For a Galaxy Tab S9, Tab S10 Ultra or Tab A9+ that will not charge, Samsung's article gives a split by symptom: not fast charging, not charging with a wired charger, stopping at 80 or 85 percent, not charging on a PC, and not charging on DeX. For a tablet that will not charge at all: check for a hot or cold warning, verify that device, charger and cable have no damage, check the USB connection for dust and bent pins, charge from a known-good Samsung charger in a working outlet for at least an hour, and hold the power button for 15 to 20 seconds.
For slow charging, turn on Fast charging under Battery, Charging settings and use a Samsung 25 W, 45 W or 60 W charger. Samsung also says Galaxy Tab devices do not support wireless charging.
Differential
Likely causes of “Samsung Galaxy Tab S9, S10 Ultra and A9+ will not charge or charges slowly”, and how to tell them apart
- 1
A non-Samsung or low-power charger
What separates it Charging is very slow, or the tablet loses charge in use
How to confirm Samsung says to use its 25 W, 45 W or 60 W charger; the Tab S9 lists 45 W PPS and 15 W non-PPS, per Wikipedia
- 2
Fast charging switched off
What separates it The tablet charges slowly on a good charger because fast charging is switched off
How to confirm Settings, Battery, Charging settings, turn on Fast charging
- 3
Battery protection limiting the charge
What separates it Charging stops at 80 or 85 percent every time and the battery never reaches a full charge
How to confirm Samsung says to turn Battery protection off if you want a full charge
- 4
Dust, moisture or bent pins in the USB-C port
What separates it The plug is loose or charging drops because of dust, moisture or bent pins in the USB-C port
How to confirm Look with a flashlight; Samsung says to check for corrosion and bent pins
- 5
Too hot or too cold to charge
What separates it The tablet reports a temperature warning because it is too hot or too cold to charge
How to confirm Unplug it and let it return to normal temperature first, as Samsung says
- 6
A third-party app interfering
What separates it Fast charging works in Safe mode only because a third party app is interfering
How to confirm Boot into Safe mode and remove recent apps one by one
Before you touch a setting
Record this first — changing settings destroys the evidence
- Which tablet, and the charger's wattage and brand
- Whether it charges slowly, stops at 80 percent or does not charge at all
- Whether the tablet is warm or a temperature warning appeared
- Whether the port has lint, moisture or a loose feel
Try in this order
0 of 7 completedUse a Samsung charger
ReversibleUse the tablet's own 25 W, 45 W or 60 W Samsung charger and cable, and try another outlet.
Turn on Fast charging
ReversibleOpen Settings, Battery, Charging settings and check which charging features are turned on, since limits there can stop charging early.
Check Battery protection
ReversibleCheck Battery protection, and turn it off if the charge stops at 80 or 85 percent.
Inspect the port and cable
ReversibleInspect the port and cable, by looking for dust, corrosion and bent pins with a flashlight.
Try Safe mode
ReversibleTry Safe mode, and if charging works in Safe mode, remove the apps that you installed recently.
Force a restart
ReversibleForce a restart, by holding the buttons until the Samsung logo appears, then charging for an hour.
Book service
ReversibleBook service, and if nothing works, visit a Samsung walk in center or book a repair online.
Model-specific
What is true of this model and not of its siblings
- Charging
- Tab S9: 45 W USB PD (PPS), 15 W non-PPS; Tab S10 Ultra: up to 45 W; no wireless charging on the Galaxy Tab series, per Wikipedia and Samsung.
- Port
- USB-C 3.2 with DisplayPort on the Tab S9, per Wikipedia. Samsung's DeX accessories need a charger of more than 9 V and 1.67 A.
- Part numbers
- No part number is needed. Samsung identifies a tablet by model number such as SM-X710 (Tab S9) and SM-X210 (Tab A9+ Wi-Fi), shown in Settings, About tablet.
- Tools and supplies
- A known-good Samsung charger and cable, a flashlight to inspect the port and a soft towel to lay the tablet on. Do not probe the port with metal.
- Repair cost
- iFixit lists the Tab A9+ at $220 to $320 at launch, a yardstick for judging a quote.
- Other models this page answers
- These steps also fit the Galaxy Tab S10 Ultra, Galaxy Tab A9+.
Stop boundary
When this stops being a self-service repair
- !If it will not charge after a known-good Samsung charger for an hour, contact Samsung or a service center
- !If the liquid indicator in the SIM or SD slot is pink or red, tell the service center
- !If the port is loose or the pins are bent, stop using it and get it inspected
Evidence ledger
Sources behind this answer
Fast charging setting, 25 W, 45 W and 60 W chargers, PD3.0 PPS, cable and port checks, 80 or 85 percent limit, DeX, PC and wireless notes.
Temperature range and charger-related heat.
Tab S9 8,400 mAh battery, 45 W USB Power Delivery PPS, Snapdragon 8 Gen 2, 11-inch Dynamic AMOLED 2X, microSDXC up to 1 TB, IP68, S Pen and Wi-Fi with Bluetooth 5.3.
Tab S10 Ultra 14.6-inch Dynamic AMOLED 2X, 11,200 mAh battery, 45 W fast charging, Dimensity 9300+, IP68 and dedicated microSDXC slot.
Tab A9+ 11-inch TFT LCD, 7,040 mAh battery, Snapdragon 695 5G, 64 to 256 GB storage and its update commitment of three OS upgrades and four years of security updates.
Exact questions
Common questions
Can a Galaxy Tab charge wirelessly?+
Samsung's article says Galaxy Tab series devices are not compatible with wireless charging, so a fault is not fixed by a charging pad.
What charger does the Tab S9 need?+
Wikipedia lists 45 W USB Power Delivery with PPS, and 15 W without PPS. Samsung's article names 25 W, 45 W and 60 W chargers with PD3.0 PPS.
Why does it stop at 85 percent?+
Samsung says Battery protection limits charging to 80 percent or a set level. Turn it off to charge to 100 percent.
Can I charge from a PC?+
Samsung says to use the travel adapter that came with the device. If you use a PC, power the tablet off so it charges faster, and use a USB 3.0 port if one is available.
What if DeX is running?+
Samsung says DeX accessories need a high-speed charger of more than 9 V and 1.67 A, and battery packs are not compatible with DeX.
Does the S10 Ultra charge as fast as the S9?+
Wikipedia lists fast charging up to 45 W for the Tab S10 Ultra and 45 W PPS for the Tab S9. The Tab A9+ is not listed at 45 W.
How long should I wait if the battery is flat?+
Samsung says the charging indicator may take up to 10 minutes to appear on a fully depleted battery.
Is third-party charging safe?+
Samsung says not to use other chargers because they can hinder charging and cause battery issues.
What if the tablet reports it is too cold?+
Samsung says to unplug the charger and let the tablet return to normal temperature before proceeding.
Can moisture in the port stop charging?+
Yes. Samsung warns that charging with moisture in the USB port risks damage, so dry the tablet before trying again.
Do I lose data at service?+
Back up before any repair. Samsung's articles warn that a factory reset erases everything, and a repair may involve a replacement.
Will Safe mode change charging?+
It disables downloaded apps, which tells you whether an app is interfering with charging.