Note9 charge with 25W/45W.

[RajRavi]

Samsung Note9 is not able to fast chage with Adaptive Fast Charger and the  service man outside told fast charge chip is not working.

However it's able to "fast charge" with Samsung 25W & 45W adapter. Is it safe to use high power chargers?

I see it's gettting hot. Till what temparature Is  safe to use for Note9  charging ?

 How can i know what voltage and current it's using for charging (Ampere app already used)

[RedDogRabbit]

Unless you have replaced the battery, don't mess with high speed charging.

Use the charging block that came with the device.

Try to increase the rate of charging, will only damage the battery further.

[Helenna]

Hi, Note 9 is compatabile with 15w charging. However, if you charge your device with 25w or higher it will be charged at the same speed of 15watt charging.

For the heating issue on your device, please follow the steps in the given link.

https://www.samsung.com/ca/support/galaxy-battery/charging-tip/