https://stream.echo6.co/videos/watch/7c6989ab-d5b3-4323-b2b7-0a9099db060a Li-Ion batteries are very useful, but dangerous products, if we do not pay attention. I will show you a simple method to protect your existing 18650 Li-Ion batteries. And all for 40 cents! We will build protectors which: Interrupt charging if the cell voltage is above about 4.2 volts, Interrupt discharging if the cell voltage is below about 2.5 volts, Limit the maximum current to a few amperes, I show you in detail how you can integrate protection boards in the battery itself, Link: Battery protector kit: http://s.click.aliexpress.com/e/mqZ7yf2 TP4056 module: https://s.click.aliexpress.com/e/_DCFxkOf Supporting Material and Blog Page: http://www.sensorsiot.org Github: https://www.github.com/sensorsiot If you want to support the channel and buy from Banggood use this link to start your shopping: https://bit.ly/2jAQEf4 (no additional charges for you) Official Wemos Store: http://s.click.aliexpress.com/e/jUzBiIq https://www.facebook.com/SensorsIOT/ https://twitter.com/spiessa https://www.instructables.com/member/Andreas%20Spiess/ Please do not try to Email me or invite me on LinkedIn. These communication channels are reserved for my main job Wed, 15 Apr 2026 11:44:57 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/7c6989ab-d5b3-4323-b2b7-0a9099db060a All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.