what does whr stand for?

kitmk · 04-30-2006, 01:42 AM

when it says battery pak and life: 71WHr, what does that mean in english?

Bobo · 04-30-2006, 01:43 AM

It means Watt Hours. The bigger, the longer the battery will last. Essentialy 71WHr means that if you were using only 1W, the battery will last for 71 hours.

kitmk · 04-30-2006, 01:49 AM

so how many watts will a laptop generally use?

kitmk · 04-30-2006, 01:50 AM

or should i be more specific?

Bobo · 04-30-2006, 02:06 AM

It will say on your charger, but generally around 20W. However, that does not mean that your battery will last 3.5 hours. Battery life is affected by what the processor is doing, and how much electricity the laptop actually needs.

This is how I understand it, but I am not totally sure...

Hairy_Lee · 04-30-2006, 03:37 AM

ive come across notebooks that draw 6 amps on a 12v supply (while also charging)
in this case thats a total draw of 72 watt, now obviously a lot of this is going to the battery but i think 20 watts is a fairly low value with this in consideration... if you're looking for values for a specifc notebook then you should check the manufacturer's information for that model; they should be able to provide you with the information you need

Bobo · 04-30-2006, 03:38 AM

Quote:

Originally Posted by Hairy_Lee

ive come across notebooks that draw 6 amps on a 12v supply (while also charging)
in this case thats a total draw of 72 watt, now obviously a lot of this is going to the battery but i think 20 watts is a fairly low value with this in consideration... if you're looking for values for a specifc notebook then you should check the manufacturer's information for that model; they should be able to provide you with the information you need

No, I'm just plain confused....I was thinking of 20V DC.

Ignore what I was saying...

04-30-2006, 01:42 AM	#1 (permalink)
kitmk Silver Member Join Date: Mar 2006 Posts: 137	what does whr stand for? when it says battery pak and life: 71WHr, what does that mean in english?

04-30-2006, 03:37 AM	#6 (permalink)
Hairy_Lee VIP Member Join Date: Apr 2005 Location: Plymouth, UK Age: 26 Posts: 2,553	ive come across notebooks that draw 6 amps on a 12v supply (while also charging) in this case thats a total draw of 72 watt, now obviously a lot of this is going to the battery but i think 20 watts is a fairly low value with this in consideration... if you're looking for values for a specifc notebook then you should check the manufacturer's information for that model; they should be able to provide you with the information you need __________________ Intel Core 2 Duo E6750 EVGA nForce 650i Ultra mainboard EVGA 7950 GT KO SC 512Mb w/ Zalman VF-900Cu 2Gb of OCZ GOLD XTC SPECIAL OPS Eition Notebook - Acer Aspire 9300 - Turion TL-60/ 2 Gb RAM/ Geforce Go 7600 128 Dedicated (400 Mb turbocache)

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04-30-2006, 01:43 AM	#2 (permalink)
Bobo banned Join Date: Nov 2004 Location: Pittsburgh Age: 18 Posts: 6,623	It means Watt Hours. The bigger, the longer the battery will last. Essentialy 71WHr means that if you were using only 1W, the battery will last for 71 hours.

04-30-2006, 01:49 AM	#3 (permalink)
kitmk Silver Member Join Date: Mar 2006 Posts: 137	so how many watts will a laptop generally use?

04-30-2006, 01:50 AM	#4 (permalink)
kitmk Silver Member Join Date: Mar 2006 Posts: 137	or should i be more specific?

04-30-2006, 02:06 AM	#5 (permalink)
Bobo banned Join Date: Nov 2004 Location: Pittsburgh Age: 18 Posts: 6,623	It will say on your charger, but generally around 20W. However, that does not mean that your battery will last 3.5 hours. Battery life is affected by what the processor is doing, and how much electricity the laptop actually needs. This is how I understand it, but I am not totally sure...