Okay folks, at the moment at 1-day, 1-hour, 7-minutes, and 17 seconds on the battery leaving me with 26 percent left (isn't fully calibrated). This is with 4g on all the way, NO wifi, heavy use: watching flash video, youtube, surfing, facebooking, bluetooth connected ear piece with medium I was also backing up and flashing roms an testing them out but went back to my original rom... every time i backed up or flash my percentage barely didn't change at all lol.
Keep in mind that I am on a Touchwiz stock based rom with kind of a overwhelming amount of features an mods and the battery life wasn't the best on it in the first place an at the same time not the worst. I also have a few motion features running. I believe you can get At least 2 and a half to 3 days easy on a single charge for those who use cm10 or aokp those open source type of roms because of how they burn much less than a touchwiz setup.
Zerolemon 6300 mah battery samsung galaxy s3 - YouTube
This isn't my video but it will show you what I mean when I say this guy is correct about the sides of the back cover being a tad bit flimsy... BUT the back cover/case overall fits snugly, its not like it will fall off the phone or anything of that nature. Yes it adds a great deal of thickness and is thicker than the other extended batteries out there that have less charge than this one BUT that is the trade you have to deal with if you want everlasting life lol, the thickness DOES add a few grams of weight to it AND a better feel to the phone an add more comfort when surfacing an texting with it on its side. Flat surfaces are hard to grab... look at a baseball bat, there is a reason for it being round in girth an not flat like plywood.
This is a great battery for anyone who is a trucker or anyone that takes very long drives, its a real weekend warrior as someone stated already. I'm confident on a single charge down here in florida i can drive to new york without charging along the way using gps and streaming music. Or just anyone who is a away from their charger for an ex amount of hours. I recommend it in that case.
The down side is that case options will be absent of you make this your daily battery, at the moment there isn't any cases or belt/pocket holsters for this an I seriously doubt any of those will come about. The back cover it comes with also acts as a case because it covers the sides of the screen acting as a lip so when you put your phone face down the screen wont be touching the surface. NO KICKSTAND... for those that care about that so you would have to find some alternative to stand up the phone to watch whatever.
Well that is my review, I wont be using this all the time but i also dont regret buying this since i will be taking long drives in the future an being away from a charger for hours at a time.
IF ANYONE can point me in the direction of a GOOD extended battery that can fit the extended seidio case with the kickstand. I have heard people are buying 4200 or 4000 batteries and they really aren't what the say, i really dont wanna get jipped!!!!
Thanks an take care.