My S4 won't charge when plugged into my laptop

[anon(7887939)]

I wanted to charge my s4 on my laptop but when I came back to check on it an hour later it had lost 3 percent is something wrong with my phone? It charges fine and quick when I use the adapter that came with it but doesn't work with the laptop. I have an HP Pavilion dv6 it's 2 years old if that makes a difference. Thank you for any help

 

[Golfdriver97]

I wanted to charge my s4 on my laptop but when I came back to check on it an hour later it had lost 3 percent is something wrong with my phone? It charges fine and quick when I use the adapter that came with it but doesn't work with the laptop. I have an HP Pavilion dv6 it's 2 years old if that makes a difference. Thank you for any help

My guess is that since the power output on a USB port is lower than your charger, you phone uses more energy than the USB port gives. For numbers sake, let's say your phone needs a minimum of 700 mAmps to charge, if your PC only puts out 500, you are going to discharge.

 

[srkmagnus]

You should be able to turn off the phone and let USB charge it via the laptop. It's an inconvenience; however, is an option for charging if you really need to.

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