Acer Aspire Esi -521 notebook is very best feature laptop I bought this laptop before 1 month.
Battery backup is good 6 hour standby
And 1 TB hard disk in this laptop
And 4gb ram and dvd drive and value for money amd a4 quad core processor is best performance for daily
Multitasking
No heating no hanging and silent fan in inside
You can buy Acer Aspire Esi 522 with flipkart only 18490 rupees it laptop very good working on internet and downloading is very fast this laptop specification is very best and money value low