Hyperion AT&T Samsung Galaxy S II 4G 2 x Battery + Charger

alex72 · Nov 15, 2011

Just ordered at Amazon for $25. Batteries are 1800mah. Not many reviews but all are saying that there are NO boot loops and that they work with original back cover. My guess is that these are NOT NFC batteries. They should last at least as original battery. I'll update post when I find out.
http://www.amazon.com/Hyperion-Sams..._12?s=wireless&ie=UTF8&qid=1321308449&sr=1-12
UPDATE
I tested my Hyperion batteries and they have about 5% LESS juice compared to stock battery. Another gripe is that charger output is rated as DC 4.2V 350mA (but mostly performs well below) so because of that, in my case, it takes 6+ hours to fully charge completely discharged battery. Some people reported 4 hours to fully charged state so each to it's own. If you charge phone thru charger's USB output you'll get full 750mA charge.
Anyway, considering all positives, negatives and price, I'm satisfied with this purchase and this is viable option for I777.
Positives
- no boot loops
- same form factor
- charger charge stock battery as well
- price (2 batteries and charger $25)
- extra USB output outlet (750-800mA)
Neutral
- batteries hold close to stock (it was expected knowing that weigh and size of batteries don't differ much compered to stock)
- not NFC compatible (not much of use for NFC right now)
Negative
- slow battery charging (~350mA)
- batteries hold ~12% less then advertised (~5% less then stock battery)
- once it gets below 20% it drains faster. Especially true for last 10%.

Maybe it'll get better over time. If someone found a way to properly calibrate this battery to show full potential, don't be shy, let us know.
http://batteryboss.org/

UPDATE 2
See post #14!

dgold21 · Nov 15, 2011

I recieved these batteries/charger last Tuesday. The batteries work fine, seem to hold close to the same charge as the stock battery. Charger works fine with both stock and replacement batteries. No NFC. They actually seem just very slightly thinner than the stock battery, I'm certain they couldn't possibly rate a full 1800mah. Either way, I'm cool with it...between these two Hyperion and my two stock Samsung batteries, I have completely stopped worrying about battery life and I can enjoy my device.

alex72 · Nov 15, 2011

Thanks for heads up! I'm looking to have same experience with these batteries. And I'm glad to hear that charger works with stock battery as well.

dgold21 said:
I recieved these batteries/charger last Tuesday. The batteries work fine, seem to hold close to the same charge as the stock battery. Charger works fine with both stock and replacement batteries. No NFC. They actually seem just very slightly thinner than the stock battery, I'm certain they couldn't possibly rate a full 1800mah. Either way, I'm cool with it...between these two Hyperion and my two stock Samsung batteries, I have completely stopped worrying about battery life and I can enjoy my device.

alex72 · Nov 27, 2011

I can just confirm that everything previously noted above stands true. No surprises here.

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thefunks67 · Nov 27, 2011

So there isn't any extra battery life with this battery compared to the stock battery?

-Funk

alex72 · Nov 28, 2011

thefunks67 said:
So there isn't any extra battery life with this battery compared to the stock battery?

-Funk

No there isn't. At least I didn't notice.

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doantuankha · Nov 30, 2011

Does 1800mah hyperion battery last longer than the stock battery ?. What is the certain hour for that and btw mugen & hyperion battery which one is better ???. Mugen seems to be expensive...

alex72 · Nov 30, 2011

doantuankha said:
Does 1800mah hyperion battery last longer than the stock battery ?. What is the certain hour for that and btw mugen & hyperion battery which one is better ???. Mugen seems to be expensive...

Friend of mine got Mugen battery. I gave him one Hyperion for test purposes. He was so mad because they lasted the same. Man, if you wanna preserve same form factor and save some $ buy either stock or Hyperion. For me, there is no question about that.

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switters1 · Dec 9, 2011

I've been cycling between the hyperion batteries and my stock battery for the last few days.

I've noticed that my battery life drops twice as fast with hyperion vs stock. Has anybody else noticed this? Usage is the same and I'm running CM7.

Is this some weird calibration issue and the battery actually has more than is reported?

igotdez · Dec 10, 2011

I think it's the hyperion batterys, i bought one a few Weeks back but its 8% lesser battery life then stock atleast for me..

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alex72 · Dec 11, 2011

switters1 said:
I've been cycling between the hyperion batteries and my stock battery for the last few days.

I've noticed that my battery life drops twice as fast with hyperion vs stock. Has anybody else noticed this? Usage is the same and I'm running CM7.

Is this some weird calibration issue and the battery actually has more than is reported?

Yep. It takes 4-5 full charges to "properly" calibrate, but don't worry, it'll hold close as stock battery.
I updated my OP.

Sent from my SAMSUNG-SGH-I777 using Tapatalk

switters1 · Dec 12, 2011

alex72 said:
Just ordered at Amazon for $25. Batteries are 1800mah. Not many reviews but all are saying that there are NO boot loops and that they work with original back cover. My guess is that these are NOT NFC batteries. They should last at least as original battery. I'll update post when I find out.
http://www.amazon.com/Hyperion-Sams..._12?s=wireless&ie=UTF8&qid=1321308449&sr=1-12
UPDATE
I tested my Hyperion batteries and they have about 5% LESS juice compared to stock battery. Another gripe is that charger output is rated as DC 4.2V 350mA (but mostly performs well below) so because of that, in my case, it takes 6+ hours to fully charge completely discharged battery. Some people reported 4 hours to fully charged state so each to it's own. If you charge phone thru charger's USB output you'll get full 750mA charge.
Anyway, considering all positives, negatives and price, I'm satisfied with this purchase and this is viable option for I777.
Positives
- no boot loops
- same form factor
- charger charge stock battery as well
- price (2 batteries and charger $25)
- extra USB output outlet (750-800mA)
Neutral
- batteries hold close to stock (it was expected knowing that weigh and size of batteries don't differ much compered to stock)
- not NFC compatible (not much of use for NFC right now)
Negative
- slow battery charging (~350mA)
- batteries hold ~12% less then advertised (~5% less then stock battery)
- once it gets below 20% it drains faster. Especially true for last 10%.

Maybe it'll get better over time. If someone found a way to properly calibrate this battery to show full potential, don't be shy, let us know.
http://batteryboss.org/

I wish the battery capacity was the same as Samsung OEM battery. It seems much less than 5% lower capacity.

Since battery life and tracking is very important to me because it's the best indicator of whether things are working alright, I just bit the bullet and ordered the $30 OEM battery. I'll hold on to the hyperion batteries for travel and emergencies, but I'm leaving them out of my "rotation" (I like to avoid charging and just swap batteries every night).

Or if I'm going to play a CPU/GPU intensive game for 4-5 hours, I'll throw in the hyperion battery just to kill it

alex72 · Dec 13, 2011

switters1 said:
I wish the battery capacity was the same as Samsung OEM battery. It seems much less than 5% lower capacity.

Since battery life and tracking is very important to me because it's the best indicator of whether things are working alright, I just bit the bullet and ordered the $30 OEM battery. I'll hold on to the hyperion batteries for travel and emergencies, but I'm leaving them out of my "rotation" (I like to avoid charging and just swap batteries every night).

Or if I'm going to play a CPU/GPU intensive game for 4-5 hours, I'll throw in the hyperion battery just to kill it

As I told you before, battery life will improve after 5 full charges/discharges, unless you got bad batch. In that case you should exchange it for new ones.
I tested mine with Battery Monitor Widget Pro and 100% charge show 4188mV and 1% charge show 2940mV while stock battery goes down to 3022mV. So there is potential for Hyperion to last longer then stock but somehow it drains faster. If someone knows answer I would be glad to hear it. I would continue with calibration and testing and report back if there is any new findings. For now, they last 5-6% less then stock.
Anyway, first week of using Hyperion they lasted 20% less then stock so I bought same as yours stock battery with charger for $30 from Amazon. Stock is stock. LOL

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alex72 · Dec 15, 2011

Oh my goodness! Massive improvement! I mean huge! I was so stupid. The key was in deleting Battery stats in Recovery before Rom boots.
Follow these steps;
1. Power off the phone
2. Replace battery with fully charged Hyperion battery
3. Boot into Recovery by holding volume+, volume- and Power button. Release all three buttons when Galaxy S2 logo shows 2nd time.
4. Go to advanced and delete battery stats
5. Go back and restart the phone
6. Enjoy much better battery life

I will do proper comparison with stock battery when I get some free time. If someone do it before me feel free to post results.
My guess is that battery life improved somewhere between 10-20%!

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mcorrie1121 · Dec 17, 2011

So do you have to erase the battery stats for each battery? And how does that affect the stock batteries?

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alex72 · Dec 17, 2011

mcorrie1121 said:
So do you have to erase the battery stats for each battery? And how does that affect the stock batteries?

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I do. And every battery shows full potential including stock. It takes minute or two extra but reward is better battery life.

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Smoothface · Dec 20, 2011

alex72 said:
Oh my goodness! Massive improvement! I mean huge! I was so stupid. The key was in deleting Battery stats in Recovery before Rom boots.
Follow these steps;
1. Power off the phone
2. Replace battery with fully charged Hyperion battery
3. Boot into Recovery by holding volume+, volume- and Power button. Release all three buttons when Galaxy S2 logo shows 2nd time.
4. Go to advanced and delete battery stats
5. Go back and restart the phone
6. Enjoy much better battery life

I will do proper comparison with stock battery when I get some free time. If someone do it before me feel free to post results.
My guess is that battery life improved somewhere between 10-20%!

Sent from my SAMSUNG-SGH-I777 using Tapatalk

I have got a pair of these coming my way for christmas... I'll try what you said if I do not get good battery life. Sounds good though!

alex72 · Dec 20, 2011

Smoothface said:
I have got a pair of these coming my way for christmas... I'll try what you said if I do not get good battery life. Sounds good though!

I think that wiping battery stats will help with any extended battery, not just Hyperion. And don't forget to properly calibrate batteries. Fully charge/discharge 5 times.

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Alucardis666 · Dec 20, 2011

Seems like a sweet deal, thanks for sharing.

la5794 · Dec 23, 2011

Mine were just delivered and they do seem lighter than the stock battery. The charger is also nicer than the one I got the other day for a friends evo.

Thanks again for finding and sharing this good deal!

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Hyperion AT&T Samsung Galaxy S II 4G 2 x Battery + Charger

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