Qi2 chargers

The MagSoft cases for the Samsung Galaxy S25 Series phone have just recently come out. Problem some people are having with using Qi2 charging of the Galaxy S25 Series is finding a charger that allows the MagSafe case to lie flat on the charger. When I checked a couple of Qi2 chargers, the bottom camera lens was too close to the Qi2 charging magnets and prevents the case from lying flat on the charger. This results in only being able to charge at 7.5W.

Yes, if you want to 'super charge' your Galaxy S25, you would connect it directly to a 45W or bigger charger, but lot of people, like me, are looking for something that can 'fast' charge our phones, earbuds, and smartwatches at the same time. 

Did the 20w remain constant during a long time? What cases did you use? How thick were they? 

The charge fluctuated between 20W & 21W all through the charge.

I also purchased the "Anker MagGo iPhone 16 MagSafe-Compatible Wireless Charger Stand, 15W Fast Magnetic Wireless Charging Station, Qi2 Certified 360° Charger" that only does Qi2 charging. It's just a Qi2 charger, doesn't have a cooling fan like the ESR, and the magnets don't feel as strong as the ESR charger. It takes about between 30-45 seconds to kick into Qi2 charging, and fluctuates in the 20W range all through the charge.

It's on the night stand on my wife's side of the bed so she can throw her Galaxy S25 on it when she goes to bed.

Thanks. I asked about the cases because that seems to be what's preventing me to reach 15W with my s25 ultra. I have as ESR qi2 car charger, without cooling fan. Without case, after finding the sweet spot where alignment is just right I also get 20W to 21 W, measured with a usb meter placed between the power adapter and the ESR. However, with the 2  cases I tried so far I only get 12W. I'm now using the spigen tough armor which is around 3mm thick. The previous case was also thick. Which case are you using?

I did wait a while, and indeed th power starts low and in less than a minute it reaches 12W or so, then stays there. Like I said, if I do it without a case I do get 21W from the ESR, so the problem is not the power adapter I'm using I'm the car. 

I notice all the cases you tried are slightly slimmer because they have a raised edge around the cameras. The spigen tough armor I'm using is completely flat and about 1mm above the cameras. I will try another case from spigen. The ultra hybrid is great, but I want one with a kickstand so I'll try the ultra hybrid s first.

The Spigen case I use is thicker than the TAURI case my wife uses. My Spigen is flush with the lenses on my Galaxy S25+. The TAURI case is thinner than the Spigen case, and we don't have a problem with either on either of our Qi2 chargers.

I'd check connecting the ESR Qi2 car charger with a 45W or higher power supple inside the house to make sure it's not the charger.

I received the spigen ultra hybrid and it works! I get 21 W from the car to the ESR charger, and according to accubattery the phone charges at 12W (4V, 3A), so problem solved, I'm returning the tough armor.

I had to give up the kickstand. The spigen ultra hybrid S case has one but it's even thicker than the tough armor and, without surprise, not advertises as qi2 ready.

Thanks for your help.

My phone also does that after some time, maybe 10 minutes, with the ESR Qi2 car charger. It goes from charging at nearly 15W to about 3W, and the charger goes from drawing around 21W from the car to 9W.

So, qi2 works as it should in the sense that the charger adapts to the phone charging conditions. If the phone would stay cool, charging would go on at 15W.

So I just ordered the ESR Qi2 car charger with a cooling fan and we'll see how long it can go without overheating the phone and throttling. In my case, throttling happens when the phone reaches 40-41 degrees Celsius, according to accubattery. I'm hoping the airflow prevents the charging pad and the phone from reaching those temperatures at least for an hour or so.

Just saw the video. As most reviews it's pretty useless with regards to the charging speed, it only shows they charge, which they all do. Also, having a switch that you turn off manually when the phone gets hot is really a pain and completely against the logic of adaptive QI2 charging.

I replaced my ESR with the cryoboost version with a cooling fan, and it does make a big difference In how long it can charge before it overheats. I also checked that once the phone reaches 41 degrees celsius charging slows down and the phone cools quickly  (the fan really works), and the charger goes back to 15W charging. It's a great charger, I get around 60% charge per hour with my s25 ultra 5000 mAh battery.

The only thing I could not figure out is why sometimes charging starts at 15W right away, and sometimes not. I'm sure it's the phone that "decides" that and the charger only follows, but if it's not temperature related it must be the power management in the phone. Asides from that, I'm pretty happy with the ESR Qi2 cryoboost car charger. The fan is really quiet, by the way, really hard to hear it especially with the car noise, and the mount system is better than those in the video, IMO.

I'm pretty much gathering that from things I've read. Apparently it has an official product page back when it was teased but that page has since been deleted off Samsung site. Could just be rumor though.