
Philips Sonicare
ProtectiveClean 4100
Affordable, durable, great clean; strong vibration and magnet issues.

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I purchased the Phillips One that uses a AAA battery and has a small cover it’s much smaller than my sonic are but my gums are thanking me ….
You can do it for a lot less. A Sonicare One (that runs on a AAA battery) is like $15 and just as good as any other Sonicare i.e. really good. My last Sonicare rechargeable lasted -- I shit you not -- twenty years. But I got the One because it was good to have a good toothbrush at work as well as at home, plus it's nice not having to put the thing on a charger (or travel with the charger). Likewise, a generic water flosser that runs on AA batteries is like $40. My Walmart generic one has been going strong for a decade.
Get a Sonicare One. $20, takes AAA batteries, and lasts practically forever. I've got one at home, one for the office, and a backup one in my travel bag. I'll swear by Philips Sonicare. My first one lasted more than 20 years and they still sell replacement brush heads for it.
Searching for the same thing, I ended up buying an AAA-powered Philips Sonicare One, and [this](https://www.amazon.com/dp/B0CFT759FP) USB-C rechargeable AAA battery.
Yes. I have the Philips One brush that uses a regular AAA battery. I carry a spare AAA battery with me but I haven’t needed it. It can go into checked luggage. It’s really small and doesn’t take up that much more room. It’s fine for 2 weeks.
Philips One, in the AAA battery option. This is a sealed sonic mechanism, not a cheap and less effective spinner (which also suffer from toothpaste egress). And I'm not new to this game; I've owned three large sonicare systems over the last decade or so. The P.One blows it away in a tiny size, crazy battery life (months!), and zero obsolescence because there's no soldered in LiOn battery that's degrading every charge until the entire system is junk (hello several $hundred dollar sonicare system that I've replaced every 3 years).
Many of the Sonicare models use a small USB charging puck. They also have the Philips One which has two models, AAA or USB rechargeable. I use the AAA model when traveling but note that it is ridiculously weak compared to the cheapest Sonicare model. If you find your electric toothbrush is an improvement to your oral hygiene compared to a manual toothbrush, then it's absolutely worth the extra space.

Philips Sonicare
ProtectiveClean 4100
Affordable, durable, great clean; strong vibration and magnet issues.

Philips Sonicare
4100 Series
Affordable, durable, great clean; some find vibration unpleasant.

Oral-B
Pro 1000
Affordable, effective rotating clean, but loud with poor battery.

Oral-B
iO 3 Black Electric Toothbrush
Exceptional clean, gentle, but mold-prone with pricey heads.

Philips Sonicare
ProtectiveClean 6100
Gentle, advanced clean, good value, but bulky travel case.

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Autobrush - Sonic Pro Electric Toothbrush

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Philips Sonicare - Philips One Rechargeable Toothbrush

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Oral-B - Pro 1000

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Philips Sonicare - ProtectiveClean 5300 Sonic electric toothbrush

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Oral-B - iO 3 Black Electric Toothbrush

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Oral-B - iO 3 Black Electric Toothbrush