I recently lost my collection of electronic components looking for a cheap source of parts I could use in their projects. It turns out that my old, broken uninterruptible power supply was a storehouse of useful components! Check out the video to see what I found inside. It turns out that I have everything you need to create a charger, audio amplifier, AC power and much more.
Charging current = 1.25 V / R
For example, I found 3 fuses placed in series gave me a resistance of about 7 ohms. 1.25 / 7 = 178mA. So the battery will charge with a current of approximately 178mA.
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