Can I take my battery backup/energizer/secondary power source in flight?
75353
Are battery packs allowed in hand luggage?
34417
What kind of power management circuit do I need to embedded a rechargeable battery in my electronics project?
50787
Splice high current charge source into USB cable?
88469
Can I disable charging peripherals via USB?
143630
How do I power up the radio transmitter?
69584
What are the best practices for battery longevity?
78458
Does eSATA require power source?
54494
Can I bring my desktop computer as check-in baggage on a flight?
122969
How can I make my flyback converter discharge immediately?
21394
Laptop battery charge management
50952
What is *Cell standby* and how can I keep it from eating my battery?
108482
Switch power supply/battery
139633
If I leave my chargers plugged into the wall socket at all times, do they consume energy or present a safety risk?
52148
Interchanging battery with a higher capacity battery
156077
how to switch to backup battery when power fail?
146907
How can I avoid the battery charging when connected via USB?
109741
Batteries and fields?