New technology allows researchers to capture low temperature (below 100C) waste energy from batteries.
Researchers at Stanford University and the Massachusetts Institute of Technology have developed a method of recovering waste heat through a principle known as the thermogalvanic effect.
This principle – that the voltage of a rechargeable battery is determined by temperature – allowed researchers to use waste heat to recharge batteries, generating more electricity than was required to charge them.
Read more at Stanford University and the Massachusetts Institute of Technology