Input: 5V/9V/12V--3A (max) Output: 8.5V==4.0A(max) USB output: 5V/2A Charging time: (input: PD 40W or higher) 2453mAh battery about 90 minutes (45 minutes per battery) 3850mAh long battery life about 130 minutes (65 minutes per battery) Product size: 8*6*6.2CM Packing size: 6.8*6.5*8CM Net weight: 95g (excluding wire weight) Packing weight: 143g Charging ambient temperature: 040C For mini 3 Pro battery and long battery life. Features: 1. You can check the battery level 2. You can put up to 2 batteries, and charge them in order from high to low. Batteries with high power are charged first. 3. Support PD, QC3.0 fast charging 4. The MINI3 battery can be converted into a power bank to charge the remote control or other USB devices 5. It can also store batteries for easy portability.packing list:1 x Mini 3 Two-way Butler1 x USB-A to USB-C charging cable1 x USB-C to USB-C charging cable Note: Battery not included