Welcome to the store! Function: Normal version maximum power: 5V-2.1A Quick version maximum power: 5V-3A 9V-2A 12V-1.5A Quick charge + Wireless charging version Maximum power: 5V-3A 9V-2A 12V-1.5A 3.4V-5.5V-5A, Wireless charging: 5W/7.5W/10w/15W The charging power depends on your device, for example: 9V-2A, if your device supports 9V-2A, it will automatically jump to 9V-2A, if not, it will not jump. Battery not included !!! DIY battery box only !!! PD version needs to be activated (after the battery is installed, the battery level will show as zero) The activation step is as follows: After installing the battery, insert the data cable to link the battery box to activate. After activation, the battery power is normal. Specification 1. Function: digital display with power, removable, solder-free, with reverse connection protection, can charge 21 18650 flat batteries. When the built-in battery can be used as a power bank, the normal version requires a charging cable. (battery not included) 2. Handmade DIY mobile power pack, self-configured mobile power, larger battery capacity and more, can better solve your charging problem. 3. Suitable for people with greater charging needs, equipped with 3 charging interface types, for, for Type-C can charge the charging box. 4. With power display, let you know the remaining power anytime and anywhere, and charge your mobile phone or other devices better. Size: 187x82x64mm Material: plastic Color: black Package contents: 1 * 18650 battery mobile power case 1 * data cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real one. The allowable measurement error is +/- 1-3 cm. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!