Battery power question? - Tilted Forum Project Discussion Community

deportes · 01-28-2008, 08:46 AM

I am using my laptop fwhile sitting in y truck via a power inverter, and connecting to the web via a city wifi connection, how long do you think the truck battery will last before I need to start the truck again.
The radio is off and no ancilliary stuff running other than the laptop.
Thanks.

allaboutmusic · 01-28-2008, 10:35 AM

A good power inverter should warn you before the battery gets too low.

deportes · 01-28-2008, 10:41 AM

thanks. i am googeling the question and I need to figure how many amp/h the laptop uses, not sure. May need to hook up a amp metere to find out.

allaboutmusic · 01-28-2008, 01:01 PM

Does the adaptor give any figures? Wattage for example?

deportes · 01-28-2008, 01:12 PM

Yes, the laptop adapter indicates 4.9A and 90W, what the calculation for amp hr I'm not sure. Thanks.

allaboutmusic · 01-28-2008, 01:22 PM

Lots of calculators on the web if you're rusty on your physics formulae.

http://www.bigfrogmountain.com/calcu...phourusage.htm

Redlemon · 01-28-2008, 01:59 PM

Just keep posting every half hour, deportes. When you stop posting, we'll know the answer.

allaboutmusic · 01-28-2008, 02:50 PM

Ha. Not quite true - he'll still have battery reserve power after that.

01-28-2008, 08:46 AM	#1 (permalink)
deportes Psycho	Battery power question? I am using my laptop fwhile sitting in y truck via a power inverter, and connecting to the web via a city wifi connection, how long do you think the truck battery will last before I need to start the truck again. The radio is off and no ancilliary stuff running other than the laptop. Thanks.

01-28-2008, 01:59 PM	#7 (permalink)
Redlemon Devoted Donor Location: New England	Just keep posting every half hour, deportes. When you stop posting, we'll know the answer. __________________ I can't read your signature. Sorry.

01-28-2008, 10:35 AM	#2 (permalink)
allaboutmusic Aurally Fixated	A good power inverter should warn you before the battery gets too low.

01-28-2008, 10:41 AM	#3 (permalink)
deportes Psycho	thanks. i am googeling the question and I need to figure how many amp/h the laptop uses, not sure. May need to hook up a amp metere to find out.

01-28-2008, 01:01 PM	#4 (permalink)
allaboutmusic Aurally Fixated	Does the adaptor give any figures? Wattage for example?

01-28-2008, 01:12 PM	#5 (permalink)
deportes Psycho	Yes, the laptop adapter indicates 4.9A and 90W, what the calculation for amp hr I'm not sure. Thanks.

01-28-2008, 01:22 PM	#6 (permalink)
allaboutmusic Aurally Fixated	Lots of calculators on the web if you're rusty on your physics formulae. http://www.bigfrogmountain.com/calcu...phourusage.htm

01-28-2008, 02:50 PM	#8 (permalink)
allaboutmusic Aurally Fixated	Ha. Not quite true - he'll still have battery reserve power after that.