45W Charger is slower than 25W Charger

[AndroidRaven]

I decided to get the 45W charger for whatever reason. Plugged in at 1% and 30 minutes later was sitting at 54% percent. Phone was on with the screen off. It took exactly 70 minutes to charge to 100%.

The 25W charger charges from 0% to 100% in 66 to 68 minutes for me.

Fast cable charging is enabled in the settings. The cable that came with the 45w brick is being used. I'm very confused. I've noticed other times that it was greatly slower than my 25w charger.

Obviously it varies a lot based on temperatures but this is charging in the same room at the same room temperature off of the same wall plug.

No joke at this point I'm charging slower with the 45w charger than the 25w charger.

Anybody wanna chime in here?

From the results I see here I do NOT see any reason to purchase this 45w charger at all. At the very most I saw a 7% gain when charging while the phones were off at the 25 minute mark.

Here is some actual data


25w Charger vs 45w Charger Phone ON


25w Charger vs 45w Charger Phone OFF


25w Charger vs 45w Charger Phone ON and OFF

 

[phillthedrill]

I've seen a lot of negative reviews on the 45 watt charger. I'm not sure why. I don't know if varies its speed on differing factors or not. I know a lot of people were complaining about spending the extra $50 and it either being slower than the 25 watt or it was only slightly faster....by a matter of minutes. You would think it should almost be twice as fast but it's not. I stuck with the 25 Watt but I'd love to know other's input as well and testing.

 

[rcobourn]

Try testing the relative time from say 20% to 80%. You should see a substantial improvement with the 45w charger. I think the phone heats up more with the 45w, so charges more slowly as it nears 100%, resulting in what you are seeing. The benefit of the 45w charger is getting a quick large boost, not in going from 0 to 100.

 

[AndroidRaven]

Lol no no what I'm saying is that the 45w charger has been slower than the 25w charger at all points of charging. I can understand throttling from heat and all that, and throttled from 80 to 100. This is just ridiculous though.

In 30 minutes I go from 0 to ~62% with the 25w charger.
With the 45w charger I barely make it to 54%.

 

[rcobourn]

Lol no no what I'm saying is that the 45w charger has been slower than the 25w charger at all points of charging. I can understand throttling from heat and all that, and throttled from 80 to 100. This is just ridiculous though.

In 30 minutes I go from 0 to ~62% with the 25w charger.
With the 45w charger I barely make it to 54%.

The 0 to 20 it so is no faster than the 25w. Just try the experiment I suggested. Or don't. If you don't see a marked difference, then you have a bad 45w charger, or some other issue.

 

[Sprov]

There is indeed a small difference, I own both 25W and 45W and from 0% to 50% the 45W is faster by a matter of few minutes maybe less than 5, while on a full charge is only 1 minute faster. Is not slower for sure. With the 45W charger I can also charge my laptop decently

 

[cdig]

yeah it's definitely not recommended for most ppl.

Just get another 25w for half the price.


At the very least the 45w option works for other stuff too like laptops, or ive used it to power my switch in a dock.

 

[skygear]

With most of these chargers. The only way to get a real figure is powering the device off. Then charging. Most of the older commercials were stating that the "device can charge to 1/2 full in 15min on fast charge." Then they would power off the device and charge it up. It was the commercial with the guy in a bar if I remember correctly.

With the device powered on, there are factors that could impact the charging speeds like energy consumption with process intensive apps.

I too have the 45w & the 25w. Don't like the size of it. Like they could have done GaN components to make it more compact. Been looking for a GaN charger that supports PPS. Not really coming up with anything. IF any of you want a 60w USB C PD/PPS & USB A QC 4.0 charger for the car 12v. This one is whatI am using. I integrated it and modified a Switch Blank . Charges the Laptop no problem. Charges the Note 10+ no problem.

Half the price. and the USB A is 18w too.///

https://www.usbgear.com/CGL-CCG3PAv3.html

This one has the enclosure already/

https://www.usbgear.com/CG-PD60PPS.html

On cool gears site, they claim QC 4.0 - Either way, 3.0 or 4.0, works ffor me

https://www.coolgear.com/product/usb-car-charger-board-60w-high-power-pcb-ccg3pa

 

[skygear]

Here is what I did to integrate it

 

[Nastrahl]

(deleted)

 

[anoopva]

Baseus 65W GaN Fast Charger with Quick Charge 4.0 3.0 AFC SCP USB PD Charger says support 45 w scp charging. I haven't tried though.

 

[AndroidRaven]

I will be posting charging results soon. Currently collecting some charging data

 

[skygear]

I will be posting charging results soon. Currently collecting some charging data

Still getting one of these. Disappointed that they skipped over the protocols for everyone else and stuck to Apple protocols and the standard PD. Size and output is a win still for me. Wont do PPS or any Samsung specific profiles. Still will do PD stuff so 45w will still do its thing.

https://www.kickstarter.com/project...rst-and-smallest-100w-gan-charger/description


Long and short of this whole "Which charger is better for the Note 10+" is this. - 45w PPS max is what it supports. Any charger that supports that profile should do the same thing. Size, dimensions, features, are the only other wild cards.

 

[moSess]

Here is what I did to integrate it

Your switch game is on level 5000

 

[p40403]

45W fast charging will start when the battery is below 30%
But there is also a starting condition is that the phone battery temperature must be below 30˚C,when it exceeds, it will drop to 25W
It is impossible to satisfy all conditions at the same time
However, it is not fully loaded with 45W below 30%, and the highest speed tested is only 36W

 

[skygear]

45W fast charging will start when the battery is below 30%
But there is also a starting condition is that the phone battery temperature must be below 30˚C,when it exceeds, it will drop to 25W
It is impossible to satisfy all conditions at the same time
However, it is not fully loaded with 45W below 30%, and the highest speed tested is only 36W

Did you you observe this with the phone OFF or ON?

---------- Post added at 11:43 PM ---------- Previous post was at 11:40 PM ----------

Your switch game is on level 5000

Appreciate that. I was lazy that day and did the whole thing with what I had in my pocket. My Leatherman Charge TTI KNIFE, A lighter, and a Glue stick. Imagine what it would have looked like if I used my real tools ??*?*??

 

[AndroidRaven]

Hello guys, here are some actual results from some data I collected. The 45w charger is a complete bust in my eyes unless Samsung releases some software update where they allow more juice to flow through, but at this point I think heat might be an issue. DO NOT, I repeat DO NOT purchase this charger, and if you did I hope you complain to Samsung and let them know through social media or reviewing the product. This 45w charger is a complete waste of money because having access to higher wattage matters nothing when the phone limits the wattage it allows to be charged at as heat becomes the limiting factor. You can get a 100w charger and it will make no difference with the heat being the bottleneck.

From the results I see here I do NOT see any reason to purchase this 45w charger at all. At the very most I saw a 7% gain when charging while the phones were off at the 25 minute mark.

Here is some actual data


25w Charger vs 45w Charger Phone ON


25w Charger vs 45w Charger Phone OFF


25w Charger vs 45w Charger Phone ON and OFF

 

[rcobourn]

Your 45w charger is defective.

 

[AndroidRaven]

Your 45w charger is defective.

Your comment is pointless towards somebody with actual data. This is real world data not YouTube sponsored video and YouTube reviewers that use phones that have zero usage. If you have data to share from your 45w charger please do so we can see, but don't just say your charger is defective.

 

[rcobourn]

Your comment is pointless towards somebody with actual data. This is real world data not YouTube sponsored video and YouTube reviewers that use phones that have zero usage. If you have data to share from your 45w charger please do so we can see, but don't just say your charger is defective.

Your charger is defective.