Inside a sealed Chinese Solar street light with Doppler detection.
14:41
Temu solar street light with generous solar panel & LiFePO4 cell
19:25
Autopsy on a badly designed solar light (no lithium charge control).
14:20
Por Que o Motor Elétrico Deste Jovem de 17 Anos é Importante
10:59
5000w solar LED street light
14:30
DIY sonar scanner (practical experiments)
20:55
The next generation COB LED? (Radical new style of bare LED chip.)
14:35
Which "Lithium" AA Rechargeable Battery is Best? Let's find out!
14:05