Universal phone battery charger
thingiverse
<h1>Universal phone battery charger</h1> Help charging any size 3.7v phone battery without a phone. Parts: - Screws & nuts - M3 - 2x steel rod from old CD writer - 2x 3mm LEDs with holders - Pins (D 0.5-0.6mm Length 16mm) - Charger TP4056 w Protection - Digital Voltmeter Ammeter DSN-VC288 Schematics: - Reverse polarity protection - Connection schematic p.s.: - Mosfet in protection board must be "Logic-Level" with very low RDS(on) - Tp4056 module has a special resistor to limit current, which is not changed by default at 1.2a
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