Charge 19.5V laptop with 19V battery pack
9951
Can I charge my laptop with a charger that has different specifications?
15992
Can I charge USB devices from a powered hub that isn't connected to a PC?
149633
Set specific USB ports to charge-only
83091
Draw power from a portable mobile charger to power circuits
36841
Generating high voltage (100V+) from 5V USB supply
87422
Powering 12V device from 5/9/12V powerbank
78058
Is there any option to store AC voltage?
68560
Is it safe to use a power supply with a different laptop?
34780
How can I limit battery charging to 80% capacity?
80449
DIY 24v to 5v usb phone charger
117034
Is it safe to use a laptop AC adapter with 220V power if the AC cable is not rated for 220V?
108486
Automatically limit (stop) battery charging at a given percentage
115689
Danger of damaging 13" macbook pro by charging it with 85w charger?
108482
Switch power supply/battery
117095
USB-C Chargers: Is it safe to charge a phone with a laptop's power supply?
10700
How to get more than 100mA from a USB port
23622
Charging lead-acid batteries?