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I've been thinking about doing the same thing but am worried it will explode on me. Are there any tips you have for starting out or mistakes to be sure to avoid

• monkmartinez 5y ago
  This is exactly what I did. I wanted to learn DC circuits and battery technology and I did that in spades. Batteries are really simple, just need to respect them. If you are going to use recycled batteries, I suggest you buy a Opus c3400 tester. Run them through a complete charge/discharge cycle to identify capacity and bad cells. If they get hot, take them out and properly recycle them at Autozone. Otherwise, write down the capacity on the cell. You can use repakr once you have 100 cells or so. I went with a 13s6p configuration for a 48volt system. I learned a ton from Micah Toll's DIY Lithium Battery book. Also, register at Endless-Sphere and start reading. Eventually the information will coalesce and you can start to buy bits and bobs. Take your time and don't rush buying right away... lots to learn.
• R0b0t1 5y ago
  There's usually no explosions, they burn vigorously. But before that they get too hot to hold. Cell management requires thermal cutoffs for this reason.