-Ultimate power and protection for your Galaxy S5.-On a power trip.Packed with a category-high 7500mAh of power, use your phone almost three times longer than before. That's up to 56 hours of 3G talktime, 27 hours of internet or 32 hours of HD movie viewing, ideal for prolonged activities in places lacking conventional power.-Keep your S5 newer, longer.The durable TPU back cover protects your phone's corners, sides and back, effectively absorbing hard impacts, all while adding only half an inch of thickness (including battery) to your device. Improve both your battery life and your phone's life at the same time.-Total efficiency.External power sources typically waste up to 35% of energy through voltage conversion. But an internal battery is totally power-efficient, giving your phone 100% of the stored energy to use. And with no wires, buttons or LEDs, use your S5 without any added complexity either.-Upgrade via replacement.We wouldn't give you anything less than the best. Grade A cells chosen from among the top 10%. Rigorous inspection tests to ensure reliability. Integrated circuit chips to prevent against short-circuiting. But what's the point? In terms of quality, there's no better replacement battery.