battery life estimate

khaag · Post by **khaag** » Tue Dec 26, 2006 12:42 pm

how much time would a 9V alkaline battery power the N64 + Psone screen w/o LED mod?

daguuy · Post by **daguuy** » Tue Dec 26, 2006 12:47 pm

It wouldn't power it. It can't suply enough amps.

Krepticor · Post by **Krepticor** » Tue Dec 26, 2006 2:17 pm

try running at least four 9v in parallel

Post by **gannon** » Tue Dec 26, 2006 2:27 pm

That also depends on the efficiency of the 3.3V and 5V conversions to the board.

timmeh87 · Post by **timmeh87** » Tue Dec 26, 2006 4:46 pm

lets assume 100% efficiency

1.5A max on the 3.3v line ~= 500mA
600mA on the 5v line ~= 300mA

so around 800mA draw max from the battery. (which is pretty optimistic cause the overall efficiency is probably closer to 70% or something.) assuming it can source that current, then it will last maybe 40 or 50 minutes.

now, my personal opinion is that if it could source the current and your converters are more realistic, it might last 25 minutes. or something.

but as daguuy said, it cant source the current.

(oh, and thats for an alkaline battery. for a rechargeable one, divide the times by 4)