How to make a Li-Ion battery charger that can simultaneously charge four 18650 cells together. This charger is very simple to make and performs the work of a balanced charger by stopping the power to the individual cells after the battery gets charged completely.
The Mu Tags are tiny “loss prevention” smart-tags that track the location of the items they are placed on. Mu Tags even allow you to create safe-zones, so when a certain tag leaves the zone, you’re alerted immediately. Each tag is ridiculously small (the