Will This Charging Base Fit Your Sonicare? The Complete Model List

By Karoxy Team · Updated September 9, 2026

Sonicare charging-base compatibility starts with the charging system, not just the product-line name. If your handle normally stands over a small plastic post, check the standard-base lists below. If it charges in a glass or uses a dedicated charging system, this HX6100-style base is outside that setup. A familiar name such as 4100 or DiamondClean is not enough to decide.

This guide helps you identify the charging style, read your model number, and separate similar names before confirming fitment. It covers Karoxy’s aftermarket single-post base, which is not made by Philips. Karoxy is not affiliated with Philips.

Single post or charging glass? A 10-second check

Start with the part of the original base that meets the handle. The standard style has one upright plastic post, with the handle sitting over it. That post is what decides fitment. The other end of the cable is a two-pin US wall plug (Type A), which is why this charger is also listed with a 2-pin connector type — the plug and the post are different parts, so check the post.

A glass-based setup looks different: the handle rests in a charging glass instead of fitting over the standard stand. A dedicated charging travel case also calls for checking that model’s charging system. Simply owning a travel case proves nothing, because a storage case and a charging case serve different purposes.

A single post means your handle belongs to the group this base covers — confirm the exact model in the tables below. A glass or a dedicated system points you toward the exclusions instead. Shape alone is not the final test: a handle that appears to sit on a stand still has to match a listed model, because the same brand name does not make every charging base interchangeable.

Where to find your model number

Look for the small printed or engraved identifier underneath the toothbrush handle. Check the original box or invoice for the full product model, especially if the handle carries a shorter identifier. Copy the letters, numbers, slash, and suffix exactly. The identifiers covered here begin with HX, R, or RS.

A model such as HX6850/60 ends with the suffix /60. The suffix distinguishes a particular product version or market configuration. Keep it when comparing your product with the table. The identifier on the handle and the full packaged-product number may differ, so do not assume the bottom label must repeat every character from the box.

Read the handle label separately from the base label. HX6100 identifies the charging-base style discussed here; it is not your toothbrush’s model number. If the writing is hard to read, take a clear close-up and check the packaging before guessing a missing digit.

Compatible by product line

Use this table when you know the product-line name. These are the models this base covers. Match the complete entry, including its suffix where shown. A row covers its listed models; it does not automatically cover every toothbrush ever sold under a similar name.

If your complete model number appears in the table above, this base is the charging stand your handle uses. Match the whole code, suffix included, rather than the closest-looking row.

View the Karoxy HX6100-style replacement charger base and confirm your model in the checker on the product page.

For example, ProtectiveClean 5300 HX6423/34 appears as its own entry. The 6500 series uses the listed HX6462 variants, while HX6471/03 belongs in the 6100 series row. Keeping those details together prevents a familiar series number from hiding a different model.

If your packaging uses a different name, search the code-family table next. An exact code match is more useful than choosing the nearest-sounding row.

Compatible by HX code family

Use this second lookup when you have a code but do not recognize a product-line name. Read every code as an individual entry. The family headings organize the list; they do not mean every code beginning with those digits is supported.

Other older HX6xxx and HX69xx handles that charge on the same standard single-post stand may also be candidates for checking. That broader description is not confirmation for an unlisted model. Send the full identifier for review rather than filling in gaps between the codes above.

In particular, do not read the HX9000 heading as approval for all HX9 models. The listed HX91xx entries and the excluded DiamondClean Smart models need to remain separate. If a code appears only similar to one in the table, treat the match as unresolved.

Which Sonicare handles do not fit

These exclusions take priority over a similar product name, a matching first digit, or a base that looks familiar. Do not use the standard-post shortcut to override a known different charging system.

• DiamondClean Smart 9000 / 9300 / 9500 / 9700 / 9750 / 9900: these are outside this base’s compatibility list. DiamondClean Smart HX9903 and HX9902 are specifically excluded. Their glass or dedicated charging-case setup is different from the standard single-post stand.
• Sonicare 9900 Prestige and AI versions: these use a dedicated charging system and are outside this list.
• Any DiamondClean handle that charges in a glass: do not infer standard-base fitment from the DiamondClean name or a visually similar handle.
• Battery-powered Sonicare PowerUp: a handle that uses replaceable batteries does not use this inductive charging base.
• Oral-B and Braun, all models: these are not supported. A similar upright stand does not establish the same charging system.

An HX9 prefix does not mean the handle fits. Some excluded Smart models begin with those same characters. Compare the entire code: HX9112 is listed, while HX9903 and HX9902 are not. Searching only the first three characters removes the distinction you need.

If the table and your original charging setup seem to disagree, pause the fitment decision and ask for a model-specific check. Do not resolve the disagreement by choosing whichever description sounds more familiar.

Model confirmed and exclusions checked? View the replacement charging base and run the same check there before ordering.

Five model codes people get wrong

1. HX91xx versus DiamondClean Smart HX9903 and HX9902. The listed HX9112, HX9140, HX9141, HX9150, HX9160, HX9172, and HX9182 entries must not be merged with Smart HX9903 or HX9902. The first group appears in the code table; the two Smart codes are excluded. Neither an HX9 prefix nor a shortened family name preserves that distinction. Copy the complete code before comparing it.
2. ProtectiveClean 4100 versus 4100 Series. The ProtectiveClean 4100 row refers specifically to HX6810/50, HX6815/01, HX6816/01, and HX6817/01. Philips also uses the name 4100 Series for HX3681/26. Do not attach “ProtectiveClean” to every product described as 4100. That shared number is a reason to check the label more carefully, not a reason to combine the rows.
3. HX3681 without its suffix. Retain the full suffix and check the product name printed on your packaging. Do not use HX3681 alone to represent an entire 3100 or 4100 line. The complete model HX3681/26 identifies a 4100 Series variant; this naming example does not add that model to the compatibility tables.
4. HX3641 versus a 4100 label. HX3641 belongs to the 1100 series. It should not be relabeled as a 4100 because another model number looks similar. Product identity and charging-base fitment are separate checks: correctly naming a handle does not automatically add it to this list. Use the actual label instead of guessing from the sequence of digits.
5. HX6462 versus HX6471. The listed HX6462/05 through HX6462/09 variants belong to the 6500 series. HX6471/03 belongs to the 6100 series. These codes are easy to transpose because they start similarly. Read the complete code and suffix against the correct table row; do not assign the series from memory.

Sonicare for Kids

Sonicare for Kids HX6321/02 is included in the product-line table. If that is the complete model on your packaging, use that specific entry for the compatibility check. The code-family table also lists individual Kids-related identifiers, but the word “Kids” alone should not replace a code match.

Check the same physical detail you would on an adult handle: how the handle meets its original charging stand. A child-friendly design, bright color, or character decoration does not establish a charging system. When the identifier is unclear, use the label and original base as your starting evidence.

AirFloss is not the same as a water flosser

Sonicare AirFloss HX8211/03 and the AirFloss Ultra models listed above are included in this compatibility guide. Philips Power Flosser and Waterpik are different devices and are not covered by these entries. Do not extend an AirFloss match to every product described as a water flosser, even when a search result groups them together. Check the AirFloss or AirFloss Ultra name alongside the complete model number. The shared purpose of cleaning between teeth does not establish a shared charging base; the exact device and its original charging setup are what matter here.

If your model is not on this list

Return to the charging-style check first. A handle that uses a standard single-post stand is a candidate for further verification; a charging glass or dedicated system points away from this base. An omitted code is not automatic proof of either compatibility or incompatibility.

Send the full model number to support@shopkaroxy.com, together with clear photos of the handle’s bottom label and original charging base, if available. Include the box model when it differs from the handle identifier. Keep the result unconfirmed until those details can be checked. Do not substitute a nearby code or assume an entire family is covered.

Frequently asked questions

My handle charges in a glass — will this base work?

No. A Sonicare handle designed to charge in a glass is outside this standard single-post base list. Use the charging system specified for that exact model; a similar-looking handle does not establish compatibility.

My model starts with HX9. Does that mean it fits?

No. HX9112 is listed, but DiamondClean Smart HX9903 and HX9902 are excluded. Match the complete model number and charging system. The HX9 prefix alone cannot tell you whether the base fits.

Is a ProtectiveClean 4100 the same as a 4100 Series?

Do not treat those names as interchangeable. The ProtectiveClean 4100 row lists four specific models. A handle labeled 4100 Series needs its own model check; the shared number does not establish the same identity or fitment.

Is Phillips Sonicare the same as Philips Sonicare?

Yes — also spelled Phillips Sonicare or Sonic Care, it is the same brand, and this base fits the same handles either way. Fitment still depends on your exact model and its charging system, not on the spelling you searched for.

My model number is not listed. What now?

Check whether it uses a standard single-post stand, then send the full model number and clear photos of the handle label and original base to support@shopkaroxy.com. Treat the result as unconfirmed until the model and charging system are identified.

Does it fit my AirFloss?

AirFloss HX8211/03 and the AirFloss Ultra models in the product-line table are listed. This does not extend the list to Philips Power Flosser or Waterpik devices. Match your complete model number before drawing a conclusion.