Where should I buy a good replacement battery Dell Inspiron 15R


Oct 3, 2014
Hey, well my topic kinda tells the story
Im looking for a replacement battery for my Dell Inspiron 15R(5520).
I intend to keep him for the next couple of years untill I graduate my Bsc so I dont wanna invest too much money on it - therefore the original dell battery is not an option..
I was searching the web for days but only saw two good manufactors - Dr.Battery \ Max-Capacity.

Can anyone please suggest me where I can find a good manufactor \ reseller ?
I intend to buy online.