Not the one in the picture
Sorry, but if you are thinking of adding the fan in the picture, to your primary, and powering it off a battery, you will need to think again.
The fan that is shown in the picture requires an input voltage of 220-240 volts AC. It is not designed to (nor can it be made to without expensive converters $40-$60) work off battery power.
Batteries of the the type you probably are considering produce 12 Volts DC. The cost of converting this to something that would run the fan would outweigh the cost of buying a DC fan (from somewhere like JAYCAR Electronics) that is designed to run off DC power.
Best leave that fan to its resting place in your garage.
Regards
Scott
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