Converting battery Xmas lights to USB power – no soldering required

Converting your Christmas fairy lights from battery power to USB is simple and inexpensive – saving you loads of money on endless replacement AA batteries. And more convenient too, either plugging in a phone charger cable or rechargeable power pack. My replacement socket doesn't even need to be soldered, the resistor and wires simply twisting into place. At the end of the film, I've also included my slightly simplified calculations to arrive at my choice of resistor, for anyone interested in the maths. USB sockets are readily available from many online retailers, just search "Micro USB socket breakout board" and compare prices for the best deal. Timecodes: 00:00 Intro 00:20 Battery powered lights 00:34 Micro USB socket 00:39 The downsides of batteries 01:03 3V batteries vs 5V USB 01:17 Testing the current (optional) 01:34 Removing the battery box 02:17 Wiring the USB socket 02:39 The resistor - 56ohm 02:56 Preparing the wires 03:25 Attaching the resistor to the socket - no soldering required 03:46 Attaching the negative wire 04:03 Attaching the positive wire to the resistor 04:23 Testing the finished socket 04:59 Finishing touches 05:05 Heat shrink insulation 05:43 The completed conversion 05:52 The maths bit... 06:00 ...for anyone interested