Simplest solar light possible, using old phone battery.
37:02
Making cheap solar garden lights more interesting. (Laid back video.)
33:13
How to make an authentic Joule Thief.
24:52
Solar powered meteor light project.
14:25
Poundland "disposable" phone charger.
17:27
Garden Solar Light Supercapacitor Downgrade
22:41
DIY Solar Lights Project
14:11
Ne jetez pas les vieilles piles ! Un moyen simple de restaurer la batterie 1,5 V comme neuve
11:36