USB Phone World Posting Page
Wednesday, March 9, 2011

It is certainly that every consumer electronic product has internal resistances and the performance is hard to last long enough than the theoretical value. In the process of charging and resting, how much power energy has been used up by AC adapter and other consumption devices as well?

When we have installed laptop battery into the notebook, it seems to reduce the charge rate rapidly due to high pressures in either part. Normally, the higher output voltage born with laptop AC adapter is useful for reserved requirements, but lower-capacity one will also be not enough when they need more power energy.

A few minutes after power off, laptop charger is hard to stop working completely. After all, some components inside laptop system should store the changes and update in this terms while they come to close later than LCD screen and indicator lights. So is protection circuit inside AC adapter.

Especially when outlet is still available, even if notebook has shut down for a long period, there will be external power supply come to the adapter and self-discharging occurred thereby. In my point of view, if possible, this kind of consumption should be avoided by unplugging the pin or switch. Otherwise, internal resistances grow up and actual capacity reduces rapidly.

Some effective ways are necessary to test the self-consumption of AC adapter. Such as universal meter, these tools can figure out the output and input power of sole Li-ion cell. For both plugged or unplugged, actual current is obviously in the screen of meter.

Of course, as AC adapter is not a definitely resource of external power supply, it is impossible to consume when there’s no supportive device or outlet available. That is to say, as long as we can control both sides completely, laptop AC adapter will avoid useless harmful discharging and then it can keep the performance longer and longer.

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by: USB Phone World