JUGEE battery teardown full size video.
37:04
Teardown of a faulty Samsung lithium 18650 cell. (2200mAh)
44:59
Reverse engineering of shady lithium button cell charger.
35:31
Modifying an old light with LED tape.
35:16
Testing Poundland's 2.1A dual port USB power supply. (with 2kV)
27:33
Excellently awful eBay trash (with schematic)
30:00
Using salvaged lithium cells to power LEDs directly. (with protection test)
28:21
Horrific USB power supply fault. (Electrocution risk.)
26:09