View Full Version : Understanding mah vs ma?
tesco
10-20-2006, 12:17 AM
Was just wondering how do you figure out how long a battery lasts if the device uses 100ma and the battery is 600mah?
What is a mah? 600 milli-amp hours?
Virtualbody1234
10-20-2006, 12:30 AM
Yes mah is milli-amp hours.
A 600 mah battery can supply 600 ma for 1 hour.
or
A 600 mah battery can supply 100 ma for 6 hours.
Approximately.
tesco
10-20-2006, 12:56 AM
kool that makes perfect sense.
Can you explain kwh too? If a fridge uses 400kwh it's not really 400kw per hour is it :blink:
Virtualbody1234
10-20-2006, 02:26 AM
Yes. Kwh is kilo watts per hour.
1 kwh is 1000 watts consumption for a period of 1 hour
or
1 kwh is 100 watts consumption for a period of 10 hours.
Don't know about your fridge rating. Maybe yearly consumption or something? You better check that.
What exactly does the label say?
Seedler
10-20-2006, 03:05 AM
kool that makes perfect sense.
Can you explain kwh too? If a fridge uses 400kwh it's not really 400kw per hour is it :blink:
400kw per hour:lol:
Do you lyke, own a cooling station or something.:ph34r:
Virtualbody1234
10-20-2006, 03:09 AM
He uses it to cool his CPU!
Seedler
10-20-2006, 03:45 AM
He uses it to cool his CPU!
Pentium 7?:huh:
harrycary
10-22-2006, 10:04 PM
The compressor in the frig, particularly the motor in the compressor, would and could draw large amounts of current.
Electric motors, without a doubt, draw large amounts of current in any application or use.
This is why solid state devices, such as flash-based mp3 palyers, have a long battery life. Compare this to hard-drive based players which use up batteries much quicker.
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