BMS (Battery Management System) || DIY or Buy || Properly protecting Li-Ion/Li-Po Battery Packs

Your SMD soldering skill has become so much better than your previous one. Appropriate amount of flux was given. Louis Rossmann would be proud of you.

Thank you for taking a look at my BMS design. I have a new version 4 that I am currently working on which removes the higher current drain on the cells to less than 1mA, the software is also more flexible.

Just FYI, your videos got me through a seriously bad time in my life and I am thankful for you. This hobby saved me and God provided!

I have been using the diy bms project for a year now. The work Colin H has done is great. Tied right in to my grafana setup.

Really pleased you got use out of my fork of the code and found the extra features of use. Thanks for featuring my channel and great video.

Perfect episode, I was trying to build my own BMS for quite some time, but everytime i failed. Thanks for the power od your chanel now I'm able to build one on my own :)

I like the way you present everything clearly.. Even a simple formula for all to understand.

I am a biologist, but your videos have taught me so much about circuit design. Thank You!

Its funny i was searching for these videos for the fist time about 12hours ago. and here you go making one basically as perfect a timing as you could.

Duuude lets see this BMS in action! Make a charger for lithium ion batteries next! That'd be so dope

When Scott does something he does so that it just looks perfect and nice.

For smaller projects I still like using a TP4056 wired parallel on each cell or cells of the series pack so for a 2P 4S I have one TP4056 on each 2P = .500mAh each cell x4 Chips using 4 separate phone chargers for isolation and you can use the single cell protection strips for unprotected cells so they shut down before under voltage. Cheap and works.

Loved the extra balls of solder (04:04) on the commercial unit straight from the store! So much for build quality control...

You are so clear in your explanation! Perfect! So DIY for powerwall, and commercial for small packs...

Fantastic incredible job I love these diy or buy videos🙃

Wow! I've just discovered your channel: I wish I'd found it before. Excellent in-depth stuff, well filmed and explained. Thanks.

Well that was unexpected! Great video as always. Thanks for featuring my channel.

I have been experimenting with these type 18650 packs for about a year now. I have built dozens. I use a fused nickel strip on most of mine now, all of them that have more than a few cells in parallel. I accidentally did short one while assembling it and all of the nickel fusable links glowed and melted, it was scary, but spectacular to watch, but it worked and potentially prevented a bigger problem. I just tested the cells and put new fused nickel strip on the top and it was good to go. I wish I had had a camera running. My point is that they are, in my opinion a worthwhile safety feature and insurance policy. For batteries in buildings, I have been building metal boxes for the batteries in case of fire. I do not have such charging and power draw as most of mine are working for small solar power collection and lighting backup. For me, heating of the batteries and thus needing to cool have not been issues. Every once in a while, if I have my thermal camera with me, I will look at them and see if any of them are heating, as they fail they get warmer when heating or cooling. I made some of my first packs from very old salvaged cells as those cells were very cheap to practice many of those cells were on deaths door, so I got to see failure modes. It is a pain in the neck to dissassemble a pack for a failing cell, so I try not to use cells that are too close to failure. I have taken to adding load disconnects and do not charge mine above 4 volts as I am dissatisfied with the BMS performance of the Ebanium and Amazonian varieties I have tried. I would like programmable LVD and HVD, but it seems that unless you build your own they are made out of unobtainium.

Scott, you are the best I ever seen about electronic modifies. I want to be great at understanding electronic devices like you.

Wow! Very creative indeed dude. Your video tutorial (electronics) is the best i watched so far. Every information of the components, schematics, mathematics, technics are all there making it a stop learning experience. Some words i might miss due to accent but its not a problem. You are imperfectly perfect. Thanks and stay creative.😀