5
votes
Accepted
Must I reduce USB's 1A output to 450mA?
You don't need to reduce anything. The headset is designed with a particular internal battery that has particular charging specifications, and its circuitry will not take more than whatever it is ...
- 12.7k
2
votes
Accepted
I got this AC universal adapter for my laptop how to use it?
19.5 volts should work fine and will not destroy your laptop (19 and 19.5 volts are close enough to each other). 16 volts will work but charge the battery more slowly. Use the matched 19 volts. Make ...
- 50.1k
1
vote
Unplug or switch off AC outlet when laptop is not in use?
does unplugging the laptop have the same effect as turning OFF the
switch in the AC power outlet?
Yes, it is the same.
If you wish to have the AC Adapter plugged in and ON, then you need Battery ...
- 50.1k
1
vote
Unplug or switch off AC outlet when laptop is not in use?
Unless the switch is faulty in some way, it should be the same. You can verify this by having the computer powered on, then switch the switch to OFF and see if the laptop sees this as not charging or ...
- 61.5k
1
vote
Are these "slide-in" interchangeable plug adapters standardized/generic?
You have to assume no. While they would be standardized for that adapter's model, by the OEM (Lenovo and others purchase these from a 3rd party). There is no guarantee they get the same model every ...
- 73.3k
1
vote
Laptop touchpad response badly when on power supply?
It's a ground loop problem with Synaptics touchpad (Dell Inspiron 14 in my case), maybe related to a bad power supply. I'll edit this reply if other PSU fix the problem.
As some other people say, a ...
- 1,559
1
vote
What happens if I use lower amperage in "input"?
As long as the amps meets the device's minimum required to run, then lower amps generally shouldn't cause a major problem. For a laptop charger I could see it not having enough power to actually ...
- 14k
1
vote
How to find a compatible AC adapter for my external HDDs?
First option, search for "devicename devicemodel# power adapter" on ebay. You might find actual genuine branded used adapters for that exact device. You will also probably find 3rd party adapters for ...
- 191
1
vote
Accepted
Cannot charge laptop battery
It may be that the laptop's power manager is deciding that charging past 87% will be harmful to the battery's life. It also may be that the new battery is not calibrated yet and so it really is 100% ...
- 61.9k
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