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What are some batteries for low temperatures (-70C)? Answered

I'm making a tiny space probe (pongsat) and I need to be able to keep the device powered at an altitude high enough for the temperature to be -70C to -130C. I am thinking that batteries rated for around -80C should be ok. Where can I find these kinds of batteries and how much would they cost. Another thing to make it worse is that it needs to be really small (size of a US quarter) and needs to provide from 3.3 to 6 volts.

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mpilchfamily
mpilchfamily

6 years ago

A battery that small will not have much capacity to it. What are the power needs of the project and how long does it have to last? A button battery isn't likly to do much for you or last vary long becuase of it's size.

Most probes are well insulated allowing the heat generated by the components to help keep things at a reasonable temp. Otherwise they install small heaters to keep the temp within certain specs. It will need to be well insulated anyway since it will reach high temps in direct sun light. I doubt you'll find a battery rated to work at that low of a temp. Temps that low tend to stop chemical reactions and kill batteries. So find the battery that will best suit all your other needs then plan in how to keep it at it's best operating temp.

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rickharris
rickharris

Answer 6 years ago

+1 always look to what others have done.