickly (after the first few.)

 

[FaaR]

The request was for a corded toothbrush.

You're not going to find many of those, as few people are willing to let themselves get electrocuted in the mouth when the mains transformer fails/gets hit by lightning/is drenched with water/whatever.

I'm surprised you even managed to find one such unit, I pretty much assumed it was illegal to stick a power cord on an electric toothbrush. *shrug*

 

[PowerYoga]

Why don't you just keep the thing in the charger?

 

[sdifox]

Why don't you just keep the thing in the charger?

this is an interesting read

http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries

 

[Catteneo]

You're not going to find many of those, as few people are willing to let themselves get electrocuted in the mouth when the mains transformer fails/gets hit by lightning/is drenched with water/whatever.

A converter steps the power down at the wall to a very safe 14V. There are no moving parts in the converter so the only likely mechanical failure would be a broken cord due to misuse. Electrical malfunction would most probably result in a burned out circuit, which would simply disrupt power to the brush.

It's rather unlikely that a wall converter would get drenched with water since power outlets -- especially those in bathrooms -- are rarely located where they can be easily exposed to water and one would hope the user has enough common sense not to be splashing water at an electrical outlet. But again, the result of drenching would be a burnout and power disruption to the brush. (There would be a danger of electrical fire but that could happen even if nothing was plugged into the outlet.)

Lightning? Maybe. But that's a bit of a reach. If anybody in thunderstorm territory is that worried, I'd expect them to have lightning rods on the building and GFCIs (ground fault circuit interrupters) on their outlets. And to use a manual brush during storms. But you don't need to have a brush in your mouth for lightning to be a concern. If you're sitting near a conductor (computer or whatever) when lightning finds its way into your home, it can easily arc through the air to close the circuit to you.

The original electric toothbrushes were all corded. I was unable to find any reports of electrocution ever being an issue. The switch to batteries wasn't due to electrical danger, it was a matter of convenience. A very dubious convenience in my humble, correct opinion. Battery operation is very rarely a genuine requirement. It is often an outright joke. With toothbrushes, the joke is on the user.

On a related note, standard battery toothbrushes have moving parts within the brush head. These parts form pockets of bacteria growth and create a very real and present danger to oral health. The Broxo has no moving parts in the head. And the stronger, more reliable power source is more efficient at plaque removal.

 

[alkemyst]

A converter steps the power down at the wall to a very safe 14V. There are no moving parts in the converter so the only likely mechanical failure would be a broken cord due to misuse. Electrical malfunction would most probably result in a burned out circuit, which would simply disrupt power to the brush.

It's rather unlikely that a wall converter would get drenched with water since power outlets -- especially those in bathrooms -- are rarely located where they can be easily exposed to water and one would hope the user has enough common sense not to be splashing water at an electrical outlet. But again, the result of drenching would be a burnout and power disruption to the brush. (There would be a danger of electrical fire but that could happen even if nothing was plugged into the outlet.)

Lightning? Maybe. But that's a bit of a reach. If anybody in thunderstorm territory is that worried, I'd expect them to have lightning rods on the building and GFCIs (ground fault circuit interrupters) on their outlets. And to use a manual brush during storms. But you don't need to have a brush in your mouth for lightning to be a concern. If you're sitting near a conductor (computer or whatever) when lightning finds its way into your home, it can easily arc through the air to close the circuit to you.

The original electric toothbrushes were all corded. I was unable to find any reports of electrocution ever being an issue. The switch to batteries wasn't due to electrical danger, it was a matter of convenience. A very dubious convenience in my humble, correct opinion. Battery operation is very rarely a genuine requirement. It is often an outright joke. With toothbrushes, the joke is on the user.

On a related note, standard battery toothbrushes have moving parts within the brush head. These parts form pockets of bacteria growth and create a very real and present danger to oral health. The Broxo has no moving parts in the head. And the stronger, more reliable power source is more efficient at plaque removal.

QFT. If lightning does hit ones home all bets are off whether corded or not. Cordless is definitely safer if that's one's worry. Unfortunately, most of the electronics in the home will be destroyed probably.

 

[Howard]

Stop charging it every night. Problem solved. Charging a battery that is already charged destroys their lifespan.
You should only plug in your toothbrush base once a week, if that.

Is there no genius in the world who can design some circuitry that ACTUALLY disconnects the charging circuit when the battery is full? This goes for any device on the market.

 

[richardycc]

just don't buy the cheap version. My wife used to buy those cheap oral B around $20-40each, none of them lasted more than a year, then I got her their top of line one for around $100, that was like 5yrs ago. My current sonicare is almost 4yrs old, the last sonicare lasted over 5yrs.

 

[Howard]

maybe you missed the 'sonicare' part:
http://www.amazon.com/Philips-Sonica...owViewpoints=1

So apparently Sonicare doesn't know how to design a water-resistant plastic housing.

 

[Catteneo]

Is there no genius in the world who can design some circuitry that ACTUALLY disconnects the charging circuit when the battery is full? This goes for any device on the market.

Chargers that sense the status of the battery have been around for at least ten years. Chargers that regulate charge rate are becoming commonplace on products that come with a charger. Li-ion batteries invariably include power regulation and most non-replaceable batteries today are Li-ion.

Some chargers supply an intermittent or constant "trickle" charge to compensate for the discharge a battery undergoes just by sitting around. But some completely disrupt power supply.

The problem isn't with the chargers, it's with the batteries. We've come a long way but we have a much longer way to go to achieve a truly efficient rechargeable battery.

Soladey J3X Solar Ionic Toothbrush

It should be noted that this is not a "powered" toothbrush and contains no moving parts. The human hand does the work. The toothbrush uses ionic action to (theoretically) neutralize acid and disintegrate plaque.

I would be highly skeptical that the effect is adequate to replace the efficiency of an electric brush. But if the $50 price is no concern, this brush won't do any harm and may be a nice second brush if you alternate the use with an electric.

 

[artvscommerce]

cheapo sonicare + sanyo eneloop rechargeable AA's = win.