SmallRig VB99 Pro mini V Mount Battery 4292 is about 70% the size of a normal V-mount battery, given its highly integrated design which takes up less space, making it lighter and more portable! The highly integrated (fast charging protocol chip + Mcu + voltage boost control) Bms chip supports a wide range of mainstream fast charging protocols (Pd / Qc / Pps etc.), bi-directional 100W (Max.) Usb-c Pd fast charging, as well as adaptive voltage boost/ adaptive current regulation etc.! In addition, its customized intelligent Bms system ensures faster and safer charging by providing multiple protections against over-current / short-circuit / over-temperature / over-voltage etc. Such interfaces as D-tap / Usb-c / Usb-a / 8V-out / 12V-out / Bp electrode are also included for efficient charging / powering of camera / camcorder / monitor / wireless video transmitter / Led video light / mobile phone / laptop etc., without using a V-mount plate to convert! The Bms chip has a 16bit Adc / power meter algorithm, together with an Mcu and a Tft digital display for you to keep track of the battery's status at all times. Built-in premium high-performance battery (no inflated capacity), which is rechargeable and stable, and meets Msds / UN38.3 / IEC62133 / UL2054 / UL62368 and other internationally recognized standards. Its shell is made of sturdy, drop-proof aluminum alloy and fireproof Pc and features durable, Scratch-resistant Pc and acrylic cover on the front, with a Tft color screen displaying battery status clearly and accurately.