There is a sticker on the box that says it is rated for 60 watts - at 12 volts.
The 4 Amp power supply will run it for some time - then overload.
-Joey
On Mon, Apr 18, 2011 at 10:38 AM, zgotts <[email protected]> wrote:
> Is it just me or does 5A sound like a lot of juice for a little cooler
> fan?
>
> A quick calc puts that at around 60 watts... For reference, a 3"
> computer fan draws around 0.2A at 12v, or roughly 1 watt. Unless this
> cooler fan has a 12" diameter and can provide a 30 mph breeze, I doubt
> it will be drawing anything remotely close to 5A.
>
> I'm leaning towards the theory that your 4A power supply is having
> other issues, causing you to think the fan is using that much power.
> I'd go ahead and wire it to the battery.
>
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