3s Li-ion BMS/Protection Board Testing

I have been asked about how I charge my Li-ion battery pack before. I made a video on that subject and put simply, I use a hobby balance charger. Using BMS or Battery Management System boards has come up in the comments. In this video I do some basic testing of a couple that I bought on Amazon. Now to be fair the red one is advertised as a protection board not a proper BMS and as a protection board it does an OK job. The second one, however, was advertised as a BMS though I would classify it as a protection board. Here are links to the boards though I wouldn't recommend buying them. 30 Amp Protection Board https://www.amazon.com/gp/product/B01J9BSJ80/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 20 Amp "BMS": https://www.amazon.com/gp/product/B071YNQF3T/ref=oh_aui_detailpage_o01_s00?ie=UTF8&psc=1 Don't forget to like comment and subscribe. You can also follow me on twitter https://twitter.com/Eman2000_YT