How a lead-acid battery works
4:02
Cell Phone Design
16:01
How A Car Battery Works - basic working principle
5:55
Energia Livre do Fio Terra 😃 A Energia da Terra / eletricidade errante
4:57
How Lead Acid Batteries Work: A Simple Guide
3:38
Light bulb filament
4:25
How a Smartphone Knows Up from Down (accelerometer)
14:41
How 3 Phase Power works: why 3 phases?
12:04