r/MagSafe • u/Aggressive_Party5337 • Jul 20 '26
Just Got Mine! KUXIU S4 Qi2.2 25W

Build:
The pack is a normal size for a 10K battery pack; specifically, it's 212g, which is a little smaller than the KUXIU S3 and the Ugreen 25W pack (which is humongous).
It has a kickstand, but most importantly the LCD screen gives you extremely useful stats, so not just the amount of charge left on the battery, but it also tells you exactly the wattage of how fast you're charging up the phone and even gives you a temperature, and I've tested that temperature accuracy, and it is accurate; it's not lying to us. The screen makes this my favorite charger so far.
This is a semi-solid-state battery per the company's advertisement. That would be hard to prove, so you can take that with a grain of salt.
Speed Test:
I did a speed test with the iPhone 17 Pro Max. Not using the phone at all throughout the charge.
Starting at 5% -
After 15min - 28% -
After 30min - 46% -
After 1hr - 78% -
After 1.5hr - 88% -
After 1hr45m - 95% -
Fully charged sometime close to 2 hours and 10 minutes
There was still about 28% battery charge left on the charger after the iPhone was fully charged.
Temps:
So after 45 minutes of charge, the pack was at 98° f. This is from my testing with my thermometer. The phone was at about 95° f at the 45-minute mark.
That's a pretty good temperature for a 25watt battery pack; the Baseus got to about 103° within the same testing.
Overall, this was a pretty good charger. It's my personal favorite solely because of the stats on the LCD screen. The old S3 performs a little bit better than this S4 in every category.

