Division Slim Power Bank 2500 comes with a 2500mAh battery capacity that is bigger than most other giveaway power banks. Yet, it comes with the largest imprint area for an outstanding full-color logo or even an entire marketing campaign design. Input: 5V1AOutput: 5V 1A. Capacity: 2500mAh. Size: 97 x 63 x 7mm / 3.82" x 2.48" x 0.28". Battery: Grade A Li-polymer. Battery lifespan: over 500 times full charge.