Hey guys,
Welcome back to our channel. In the previous video, I had shown you how to make a DIY 12V 4P pack using Li-Ion batteries, in this one I am going show you how to upgrade that battery pack. I hope you enjoy the video. I'll see you again soon in another video.

#DIY #Li-ion #batterypack #batteries #3S #12V #18650 #portable #multifunction #upgrade

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