Plug in charger in laptop before plugging in mains outlet
67432
Can connecting of AC adaptor first into device, then into mains pose a risk of voltage spike?
12515
Class II isolated power supply (wall wart) -- referencing the output to mains neutral?
24535
Check if device is plugged in
15992
Can I charge USB devices from a powered hub that isn't connected to a PC?
85152
Laptop power adapter output compatibility
155565
Do I have to charge my phone before I use it the first time?
2782
Can I safely charge my laptop with a non-standard, third-party charger?
11796
Does the charger consume power after charged device is disconnected?
34207
What is this socket/port/connector on my laptop?
24151
MacBook 2007 charger
139633
If I leave my chargers plugged into the wall socket at all times, do they consume energy or present a safety risk?
151905
Powering circuit directly from USB while charging li-ion battery side by side
146907
How can I avoid the battery charging when connected via USB?
141867
How does a USB 2.0 Wall Charger negotiate current output?
158851
How does ground mains work?
49431
What type of outlet is in the picture?
121888
Dell Inspiron 6400 indicates the wrong power adapter is plugged in and will not charge the battery