Adaptor to connect 12V fan to 12V battery

[Will King]

I need to run a computer fan to create airflow for a smale scale charcoal burner.

It needs to be battery powered so that I can use it in the garden.

I have bought:

This 12 V fan:
https://www.amazon.co.uk/Evercool-15mm-Long-life-Cooling/dp/B004ZS82R6

This battery:
https://www.amazon.co.uk/HQ-Universal-Sealed-Rechargeable-Battery/dp/B000W1V628

This charger:
https://www.amazon.co.uk/Plug-500mA-lead-battery-charger/dp/B000NVST72

The fan has a 3 wire, 3 pin molex connector. The fly lead from the battery has crocodile clips (red and black) for the battery end, leading to a connector with two prongs. This connector is visible in the photo on amazon. I haven't been able to establish its technical name.

Unfortunately, I am almost completely ignorant of electronics. Could anyone advise me how I might connect the fan to the battery? I have searched without success for a suitable adaptor.

Any advice gratefully received.

 

[FoxyRick]

On the fan, the three pins are Red = +12V, Black = Ground, Other Colour = Tachometer.

You do not need to use the Tachometer output - it is used on a PC for measuring the fan speed. Ignore it. Just wire up so that the Red fan lead/pin connects to +12V (Battery +) and the Black connects to Ground (battery -)

Personally, I would just cut the Molex connector off the fan leads and solder on some spade sockets that fit the battery.

Note that the charger will give a much higher voltage than 12V (maybe 15V) so you should not run the fan from the charger. It might be OK but more likely will shorten the fan's life.

 

[Will King]

Dear FoxyRick

Thanks ever so much your advice, which I will follow. I really appreciate you taking the time to answer my query.