Running an outreach program, one of the tasks that I get to ask my student assistant to do is to clean up the outreach lab after we run a month of summer camp activities. This involves putting supplies back to their boxes, updating the inventory list so that I can find things around, sharpening all the colour pencils, and…checking whether the batteries are dead of alive. We order batteries in bulk for many of our hands-on electronics activities, and at any given time we probably have 100+ batteries in storage…
Obviously, our go-to is the multimeter (given that it is a physics lab…) and we go by the voltage of each battery, one by one. However, a friend of mine (Thanks Jone!) sent me the following video – a easy way to check batteries, and a bit of science (dare I say physics?) behind it.
(it’s an old video from 2013, but was recently picked up by Lifehacker)
Well, guess this will be a standard video that I will use as part of my student assistant training…!