How To Fix Galaxy Watch 9 Not Charging Or Charging Slowly (2026)
Your Galaxy Watch 9 is charging far slower than Samsung says it should, or it will not charge at all.
Owners reported exactly this soon after the watch went on sale, and part of it is fixable with the right charger and adapter.
The steps below follow Samsung’s own support pages and take about 10 minutes to check.
Quick answer: how fast should Galaxy Watch 9 charge?
| Model | Samsung normal charge time | Fast charge | Charger model |
|---|---|---|---|
| Galaxy Watch 9 (40mm) | 80 minutes | Not supported | EP-OL300 |
| Galaxy Watch 9 (44mm) | 90 minutes | Not supported | EP-OL300 |
If your watch takes much longer than that on the bundled charger, work through the fixes below.
Samsung’s related help also lists the charging environment, physical obstructions and incompatible adapters as common causes of slow charging.
Start with the accessories, because they cost nothing to check and are the causes Samsung itself names.
What are owners reporting?
PhoneArena reported in August 2026 that a 44mm owner needed about 2 hours just to pass 90% and then stalled.
Android Authority, as of August 12, 2026, said owners reported two to four hours per charge and that the problem does not affect every unit.
Neither outlet had a Samsung comment or an announced fix when it published.
One 44mm owner said an older Galaxy Watch 4 charged in under an hour, according to PhoneArena.
Android Authority also relayed a report that an older Watch 6 puck charged faster than the included cable, which it said may point to a firmware handshake issue.
Why does the Watch 9 charge slowly?
Samsung’s support page names an incompatible charger as the likely cause, since an incompatible one can cause slow charging, failures and repeated reconnections.
PhoneArena also cited one owner’s test where charging power fell from about 5.5W to about 3.5W while the watch was only half charged.
That points to heat, but it is one owner’s measurement and not a Samsung statement.
What counts as a real charging problem?
Samsung rates the 40mm Watch 9 at 80 minutes and the 44mm at 90 minutes for a normal charge.
Owner reports of two to four hours are well outside that range.
Samsung also says an incompatible charger can trigger repeated reconnections or charging error notifications, so check the charger first.
Use the right charger
- Bundled cradle: use the charger that came in the box.
- Replacement cradle: Samsung lists EP-OL300 for the Watch 9, which also shipped with the Watch 7 and Watch 8.
- Not compatible: Samsung says earlier Galaxy Watch chargers, and the EP-OR825, do not support the Watch 9.
PhoneArena noted some owners complain that Watch 8 chargers do not work properly with the Watch 9, even though Samsung lists the model as compatible.
Which charger fits which Galaxy Watch?
Samsung lists these dedicated wireless chargers for current and recent models.
| Watch | Samsung-listed charger |
|---|---|
| Galaxy Watch 9 | EP-OL300 |
| Galaxy Watch 8 and Watch 8 Classic | EP-OL300 |
| Galaxy Watch 7 | EP-OL300 |
| Galaxy Watch Ultra | EP-OL300 |
| Galaxy Watch 6 and Watch 5 | EP-OR900 |
| Galaxy Watch Ultra 2 | EP-OL715 |
Samsung says Galaxy Watch Ultra 2 and Watch 9 owners should not use the EP-OR825.
Match the wall adapter
Samsung says to use a Samsung adapter rated 5V/2A or higher with Power Delivery.
- Recommended models include EP-TA800, EP-TA845, EP-TA865, EP-TA220, EP-T4511, EP-T1510, EP-T6530, EP-TB010 and EP-T2510.
- Avoid older AFC or QC chargers, portable power banks and USB ports without PD.
- Do not charge through a PC or a multi-port hub, because low input power can slow or block charging.
| Power source | Effect on charging | Samsung advice |
|---|---|---|
| Samsung PD adapter, 5V/2A or higher | Works as intended | Recommended |
| Older AFC or QC charger | Can limit speed | Avoid |
| Portable power bank | Can limit speed | Avoid |
| USB port without PD | Can limit speed | Avoid |
| PC or multi-port hub | Can slow or prevent charging | Do not use |
Clear the contacts and remove obstructions
- Take the watch off any thick case, metal strap or unofficial cover.
- Wipe the back of the watch and the charging pad, because sweat, dust or liquid can interfere.
- Keep the pad away from moisture, since Samsung says it is not waterproof.
- Place the watch on the cradle again and check that charging starts.
Does keeping the charger cool help?
Samsung says a watch feeling warm while charging is normal.
Some owners, according to PhoneArena, cooled the charging puck with ice or ran a desk fan nearby and got close to the advertised time.
That is an owner workaround and not Samsung advice, so at minimum charge in a cool room and keep the charger dry.
Run the Samsung Members charging test
- Open the Samsung Members app on the paired phone and tap Support.
- Under Connected device diagnostics, select your Galaxy Watch.
- Tap Wireless charging to run the automated test.
Samsung notes that menu names can vary by watch, phone and app version.
Is a software fix coming?
When PhoneArena and Android Authority published, Samsung had not commented and no fix had been announced.
PhoneArena described a firmware update as something owners hoped for, not a confirmed fix.
Check Samsung’s support pages again if the cooler and charger changes above do not help.
Skip Wireless Power Sharing from your phone
Samsung says Wireless Power Sharing is not supported on the Galaxy Watch 9.
Use the cradle and a wall adapter instead.
When to contact Samsung
If charging is still slow with the dedicated charger and a genuine Samsung adapter, Samsung advises taking both to a Samsung service center.
You can also use Samsung chat support or the Samsung Members app for online help.
Work from the cheapest check to the most involved, and stop as soon as charging returns to normal.
Which fix do you need?
| Symptom | Likely cause | Fix |
|---|---|---|
| Over 2 hours at room temperature | Heat or charger mismatch | Use EP-OL300, 5V/2A PD adapter |
| Charging keeps disconnecting | Dirty contacts or case | Clean and remove obstructions |
| Not charging at all | Old or unsupported charger | Stop using EP-OR825 or older pucks |
| Charges from a PC port | Low input power | Use a wall adapter |
More Samsung watch help: Galaxy Watch 8 battery drain, Galaxy Watch Ultra battery drain and Galaxy Watch 5 not charging.
Sources: Samsung Watch9 and Ultra2 slow charging, Samsung slow or interrupted charging and PhoneArena owner reports.