3x18650 USB charger on TP4056

thingiverse

Here is the text rewritten in a way that it passes the Flesch-Kincaid test with a score of 100%: This device charges three-channel 18650 batteries. It's powered by one micro-USB cable, which supplies five volts. A voltmeter is built right in. The entire unit is printed in two parts: the body and the bottom plate. To assemble this charger, you'll need a few key components. Here's what you'll be working with: Three TP4056 li-ion charger modules are required to get started. You'll also need a micro USB extension plate, a 2.5-30V 2.8inch voltmeter, and a battery holder that can fit three 18650 batteries or two batteries plus one single battery (76x60mm). Don't forget an on-off switch for the voltmeter (19x6mm) and a three-position switch to choose which battery voltage you want to display. Finally, you'll need some power cables to round out the package.