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has anyone tried the hyperion aftermarket batteries?

I have them, they work fine but at 1800mAh didn't seem to give me much more battery life vs. the stock 1650mAh battery

Agree with that. They work fine (make sure you get the ones made for the AT&T GS2 SGH-i777) but I would also agree that I don't see a significant increase in battery life over the stock Samsung battery. It is nice though to be able to just swap the battery out when you want. The charger works fine with either battery.
 
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Agree with that. They work fine (make sure you get the ones made for the AT&T GS2 SGH-i777) but I would also agree that I don't see a significant increase in battery life over the stock Samsung battery. It is nice though to be able to just swap the battery out when you want. The charger works fine with either battery.

My same thoughts, I just plopped in my first one the other day and it is similar to the stock batteries in terms of life, but the charger and spare batteries being so easily portable I can stash them when on trips and not have a bulky phone, a quick swap will always have my phone at full charge while the backup battery charges :) So for the minimal charge I thought it was worth it!
 
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i believe some people are complaining of boot loops with these batteries, but that may be from the old stock.

they charge when in the phone... but i have noticed that on the first charge, the battery drains a bit faster. the phone was idle for 80 minutes (screen not turned on, no wifi, 3g, or anything major running in the background) and i lost 7% battery life. original battery would lose probably about 1%-2% in that time. also, it took about 2 1/2 hours of me leaving the LED flashlight, screen at full brightness, and wifi on to drain to 5%. that's not terribly bad at least.

will wait for 3-4 more cycles to see how it all works out.
 
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i believe some people are complaining of boot loops with these batteries, but that may be from the old stock.

People were getting the boot loop because they bought the i9100 batteries as the AT&T and international version are very similar. The i9100 batteries work (as far as I know) but will cause a boot loop if you try and charge them in the phone.

The Hyperion batteries made for the AT&T SGS2 can be charged in the phone or in the charger.

My only issue with the batteries, even the stock Samsung, is they take forever to charge from near empty to full so having a backup or two is nice as throw one in the charger and use the other.
 
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it takes less than an hour to charge the phone from 5% to 100% if you use the OEM adapter/micro usb.


Good to know!!! I hate how long it takes to charge the stock battery. I can shut my phone off, let it charge for 30-45 min, and it'll still only be 50% when I turn it back on.

I got an amazon gift card for my birthday, so I went ahead and ordered this last night. :)
 
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spoke too soon.. takes a little over an hour to charge with the usb micro cable. sorry.


Fast charging rates are murder on these types of batteries and will shorten the life dramatically. Best to use the factory charger for overnight charging if you can last that long, and reserve flash charging from your usb cable to your laptop judiciously.

Got a link to that ebay battery deal?
 
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Fast charging rates are murder on these types of batteries and will shorten the life dramatically. Best to use the factory charger for overnight charging if you can last that long, and reserve flash charging from your usb cable to your laptop judiciously.

Got a link to that ebay battery deal?

no, well yes.. but i bought them on ebay via auction.

http://www.ebay.com/itm/270891986961#ht_500wt_1156

and i don't know if it's me only, but i think the battery holds up well when idle.. but when i'm using the phone, it seems to drain faster.
 
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ok i'd just like to warn some people that if they buy this battery, the capacity should be about the same as OEM, but for whatever reason.. i think it burns power faster, and i realistically only get 60%-65% of the regular OEM battery life.

i would not recommend these batteries, especially if they will cost you $25.
 
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