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What do ppl use for their power supply for a dew heater, I've built one after a few goes at it but the problem I have is that it only works(heats up) if its connected to a 12 v car battery, is there a smaller battery I can use, rechargeable if possible, the problem with a car battery is that its gonna get in the way when I slew my scope, at least the battery for the fan goes under the ota, and sits inside the base.
Any help will be appreciated.
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