I plugged my phone into my laptop charger to see what would happen. My phone on 10% said “charge time 2 mins”. But then after a bit it changed to 45mins.
Does the phone somehow change the power of the charger to a more sensible power?
My phone has a fast charger which is usually “1hr” to fully charge.
In: 5
Electric charging has two properties, voltage and amperage. Plugging a device into a charger of the wrong voltage can damage it. Plugging a device into a charger of the wrong amperage generally works fine, although the device may charge faster or slower than usual.
If you are dealing with USB C chargers, they usually implement a technology called “USB PD”, which allows the charger and device to negotiate what voltage and amperage to use, based on the ones the charger and device support. A USB PD laptop power supply is capable of putting out high voltages and amperage, but it can negotiate a charging rate which is safe for your phone to use. On the other hand, your phone charger isn’t capable of putting out enough power for your laptop, so it mosy likely won’t charge at all.
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