You do not need another cover to use this battery but it is a bit thicker than the stock OEM one. The back still slides on as easy as before and you will not notice it either.
I have conditioned the battery as Mugen suggested in their instructions... Charge phone 8-12 hours, use phone as normal, when battery is low, repeat for the first 4-5 charges..
I can report that if i used my phone moderately, i can get 3 days of use ( turning it off for 4-5 hours at night while i sleep)
If i leave it on and use it heavily, i can easily make it all day one day and night time on the second day.
In other words, it is DEFINITELY worth the money.
I have conditioned the battery as Mugen suggested in their instructions... Charge phone 8-12 hours, use phone as normal, when battery is low, repeat for the first 4-5 charges..
I can report that if i used my phone moderately, i can get 3 days of use ( turning it off for 4-5 hours at night while i sleep)
If i leave it on and use it heavily, i can easily make it all day one day and night time on the second day.
In other words, it is DEFINITELY worth the money.