Those specs are not correct. I bought this from all4cellular when I first got my Note and there was only a negligible increase in battery life (it would be at 40ish% instead of 33ish%). It also led to more accidental reboots because the heavier phone would lay on the power button while I was sitting. I went back to the original battery after about a month, and haven't pulled that one out since.
Of course, this is a generic item, so they may have changed suppliers since then (about a year ago). But anyway, if I were you, I would go with a name brand battery supplier with specific reviews about that battery pack.
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