My phone can charge up to 33W with the original charger but only 12W with this one. Apparently this charger doesn't support Fast Charge 3.0, which Anker advertises as "compatible" with its powerIQ 3.0. It might have something to do with the voltages it handles, but I'm not sure. It might be ok to charge laptops, Apple products, or other special PD (Power Delivery) devices, but it couldn't charge a phone that normally uses Qualcomm's 3.0 fast charging. I'll leave the ampere application image, I used Samsung's original 100w high power cable, and a few other cables gave the same results, so the cable wasn't closed. I also tried both ports and the max speed I had in the app was around 2300mah on a low battery, while other cheaper ugreen car chargers got me 4000mah of peak power while my original was a full 33w wall charger up to up to 5700 mAh per app. I don't recommend buying a charger that explicitly supports Fast Charge 3.0 or higher, at least for regular Android phones or Android tablets.
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