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Connected the peltier and fan to a 12v 10-14amp rated Kendrick dew heater controller. Works a little slower but does get down to 17 degrees from 30 after a while.
Each channel only provides a maximum of 6v. Does preserve the battery life.
The two critical elements in cooling appear to be thermal grease between the peltier, the heat sink and the cool plate/ pin and also insulation of the area of immediate connection at the peltier and cool plates. Isolation of connection of the two plates also is required with nylon spacers or nylon bolts.
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