Not charging on 45W charger with fast charge enabled

[Arjun_1609]

My S25 ultra wont charge with the 45 W super fast charger if the fast charging is enabled. On the other-hand, fast charging is done with the apple adapter(25W). Anyone having similar issues?

[Members_rZvVM3n]

Same problem here with both S24U and S25U. I returned the 45w and ordered the regular 25w 

[JuliusCesar]

Bro return it, get 24u or 16 pro not 16promax 17iphone looks like pixel and is ugly imo

[JuliusCesar]

I'd say to get the 24u then. Still has corners, and I have 0 problems with it. I personally would stick to Samsung because we are feature heavy

[JuliusCesar]

Ah I see I see. I'm wondering if you could swap

[JuliusCesar]

Also bt gestures are still with the 24u

[hereiamiguess]

Mine isnt working right either. Samsung orig 45W plug and usbc. It says it is doing super fast 2.0 and fives me a time estimate, then proceeds to charge at the rate phones did in 2010. It is my first day using it!

[edgardostgo]

Someone with the same problem as the galaxy s25 ultra connected it with the original 45W charger and it only lasts 2 seconds charging, it is removed and charged again, the charger is new original and is the one that comes with the 5A cable, it was tested with another cell phone and it charges without problems. The first days it charged without problems with super fast charging 2.0

[S25Ultra]

So as a samsung community poster this is what I've learned via the community 

A samsung ultra 25 s only super fast charges from 0 to 30 percent 

Now it will show if connected to a approve charger that 2.0 fast charging is active when connected but dependent on battery level your not getting that up to 45 watt speed 

If you use a free app tool like devcheck you can watch real time specs of charging watts and amps 

So let me give you a example I have the oem samsung 55w charger from samsumg purchased new with my s25 ultra 

Depending on my battery level the phone and charger will say instead of pushing up to 5 amp at 45 watt will do nearly 8 amps at 20 to 30 whats that fluctuates for battery health I've fluctuated different cords and even even my 140 watt qc5.0 pd 3.1 5amp

I have sever new up to 240 w 5amp cords chubby cable for example when my phones at over 80% I've noticed it peaking around 6 watts at 1.5 amps 

So the phone and chargers are communicating to give maximum charge when needed when the battery is low and save the battery life 

I also saw it's recommended to enable battery protection at adaptive of your one that stays connected to the cable bc not exceeding 80% is better for.battery health longevity if you use the full charge through the day basic is perfect for you 

If been communicating with samsung and techs regularly to see if my phone was defective and if i should send it in thankfully I don't hope this helps clarify

[S25Ultra]

Supportive material

[JackRedmond]

Did you find out if your phone was defective? Did you find out why it wasn't giving maximum charging throughput?