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.