Magic smoke! What happened to the JK-BMS? Still reliable or bad design?

After we saw some magic smoke from the JK-BMS in the last video (   • The JK-BMS 4S-8S Edition - World Premiere....  ), we want to find out what exactly happened and why the BMS exploded... but still works. After pulling just over 200A for only 5 min, one of the MOSFETs died when the BMS disconnected the current. What a scary moment! I really thought, that this is the end of the BMS! But hey, it is still working fine and nothing obvious happened. So let's open it up, sniff a bit around and see if we can find any suspicious stuff! Can the JK-BMS be saved? Take US$10 off if you spend more than US$100 in the Hankzor store one AliExpress. Use the link down below and the coupon code OFFGRID at checkout. JK-BMS 4s-8s Edition: https://off-grid-garage.com/battery-m... Please subscribe and join me on my journey of the Off-Grid Garage! For more information, please check out my website with links to all the batteries, materials, devices and products I have used in my videos: https://off-grid-garage.com The 'Buy me a Beer🍻'-link is here (on the website, scroll all the way down): https://off-grid-garage.com Thank you for your support! You can also click on the Thanks button under the video to support the channel. Thank you, if you have already! T-Shirts, caps, mugs and more in our merch-shop: https://off-grid-garage.com/merch **** These are the batteries you are looking for **** 🔋➡EVE LF280/304 LiFePO4 cells 3.2V/280+304Ah: https://off-grid-garage.com/batteries/ 🌞➡Solar charge Controllers, Inverters and accessories: https://off-grid-garage.com/solar-cha... 🔧➡Tools, Analysers and Testers: https://off-grid-garage.com/equipment/ 📈➡ Battery Tests and Results: https://off-grid-garage.com/battery-d... 🔌➡Batteries, charger and accessories: https://off-grid-garage.com/batteries-3/ ⚡➡Cables, Inverters and Electronics: https://off-grid-garage.com/electronics/ Get 5% off when buying Bluetti all-in-one Power Storage Products! https://off-grid-garage.com/bluetti/ Great "Next Gen" AOLithium Batteries (4000 cycles, Bluetooth, CALB cells) https://aolithium.com/?ref=offgridgarage The Sunfunkit DIY battery. Great product to build your own 12V battery. Use OGGA at checkout to get 6% off. Video Review:    • The Sun Fun Kit Experience. Building your ...   New to AliExpress? Use my referral code below to register and earn US$19 store credit. What a great start! https://a.aliexpress.com/_mrtR9Ux Take a live sneak peak at the Off-Grid-Garage in the Victron VRM World: https://vrm.victronenergy.com/install... My other YouTube channels:    / offgridgarageaustralia