johnathon007
New Member
Im trying to build a TEC powered mini fridge/cooler and so far all has gone well but the TEC empties my battery to fast and gets colder then needed. What i want to do to fix it is put a thermosister in to limit the power when it is cold enough [around 40F] and raise power when it gets warmer. the battery im working with is a 6V like the ones found in kids cars its a 9Ah battery and i would like it to idle down to around 1-2 amps when its at ~40F [i think it runs about 6 amps just on the TECs internal resistance but cant measure because my multimeter is crap] on a side note the battery also powers a 80mm computer fan for the heatsink and a 40mm vga fan for the cold air circulation. I get around an hour if im lucky right now but id like to be able to bump that to around 2-3 or more if possible.