Question My Samsung Galaxy Tab S4 is not fast charging ?

[ghalibmeer]

My Samsung Galaxy tab S4 is not fast charging anymore tried various chargers and cables...all of these chargers and cables are charging other devices pretty good. The charger I used to fast charge my tab does not work anymore.

Note: the only charger and cable it shows fast charging is Poco F3 charger and cable which belongs to my friend. Please help

 

[kerberos_20]

both charger is chipped, i believe samsung uses QC for fast charging

looking at google resultts points that tab s4 does not support USB-PD fast charging (these days common), but QC 2.0 (qualcomm proprietary fast charging)
that means:
slow charging 5v/2A (10watts) - pretty much any charger
fast charging 9v/2A (18watts) - not every charger
but since QC is adaptive, that means if your phone talks with your charger and it doesnt support QC charging, it will stay at 5volts and wont switch to 9volts

so when purchasing charger, make sure it supports QC 2.0 and not just PD, some chargers support both QC and PD

 

[ghalibmeer]

both charger is chipped, i believe samsung uses QC for fast charging

looking at google resultts points that tab s4 does not support USB-PD fast charging (these days common), but QC 2.0 (qualcomm proprietary fast charging)
that means:
slow charging 5v/2A (10watts) - pretty much any charger
fast charging 9v/2A (18watts) - not every charger
but since QC is adaptive, that means if your phone talks with your charger and it doesnt support QC charging, it will stay at 5volts and wont switch to 9volts

so when purchasing charger, make sure it supports QC 2.0 and not just PD, some chargers support both QC and PD

But why my old charger which used to fast charge is not fast charging now ?

 

[ex_bubblehead]

But why my old charger which used to fast charge is not charging

Broken wire is the most common reason. Bottom line, just go to Samsung and buy the correct power adapter. Toss the old one.

 

[hedwar2011]

Charging bricks (or butts) can also wear out over time from charging, etc. If multiple cables do the same thing, try a different brick.