External battery for notebook

[Butlerjunk]

Hey guys,

I got a new laptop for Christmas as I need one for Uni. Since I'll need it for hours on end, I want to have an external battery to be safe. I have an ASUS UX305. I want at least 3 or so hours of it it, with a USB port for my iPhone. Ideally I don't want to be spending a fortune, but I can be fairly flexible on price. Any recommendations?

 

 

Thanks,
Jackson

[z0ne]

-snip-

It needs a 19 volt output, because that is the voltage needed to charge your laptop, the maximum rated amperage pull can be higher or lower than your adapter amperage rating.(about 2.4A in your case) A lower max amp will result in your laptop charging more slowly than normal, a higher max amp will result in your laptop charging normally. Your adapter is 45W max. Which means that if you get a battery that is 19V 90 WHr that has a max amp of 2.4A you will be able to charge it for at least 2 hours like you would charge it off the wall.

However a higher max amp and more WHr results in a pricier and bulkier battery.

So summarizing/TL:DR you have to get a 19v battery and it should ideally have a max output of about 2.4 amp. 

 

An example of a decent battery is this http://www.amazon.com/RAVPower-23000mAh-Portable-Charger-External/dp/B00HFMUBYG

The amount of Watthours is 115 mathematically (if the 23000mAh is at 5v) it is probably a little lower (because marketing) than that so say 90 Whr, this means you could charge your laptop for about 2 hours as if you would charge from the wall. 

At a 100 bucks/5 stars it sounds quite good. 

Do consider size/and type of output connector before you buy. 

 

If you want me to reply please use @z0ne / quote me

(This was typed in a rush, excuse my english )

Some more options (You still have to make sure they have the same connector as your laptop)

http://amzn.com/B00NBI1GQK

http://amzn.com/B00B45EOYS