Electric Toothbrush Charging, Battery Life and Recycling

A rechargeable electric toothbrush takes anywhere from about 3 hours to 24 hours to charge fully, depending on the maker and model. Oral-B says most of its handles take 12 to 18 hours on average and its iO 7, 8 and 9 Series about 3 hours; Philips says a Sonicare may take up to 24 hours. Once charged, makers' stated run times range from five days (the low end of Oral-B's range) to BURST's claimed 75 days for its Curve.

Those are the makers' own figures, read on their US pages on 18 October 2026. We have not timed any brush ourselves. This guide puts the charging rules in one place: how long to charge, whether a brush can live on its charger, what to check when it will not charge, what a replacement charger has to match, and how to get rid of a handle when the battery is finished, which the makers' pages rarely mention.

How long to charge: the makers' own numbers

Charge time and run time are two different numbers, and makers publish them unevenly. Oral-B publishes average charge times; Philips publishes a maximum charge time and a run time for each model; BURST publishes run time and says little about charge time.

Oral-B also gives a broader rule: a full battery should last between five and fourteen days of brushing twice a day for two minutes, and its manual lists the exact charge time for each handle and charger pair on its last page. Sharing a handle, brushing more than twice a day or brushing longer than two minutes all mean charging more often, Oral-B adds.

Run-time claims are measured the maker's way. Philips's 14 days assume standard mode; a stronger mode will use more charge. Treat any run time as a ceiling, not a promise.

Before the first brush: charge it fully

Both big makers ask for a full first charge. Oral-B says it is important to fully charge the brush before first use "to get the most out of" it, and that for some models it can take up to 10 minutes after plugging in before the charging light starts to flash. Philips says the battery indicator flashes while charging and stops when full, which "may take up to 24 hours".

If the light does not appear straight away on a brand-new handle, give it those few minutes before deciding the charger is faulty. Oral-B notes the delay can stretch to 15 minutes if the battery was completely drained during brushing.

Can you leave it on the charger?

It depends on the maker, and their advice differs. Philips says plainly that you may leave a Sonicare on a plugged-in charger between brushings, "as this will not affect the battery lifespan".

Oral-B's pages do not agree with each other, so it is worth knowing all three versions. Its charging FAQ says to keep the Vitality, which has no charge indicator, on its connected charger when not in use, and to unplug and fully discharge any handle every 6 months to keep the battery at maximum capacity. Its iO Series 2 page says the handle can be stored on the plugged-in charger to keep a full charge. But its cleaning guide, last updated in June 2025, says to use a fully charged handle until no charge is left and then recharge fully, instead of charging between uses.

Where the pages differ, follow the manual that came with your model. If it says nothing, a reasonable middle course from Oral-B's own wording is to keep the brush on its stand day to day and run it flat about twice a year.

BURST's Curve is designed the other way: a detachable USB-C cord and a long stated run time, so it spends most of its life off the charger.

Why a brush stops holding charge

A rechargeable battery wears with use, and a brush that once lasted two weeks will eventually last less. Oral-B says that if a fully charged handle still gives short run times after the checks below, its two-year manufacturer's warranty applies, and it runs an online repair service that needs your receipt. Philips says all Sonicare toothbrushes and flossers come with a 2-year warranty and has an online warranty request.

Keep the receipt or register the brush when you buy it. Oral-B offers an optional extended warranty when you register a handle with it, and the repair route on both makers' pages starts with proof of purchase.

Not charging: the checklist

Most "dead" brushes are a power problem, not a battery problem. Oral-B's own troubleshooting page lists the usual causes, and they apply to any brush on a charging stand.

1. Check the socket works. Oral-B points out that a bathroom-cabinet socket may only be live when the cabinet's light switch is on.
2. Move the charger off metal. Oral-B says a metal surface can interfere with charging.
3. Charge for the full time in your manual, not just overnight if the manual says longer.
4. Wait for the light. It can take up to 10 to 15 minutes to start flashing on a fully drained Oral-B handle.
5. Use the original charger. Philips says not all Sonicare chargers are compatible with each other.
6. Check whether your model has a light at all. Oral-B says all its brushes except the Vitality and Pro 500 have a charging light.

If none of those works, the warranty route above is the next step rather than a new charger, because the fault may be in the handle.

Replacement chargers and travel: voltage and fit

A replacement charger has to fit the handle and match the electricity where you use it. Philips says to use the original charger that came with the brush and that some of its chargers have a USB-A connector that needs a wall adaptor not included in the box. Oral-B says its brushes come with region-specific chargers and that the voltage is printed on the base.

Oral-B's table of charger types is useful before a trip:

• a base marked 100-240V, supplied with some Genius models, works globally;
• a base marked 220-240 needs a voltage converter in countries with less than 220 volts, such as the US and Canada;
• a base marked 110 volts, 60 cycles needs a converter in countries with higher voltage.

A plug adaptor changes the shape of the plug, not the voltage, so a 110-volt base needs both in Europe. A USB-charged brush avoids the question, because it charges from any USB adaptor or laptop. For what to pack and airline battery rules, see our guide to taking an electric toothbrush on a plane and our comparison of travel electric toothbrushes.

If you do need a replacement Oral-B or Philips base, buy one that names your model, through the maker or a retailer such as Amazonaffiliate, and check the voltage printed on it before you pay. If you would rather carry a cable than a stand, the BURST Curveaffiliate charges by USB-C and states up to 75 days per charge.

How long a handle lasts

No maker we read publishes a lifespan in years for a handle. What they publish is the warranty: 2 years from Oral-B and Philips. Beyond that, a handle lasts until its battery no longer holds a useful charge or the motor fails, and the makers' pages do not say when that will be.

What you can control is the head, which wears far sooner. The ADA says to replace a toothbrush, or a head, every three to four months or sooner if the bristles are matted or frayed. Our guide to replacement heads covers what a year of heads costs.

Disposal: lithium-ion batteries, take-back and recycling

An electric toothbrush handle is electrical waste with a battery inside, and it should not go in the household bin. The US Environmental Protection Agency says lithium-ion batteries and devices containing them should not go in household garbage or recycling bins, because they can be damaged or crushed in collection and sorting and start fires.

In the US, the EPA says to take devices containing lithium-ion batteries to certified electronics recyclers, retailer take-back programmes or your local household hazardous waste collection, and names Earth911 and Call2Recycle as ways to find a drop-off point. It also advises putting each battery or device in a separate plastic bag and taping over battery terminals. Not every battery is meant to be removed by the user; follow the markings and the manual rather than prising a handle open.

In the UK, the Recycle Your Electricals campaign says anything with a plug, battery or cable can be recycled, that batteries and electricals should never be binned, and that shops selling electricals must take back an old item when you buy a new one, free, under the retailer take-back scheme in place since 1 January 2021. Household recycling centres also take small electricals.

The brush that needs no charger

A manual brush never needs charging, and for most people it does the job. The NHS says it does not matter whether you use an electric or manual toothbrush, as long as you clean all the surfaces, twice a day for about two minutes. If charging has become a nuisance, our guide to electric versus manual toothbrushes sets out what the evidence says, and a soft manual brush pays us nothing. If you are replacing a handle instead, our spec-sheet comparison of electric toothbrushes notes what each maker does and does not state about battery life.