Top positive review
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Seidio 3600mAh Test
on October 14, 2012
I needed a longer lasting battery than original 2100 mAh. After reading many forums and Amazon reviews on the subject, I purchased Seidio 3600 mAH battery + back cover above. Also purchased Hyperion 4200 mAh + larger back cover combo.
The Samsung 2100 mAh battery lasted between 10 to 14hours with mostly work related usage: phone 50%, email 25%, txt 20%, Internet 5% but NO games or movies.
Installed Seidio 3600mAh 4 days ago. After first full charge from state it was in when I received the item, I only got 13hours of battery life. Waited until battery fail to 5% battery left, let it recharge all night long until fully charged up. To my surprise, I got 29 hours of battery life on second charge. On third charge, I am already at 26 hours of battery life with 32% battery life left !!!
As far as the back cover is concerned, it is IMO the best extended battery cover out there. Great quality, looks great on GS3 and it allows a better phone grab than slim OEM cover without feeling bulky.
After reading previous Amazon review, I also had my doubts at first concerning the closing of Seidio back cover but found out very fast, the phone and cover had to be pinched harder than original cover in order to close perfectly.
From what I read, this battery needs to be completely discharge and recharged 4 to 5 times to get full battery power in the long run.
I do not think a bigger battery is really necessary. The idea is to get enough battery power to get through a heavy work day without having to look for charger in the middle of a phone conversation. For those who like to watch movies or surf the Internet intensely, a bigger battery may be what you are looking for. Will test Hyperion 4200mAh and review in coming days.
Also, and most importantly, GS3s are not made equal, some users have more apps, draining battery and running in background than others. I optimized my phone based on many reviews I read on Internet. I use my phone essentially for work related usage. So, battery test results may vary. I would like to insist on cover, being the best looking, feeling, quality out here. The Hyperion one feel very cheap.
FYI, the Hyperion 4200mAh also works with Seidio back cover. Make sure you pitch phone and cover well.