Universal Compatibility. This ultra-slim external battery widely supports most 5V input USB charged devices. Power Control. The 4 LED electricity indicators clearly show you the power levels. Aluminum material, comfortable touch feeling, wearable and corrosion resistance. Difference between Li-polymer battery and Ordinary battery:-Long Working Life. The Li-polymer battery guarantees 800+ high quality recharge cycles. It's 1.6 times of the ordinary battery.-Performance Stability The capacity of the Li-polymer battery will not weaken after more than 3 years using. It's more stable than ordinary battery.-High Conversion Rate The Li-polymer battery is up to 90%, it is 20% higher than ordinary battery. The Li-polymer battery is made by colloidal electrolyte, it will not produce a lot of gas due to liquid boiling, so it will not explode. It's more safe than the ordinary battery. Kindly Note: 1.Adapters for iPhones of iPads are not included.2. To ensure complete safety and best performance, we strongly recommend using your device's original cable or our included cable. 3. To start a charge, first press the power button.
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