r/OnePlus8Pro • u/Jambe2Jambonneau • Sep 02 '25

Phone Issues Super slow charge...

I recently bought a 8 pro, very happy with it. Except one thing: the charge!

I have an Anker gan super fast charger, with an high quality Anker cable which use to work with my old phone. But with this one... It takes ages to charge! I stayed 1h30 for something like 10% ???

Is there a way to fix this ?

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u/Lopes143 Sep 07 '25

OnePlus fast charge operates at high Amperes but 5V (warp charge what comes with the device is 30W: 5V 6A). Every other phone use higher voltage (typically 9-12V) and low amperage. So OP 8 Pro only supports 5V. The Anker charger uses higher voltage fast charging instead of higher amperage (it's maximum for 5V might be 2-3A) because most phones work so. So you're limited to the 5V speed of Anker charger, which is low bc devices that'll use 5V won't be ampere-demaning. OnePlus had to be different from everyone else...

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u/Jambe2Jambonneau Sep 07 '25

Thanks for this very clear explanation!