DIY Battery Charger with Dual USB 5v 1A & 2.1A - Amazing Project Parts

Make a Li-Ion battery charger or powerbank for just $4. You can use one or multiple batteries in parallel to make power banks. Works great and is easy to use. This is a safe way to charge your 3.7v Li-Ion batteries (18650 cells like the ones I have salvaged for free). Great for many project ideas including portable battery packs, cell phone charger & much more. This video highlights another awesome project part that has many built in extras. It has a step up converter for dual 5v 1A and 2.1A output; perfect for most cell phones. It comes with integrated protection to prevent over-discharge, over-charge, overload / short circuit protection, over current protection and over temperature protection. Plust there is a built in LCD panel to display the status of the batteries. This video also helps to compare the use of another popular charging board that I have used allot; the TP4056 with protection. Video references included (good for extra reference & how to): This IS NOT a sponsored video. This is an overview of a part that I love to use in projects so I wanted to share this information with you. I hope you enjoy. WARNING: Li-ion batteries can have quite catastrophic failures if they are not handled properly. In addition to the warnings in the video make sure to do some extra research on your own if you are not used to working with these types of batteries. Key notes: do not puncture, crush, short or otherwise mishandle the internal cells of battery packs. Fire...