I recently ordered asus powerbank from flipkart.
And experience is amazing.
They delivered my powerbank with 24 hours without taking any shipping charges.
The packaging was also good
My product was delivered through flipkart advantage so I can even replace it if I want to do so.
In past one year ordered many times from flipkart they customer services are also good.
But I have to say sometimes I noticed that price on flipkart is very costly as compared to other e commerce like amazon snapdeal etc.
So I suggest other to check other websites also before buying from flipkart.