I was not sure if I go by name i.e Star group or by user reviews..Thought of giving it a try to save 300 bucks and got mentally harassed.I had ordered a charger and after payment the order did not get processed inspite of many calls and Vague answers by the support staff.
Finally today got the Envie charger only to realize charger sent is a different model from the one ordered.Charger had rust on its points and packaging was open.Batteries too are lighter compared to the originals..Just leave it to my luck if they run fine else I have 1 yr warranty..