Portable Vacuum Cleaner Upgrade

We will "slightly" modify the battery and charging of a portable Vacuum Cleaner.For this we need:1. Li-Ion 18650 batteries x3 (unprotected cells)2. TP4056 charging board - http://ift.tt/2jioHXv. Some wires, soldering iron, solderMy parts cost was ~13$. Let's have a...
By: FireSword

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