For those willing to put some elbow grease into it, there is an almost unlimited supply of 18650 lithium ion batteries around for cheap (or free) just waiting to be put into a battery pack of some ...

Since heavy-duty trucks use two to four batteries connected in parallel to power 12- and 24-volt electrical systems, daily battery maintenance is a prime consideration. Using the common parallel ...

In Part 1 of the Electronics for Kids series, we looked at LEDs; in Part 2, we explored capacitors; and in Part 3, we took an in-depth look at electrical measurements. In this article, we will focus ...