Charging complaints on the Galaxy S26 are specific, and they are easy to test. Owners report a phone that charges at about 5 W and never reaches Fast charging or Super fast charging, on chargers that charge their S25 or older Samsung phones at full speed. Others get the full wireless speed only if they place the phone on the pad first and then plug the pad in, and otherwise see about 7 W. Some describe a phone that says it is charging and stops when it is moved, and a moisture warning in a dry port. The S26 itself is rated 25 W wired, so the first check is that your charger and cable are the 25 W kind and not a plain brick.
Differential
Likely causes of “Samsung Galaxy S26 will not charge or charges slowly”, and how to tell them apart
- 1
A charger or cable that the S26 treats as slow
What separates it The lock screen says Charging slowly and the rate is about 5 W, while an older Samsung phone fast-charges on the same charger
How to confirm Try Samsung's 25 W adapter and a 3 A cable; if that works, the first charger or cable was the limit
- 2
Wireless charging that only starts at full speed in one order
What separates it Wireless is about 7 W unless the phone is placed first and the pad is plugged in after
How to confirm Unplug the pad, put the S26 on it, then plug the pad in, and compare the rate
- 3
A false moisture warning
What separates it The phone reports moisture in a dry port and stops charging
How to confirm Dry the port, restart, and clear lint with a wooden toothpick; if it persists, report it with the date
- 4
An intermittent connection
What separates it The phone says charging and stops when you move it
How to confirm Try another cable, and check that the plug sits fully in the port
- 5
Heat
What separates it Charging slows and the back is warm
How to confirm Remove the case and charge idle in a cool room
Before you touch a setting
Record this first — changing settings destroys the evidence
- The label on the lock screen during a charge: slowly, fast or super fast
- Whether the charger and cable work at full speed on another Samsung phone
- Whether wireless starts only in one order
- The One UI version and security patch date
Try in this order
0 of 6 completedRead the lock screen label
ReversiblePlug in and read whether the S26 says slow, fast or super fast; it tells you whether the charger, the cable or the phone is the limit.
Test a known-good 25 W pair
ReversibleUse the Samsung 25 W adapter and its cable, plugged into a wall socket.
Try the wireless order
ReversibleUnplug the pad, place the S26, plug the pad in, and see whether the rate climbs.
Dry and clean the port
ReversibleSwitch off, dry the port and lift lint with a wooden toothpick.
Restart and update
ReversibleRestart, then install the newest patch; Samsung has been issuing charging fixes.
Report a persistent fault
ReversibleSamsung Members, Get help, Error report, with the charger models and the label you see.
Model-specific
What is true of this model and not of its siblings
- The S26's charging
- A 4,300 mAh battery and 25 W wired charging on the S26, against 4,900 mAh and 45 W on the S26+.
- What owners found
- Slow 5 W charging on good chargers, wireless that depends on the order of plugging, and a moisture warning that appears in a dry port.
Stop boundary
When this stops being a self-service repair
- !If the S26 stays at about 5 W on two known-good 25 W chargers and cables, send a Samsung Members error report and book a check
- !If the moisture warning appears in a dry port repeatedly, ask Samsung to inspect the port
- !A hot or swollen phone goes to service at once
Evidence ledger
Sources behind this answer
Owners whose S26 charged at about 5 W on chargers that work on other Samsung phones.
Reports of S26 wireless charging not reaching its rated speed.
Samsung's US product page for the S26 and S26+.
Per-model battery, charging, chip and display for the S26, S26+ and S26 Ultra.
Exact questions
Common questions
How fast does the Galaxy S26 charge?+
Samsung lists 25 W fast charging for the S26 and 45 W for the S26+; the wireless rate depends on the pad.
Why does my S26 charge at 5 W?+
Owners describe this on chargers that work at full speed on other Samsung phones. Try Samsung's 25 W adapter and cable, restart, and install the newest patch.
Why is wireless charging slow on my S26?+
Some owners get the full rate only if they place the phone on the pad before plugging the pad in; otherwise they see about 7 W.
Why does my S26 say moisture in a dry port?+
A false detection is reported; dry and clean the port, restart and update.