Receive up to 94% of additional battery life
- Exclusively designed for the Samsung Galaxy S21 Ultra
- Case over doubles your S21 Ultra’s battery capacity
- The world’s most powerful battery case
- Full enclosure of your S21 Ultra for maximum protection
- Hard shell protective case with soft silicone sides
- Raised bezel surrounding the phone’s screen
- Case constructed of rubberized material
- On and off button on the back of the battery case
- LED lights on case to display status of back-up battery
- High quality lithium polymer battery designed for 500+ cycles
- Full Manufacturer’s Warranty & Free Shipping
- Available in Black
AMP Cases is proud to introduce the world’s first battery case designed exclusively for the all new Samsung Galaxy S21 Ultra! Our newly designed Samsung Galaxy S21 Ultra Battery Case features a built-in 4700mAH lithium polymer battery for up to 94% of additional battery life on your Galaxy S21 Ultra.
Raised Bezel! This hard shell protective case with a raised bezel full encloses your Galaxy S21 Ultra to offer maximum protection for your phone. The raised bezel that surrounds the phone’s screen prevents damage in the case of any accidental falls. Stay fully protected while receiving up to 94% of additional battery life!
No Extra Cables Needed! This battery case charges and syncs using your USB-C cable. Our battery cases do not require any additional cables for recharging. Simply plug-in your existing charging cable directly into the charging port at the bottom of the battery case to recharge both devices.
Get full protection for your Galaxy S21 Ultra with this stylish, lightweight, and protective battery case. Surf the internet, watch movies, play games, send emails, and talk for hours longer on your Galaxy S21 Ultra using this super affordable battery case designed exclusively for the Galaxy S21 Ultra!
The Galaxy S21 Ulta contains an internal 5000mAH battery. This Galaxy S21 Ultra battery extender case offers an additional 4700mAH battery; almost one times (1X) the capacity! Get a total of 9700mAH of battery power and up to an additional 94% of extra battery life!
Our battery cases feature high quality, lithium polymer, batteries that are guaranteed to offer you maximum power and durability! Don’t settle for battery cases with cheap, low quality, batteries that will only last you weeks and may cause damage to your phone.
- Slide your Galaxy S21 Ultra into the battery case, lining up the USB connector of your phone with the USB connector of the case.
- Press and release the power button located on the back of the case to begin using the 4700mAH battery built inside of the case. Press and release this power button at anytime to stop using the 4700mAH battery and begin using your phone’s internal battery.
- Plug your USB-C cable into the bottom of the battery case to recharge both your phone’s internal battery and the battery case. To recharge both devices you will need to press and hold the power button located on the battery case to activate the connection between the phone and case after the case has been plugged into a power source.
About AMP Cases:
AMP Cases takes pride in offering the largest selection of the most powerful battery cases available online. You can rest assured you are purchasing a long-lasting, superior quality, battery case designed exclusively for your mobile phone. All of our cases only feature the highest quality lithium polymer batteries designed for a minimum of 500 complete recharges. We also construct our cases using only premium quality materials to ensure durability and maximum protection for your phone. Every case we sell is backed by our 30-day satisfaction guarantee and includes a complete manufacturer’s warranty protecting you against any defects. We challenge you to compare the battery capacity and price of our cases to any of our competitors. AMP Cases guarantees to offer you more power for less money!