Cant find a suitable laptop for basic use!!

[shijilt]

I have a good PC , need a backup laptop.
to keep turned on for hours to download large files.
and to browse internet when there is no power to run my main PC.
I have no intention to use a laptop while travelling.
Main concern in loooong battery backup. HDD is must.
there were my options.
Acer ES1-131 - 11.6",celeron 3050, 2GB, 7 hour, 18K (+RAM upgrade)
Acer ES1-521 - 15.6",APU A4 -6210, 4GB, 5-6 hour, 18K (+RAM Upgrade*)

Then I saw something that give more feature for the price that I pay!
Fujitsu A555 - 15.6", i3 5th gen, 8GB, 8 hour, 22K

What should I do ? Is Fujitsu good ? its bulky, cant find parts online.
Its way confusing.

If you know any laptop under, which give backup more than 5 hours (not in power-saving mode) please suggest. (should be under 30K and 35K if it has dedicated graphics)

 

[Minion]

HP 15-af114AU P3C92PA#ACJ APU Quad Core A8 - (4 GB/1 TB HDD/Windows 10) Notebook Rs.24990 Price in India - Buy HP 15-af114AU P3C92PA#ACJ APU Quad Core A8 - (4 GB/1 TB HDD/Windows 10) Notebook Turbo SIlver Color With Diamond & Cross Brush Pattern Online - HP : Flipkart.com

 

[omega44-xt]

This is the thread for laptops
*forum.digit.in/laptops-netbooks/

I personally think i3 ULVs will have better battery life. Check these:
Asus A555LA-XX2384D 90NB0651-M37020 Core i3 (5th Gen) - (4 GB/1 TB HDD/Free DOS) Notebook Rs.25990 Price in India - Buy Asus A555LA-XX2384D 90NB0651-M37020 Core i3 (5th Gen) - (4 GB/1 TB HDD/Free DOS) Notebook Glossy Dark Brown Online - Asus : Flipkart.com

Lenovo IdeaPad 100-14IBD 80RK002UIH Core i3 (5th Gen) - (4 GB/500 GB HDD/Windows 10) Notebook Rs.29990 Price in India - Buy Lenovo IdeaPad 100-14IBD 80RK002UIH Core i3 (5th Gen) - (4 GB/500 GB HDD/Windows 10) Notebook Black Online - Lenovo : Flipkart.com