The ENERGI Sliding Power Case for the Galaxy S 4 is a sleek protective case with a built-in battery, which doubles your standard battery life. ENERGI is superior in design, material, quality and construction.buy here
2 slim-line interchangeable accent cases.
Rechargeable 2,350mAh internal battery.
Use protective accent case with or without power sleeve.
Charge, sync, transfer data, and listen to music with power sleeve on.
LED lights indicates remaining battery capacity.
Does not interfere with your phone's NFC functionality.
The ENERGI Case with slide on battery is made for the real world. And with slim battery technology we only add 9mm to the thickness of the iPhone, you barely know you are carrying 9 additional hours of talk time. We include 2 slim-line cases; 1 black, 1 colored, so you can change your style on-the-fly.
(1) Power Sleeve
(1) Black Accent Case
(1) Colored Accent Case
(1) Micro-USB Charge & Sync Cable
(1) User Guide
1 Year Limited Warranty
The Examiner: 5/5 stars - "Among powered cases, the TYLT Energi sliding case is the most innovative and flexible I have tested to date." go »
TechWeLike: "If you're looking for a battery charging case that won't add too much bulk to your iPhone or Galaxy S4, the TYLT Energi Sliding Power Case is a great choice." go »
cNet: "Given the case's minimalistic aesthetic and simple lines, it manages to pull off looking pretty chic" go »