Topic: Powering a laptop

[creekfreak]

Ok, a little confused here. I have a new Gateway Laptop, says is runs on 19v DV in, but the battery it runs on shows 11.1 volts 3800 aHm. I think this battery will work?

http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=172 4000ahm, 10-12 volts..should work correct?

[caymanreview]

my picturebook a/c adapter is 16v, but the battery is also 11.1v like yours

when i run that pack into the a/c input, i HAVE to have my stock battery in the laptop for it to even work. so when i run that pack into the a/c input it is actually only charging the stock battery

and that doesnt really have enough current to put a charge to my stock battery while i was running it. just prolonged the life a little i guess

if your lappy will run without its stock/internal battery it should work ok...

[creekfreak]

I see, internal batteries operate at one voltage, the AC input operates at a different voltage, so going in the ac port with a power back will require 19 volts for it to work with out the internal battery? correct?

[creekfreak]

wonder if this one would work?

http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=986

[jk labs]

I see, internal batteries operate at one voltage, the AC input operates at a different voltage, so going in the ac port with a power back will require 19 volts for it to work with out the internal battery? correct?

Observe that the internal battery voltage stated is the _nominal_ battery voltage. At the end of a charge cycle the voltage on the internal rechargeable battery will be significantly higher than the nominal value.

In addition, the laptop needs a few additional volts on the external supply to overcome cable losses, reverse voltage protection devices, fuses, charge current measuring devices, voltage monitoring devices etc.

All this to secure a rapid charging of the internal battery.

I.e, just what a given "19 Volts" laptop is willing to provide of useful services when fed a meager 12 VDC on the external power port, I somehow doubt can be inferred from the technical spec sheet alone :-).
 
Jon

[creekfreak]

I don't know jack about power and batteries, wish that I did....they do sell a 19.2 volt battery pack, that one might work better I would say.

[caymanreview]

im not sure how your specific laptop will work without the internal

mine requires the actual stock battery to be used to even turn on and operate, even when using the wall wart

i would think that other link you posted would be great, it would help charge your internal to give you significantly longer runtime...

your laptop might operate without the actual battery in it though, but i know mine will not

[creekfreak]

tried it, works on ac with out the battery

[kindms]

Just grabbed a 2nd N-Charge off ebay. I was supposed to have before Bonnaroo but the guy screwed up the shipping. I am glad I got the f-ing thing just need a festival to use them

My point to this post is keep your eyes on ebay. the Valence N-Charge batteries have been popping up for at least 100+ of retail. The new N-Charge series is supposed to be sold by Best Buy.

[C.Clark]

Just grabbed a 2nd N-Charge off ebay. I was supposed to have before Bonnaroo but the guy screwed up the shipping. I am glad I got the f-ing thing just need a festival to use them

My point to this post is keep your eyes on ebay. the Valence N-Charge batteries have been popping up for at least 100+ of retail. The new N-Charge series is supposed to be sold by Best Buy.

i saw one of those the other week, pretty expensive the store from what i remember, i need to find a cheapportable battery for my toshiba, im thinking about goin 24 bit with my mme

[Electric Cowgirl]

Also watch ebay for Electrovaya Power Pads.  These LiION batteries run longer than the N-charge (especially the 120 and 160 models).  They can be had for 150-200$ on ebay.  I swear by mine.

[kindms]

Just grabbed a 2nd N-Charge off ebay. I was supposed to have before Bonnaroo but the guy screwed up the shipping. I am glad I got the f-ing thing just need a festival to use them

My point to this post is keep your eyes on ebay. the Valence N-Charge batteries have been popping up for at least 100+ of retail. The new N-Charge series is supposed to be sold by Best Buy.

just realized that should read -100 off retail on ebay

[C.Clark]

i just got the 19 volt universal battery from batteryspace today and im testing out how long the
run time is on my toshiba, thank god one of the plugs fit, i think im gonna pick up another and i
wont have to worry about power at the show.  thanks for the link creekfreak, +T, i would have never
found it.