Like most electrical devices laptops have specially-designed
batteries and battery charges designed to use an exact voltage and
amperage and deviating from those values can be bad for the long-term
life of the device, but if you're in a bind or just want to study
electricity you can wire together a series of AA (or even AAA) batteries
to power your laptop.
Electronics weblog FunnyHacks
demonstrates in the video above how you can wire AA batteries to an
adapter plug that will plug into your laptop's power plug and provide
anywhere from 30 minutes to four hours of power depending on your
laptop's power load, how many batteries you're using, what kind of power
output those batteries have, and how you have them wired. You'll need
to a bit of calculation to make sure you have enough batteries to meet
both your minimum required voltage to power your laptop and enough
amperage to last long enough to get your work done using a mix of series
and parallel wiring setups.
Of course we're not actually
recommending you use this hack on your current laptop as it's possible
to short out your power supply or do even greater damage, but if you
have a still-functioning laptop that's over a decade old with nothing
better to do it may be an interesting project to try as it'll help
reinforce basic electrical knowledge and fits into the MacGuyver book of
"things I'd like to know how to do but not necessarily ever do them"
that many of our readers enjoy learning.
more info and video here
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