I want to take a Raspberry Pi with me as wearable device so I have to attach a battery on it. The problem is that I fear the battery would explode some day thus destroy my body , just like Galaxy Note 7 for example. So what is the likelihood of explosion of the battery for Raspberry Pi on the market?

  • Asking for purchasing recommendations is not permitted per the help centre. – stevieb Jun 21 '18 at 13:37
  • @stevieb Okay, I will delete the last sentence for purchasing recommendations. I just need someone to analysis the likelihood of explosion for me. – Benjamin Jun 21 '18 at 16:34
  • Not related to the pi either. This is an electronics question – Chad G Jun 21 '18 at 22:01

Lithium ion batteries have ruptured and blown up or caught fire. They are also small and light. In other words, they have a high energy density. Other things with high energy density include hydrogen, tnt and wood. Batteries need to be able to convert their energy efficiently and quickly into electricity. So wood is safe, but makes a lousy battery.

It's actually extremely difficult to make a cheap, light, safe battery that lasts a long time. If you want safety, you'll need to relax your constraints a bit and consider heavier, bulkier alternatives that may not last as long. Even alkaline batteries explode but they may be safer. If you do choose lithium ion, choose the smallest one that meets your need.

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