-This Galaxy S3 Extended Life Battery is double the capacity of a standard S3 battery.
-A 4500mAh battery capacity means double battery life on the Galaxy S3: Perfect for power users looking for a little extra juice to get them through a day's usage.
-Features a Smart Charging Chip that ensures a even charge, giving you maximum battery life performance.
-Highly tested lithium ion battery cells designed for maximum battery life performance and longevity.
Please Note: Extended life batteries are bigger and slightly thicker than a standard battery. Most third-party phone cases will not fit with the extended battery in. We have Samsung Galaxy S3 Extended Battery TPU Protective Case available here.
IMPORTANT: Even when the phone says the battery is at 100% keep it on the charger 8-10 hours. If you do not, the phone will show that it is draining quickly.
-This is an extended battery and is thicker than a regular battery, your old back plate and cases will not fit.
-Quick Charge is not compatible with our extended batteries. They are high capacity batteries and require a full 8-10 hour charging time, each time you charge them. We don't recommend using Quick Charge, the high charging voltage may damage your battery long term.
-Compatible with the Samsung Galaxy S3 from all major US carriers
This Samsung Galaxy S3 Extended Life Battery requires a calibration period when you first receive it. Read our Galaxy S3 Extended Battery Calibration page to find out how.
How long should my Galaxy S3 Extended Battery last?
Our extended batteries are twice the capacity of your original battery. But in terms of actual hours, the average user sees about 8-16 hours more battery life than your regular battery. Other more battery conscious users have received 40+ total hours of battery life. It depends on charging habits and your smartphone usage habits.
Do these batteries support Quick Charge, or Fast Charge?
This extended life battery for Galaxy S3 is not compatible with Quick Charge, you need to charge at least 8 hours every time. Using quick charge could damage your battery long term.
How long should I charge my S3 extended life battery?
Depending on the size of your battery we recommend 9 to 10 hours of consecutive charging. If your battery is 4500mah or higher you would want to charge your battery for at least 8-10 hours. Even when it says that it is fully charged, keep charging overnight. If you don't the battery will show that it is draining quickly.
Your phone will take a little while to adjust to the new battery capacity. The phone will think that it is fully charged but it is not. The battery will slowly charge the rest of the way all night.
Is this Samsung Galaxy S3 extended battery bigger than a regular battery?
This battery is twice the capacity of a regular battery. To fit in all that power, the battery is slightly thicker than a regular battery. Your old back plate, and existing cases will not fit the new battery size. After a few days, or even hours you will adjust to the added weight.
Why is my Galaxy S3 extended battery not holding a charge?
The most common reason a battery doesn't seem to be holding a charge is due to the battery not being charged the proper amount. This is the reason about 95% of the time. The other could be a bad charger, a low-quality cable, or keeping your phone in a really high or really low temperature environment.
My Samsung Galaxy S3 battery has a bulge in the middle. What does this mean?
There are a few reasons for this. If your battery is over a year old, it could mean your battery is seeing its last days. If you’ve only had it for several months, it could be due to improper charging. If you are still within warranty, please contact us at firstname.lastname@example.org.
My Galaxy S3 back plate (back cover) is cracked. How do I get a replacement?
If your battery is still fully functional but the cover has cracked, please purchase a replacement back plate. If you just received your battery and the cover arrived broken or cracked within a few days of use, please contact email@example.com