The weather right now is so bad and hot! A friend of mine runs a mobile stream and his phone refuses to charge when it is hot. His stream crashes because he can't charge his phone or it overheats. Not even shade helps! So I'm thinking about making something for him that would clip onto his phone while he is streaming. A fan might help. But I think a peltier module would work better?
This streamer has access to 12V 6A outputs from a buck boost convertor. He uses multiple 20k mah 5V ~3A battery packs during his cast that power the buck boost. I don't know much about these ... so I thought I'd ask. I think a heat sink is needed. But is a fan absolutely necessary? I'm not trying to freeze the phone. Just cool a spot on the back to a reasonable operating temp. Any other information or warnings you have would be great!