Antioff Power-Case

Antioff Power Case It Convenient Replacement Battery Case than Power Bank. ========================================================================= When you need to charge a phone, just simply change a battery. Product Specification: - Weight: about 60g (only phone case) / about 110g (If, included 1 battery) - Color & Design: Various - How to use:   o Type 1 (Using Power-adapter and usbc cable)     * Input: DC 5V - min 1.0A or more     * Output: Input current/Voltage are supplied as it is.   o Type 2 (Using Replacement battery in Case)     * Input: DC 3.8V - 2600mAh     * Output: DC 5V - 1.0A *  Usable battery: Compatible with Galaxy S4 (I9500)   - Capacity: 2600mAh, 9.88Wh   - Weight: about 40g Features and Use: 1. How to charge a phone?   (A) Just press down the back cover of Case to open it and insert full charged battery. 2. How to charge a battery or phone?   (A) Just connect a power cable into ANTIOFF Case. (You can use usbc cable. Not Lightning)         If there is a battery in the case, the phone and battery will be charged at the same time.         If there is no battery in the case, will be charged the phone. 3. Can I purchase additional batteries?    (A) Yes. you can buy more batteries. Simply search for I9500 battery or S4 battery. 4. I want to change the design cover, what should I do?    (A) We have prepared a variety of design covers for you. Buy a cover with the design you want and change it.  Cautions  --------------------- [1] Batteries are not included in this product. Lithium-ion batteries can be ordered separately or in bundles. Before adding battery options, check and select whether there are any battery customs issues in your country. [2] This product is not subject to electrical and radio certification.     (The batteries included in the bundle are FCC, CE, and KC certified.) --------------------- * This is not a power bank, It's a Power-Case for Smartphones. * You can purchase additional lithium-ion batteries by searching for Galaxy S4 battery.