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glassdoctor · 08.15.2006, 10:55 PM

For the fans, it's just a matter of watts.... the basic formula watts= volts x amps tells you what you want.

Fans will be rated either for 5v or 12v, at whatever current level (ma).

For example, 220ma at 5v is different from 220ma at 12v if you are wondering what the drain is on the battery. 220ma at 12v is over twice the watts as the 5v...

A 5v fan should have a higher ma rating than a 12v fan if they have a similar airflow output... similar design, etc...but the power consumption in watts would be similar in theory.

Hope that makes some sense... ;)

	(#22)
glassdoctor TEAM FUSION Offline Posts: 2,041 Join Date: Jul 2006 Location: Iowa... Hawkeye country	08.15.2006, 10:55 PM For the fans, it's just a matter of watts.... the basic formula watts= volts x amps tells you what you want. Fans will be rated either for 5v or 12v, at whatever current level (ma). For example, 220ma at 5v is different from 220ma at 12v if you are wondering what the drain is on the battery. 220ma at 12v is over twice the watts as the 5v... A 5v fan should have a higher ma rating than a 12v fan if they have a similar airflow output... similar design, etc...but the power consumption in watts would be similar in theory. Hope that makes some sense... ;)