FINAL DAY! Celebrate the New Year with 21% OFF all purchases. Use code NY21 at checkout

Samsung Galaxy S8+ Battery Case (5500 mAh)


Receive up to 167% of additional battery life

  • The first battery case exclusively designed for the Samsung Galaxy S8+ Plus
  • A total of 9000 mAh of power
  • USB charging and syncing without needing to remove your phone from the case 
  • USB type-c charing port, no additional cables needed
  • Color changing LED light on back of case displays status of back-up battery
  • Sleek, elegant, and lightweight rubber design featuring a Non-Slip Comfort Grip
  • Super lightweight case weighing only 4 ounces
  • Raised bezel for protection against drops and falls
  • Easy access to all controls
  • On and Off Button on the back of the battery case
  • Color changing LED light 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, Blue, Gold, or Red
  • Case weight: 4.4 oz

Plus Cases is proud to introduce the world's first battery case designed exclusively for the all new Samsung Galaxy S8+ Plus! Our newly designed Samsung Galaxy S8+ Plus Battery Case features a built-in 5500mAH lithium polymer battery for up to 167% of additional battery life on your Galaxy S8+ Plus. Our newly released battery case features a revolutionary thin, lightweight, design with a raised bezel that offers maximum protection for your phone.

Never run out of that much needed power on your Samsung Galaxy S8+ Plus! Surf the internet, watch movies, play games, send emails, and talk for hours longer on your Galaxy S8+ Plus using this lightweight, powerful, and sleek 5500mAH battery case designed uniquely for the Galaxy S8+ Plus! This is our most powerful battery case available to guarantee you hours of extra use! Our battery cases feature high quality, lithium polymer batteries, that are guaranteed to last!

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.

    To Use:

    1. Slide your Galaxy S8+ Plus into the battery case, lining up the USB connector of your phone with the USB connector of the case. 
    2. Press and release the power button located on the back of the case to begin using the 5500 mAH battery built inside of the case. Press and release this power button at anytime to stop using the 5500 mAH battery and begin using your phone's internal battery. The color of the LED light on the back of the battery case will indicate the battery capacity of the case (red 1-25%, blue 25-50%, green 50-75%, and white 75-100%)
    3. Plug your USB 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. If you simply plug-in the case to a power source without pressing the power button only the case itself will recharge.

      About Plus Cases:

      Plus 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. Plus Cases guarantees to offer you more power for less money!