Welcome. In this video I disassemble this USB Doctor Voltmeter and Ammeter and switch the displays so the Red Display shows Volts and the Blue Display shows Current. You will need: 1. Soldering iron 2. Desoldering Wick 3. Soldering Flux 4. Soldering wire/tin wire Thanks for watching :)

Battery and Alternator Tester

Welcome. In this video I will disassemble this battery and alternator tester. At the end of this video you can find a picture that shows you all the functions of the lights. This unit is very handy to have and can be found very cheap, also there are other units like this with different shapes that works just like this one.

Digital Multimeter Battery Replacement DT9205A

Welcome. In this video you are seeing how to replace the battery of this DMM. You will need: 1. New 9V battery 2. A screwdriver

Homemade Sony Lithium Battery Charger

Hello,
in this video you are seeing a simple idea of making a battery charger.
You will need: 1. 1pc x TP4056 5V 1A Lithium Battery Charger Board Protection Module 2. A micro usb 5V phone charger 3. Cardboard or peg board or any thin material that can be cut easy 4. Hot glue gun 5. Soldering iron along with soldering paste and soldering wire/tin wire 6. Two small springs from pen