The AccelTex Solutions new battery pack - The Accelerator - was specifically designed for use at site surveys. Its small, compact design and battery capacity allows for many hours of continuous use. It is the ultimate site survey tool and is a must-have for all Wi-Fi engineers.
 
Check out this independant review by the WiFi Ninjas 
 
FEATURES
 PoE output (802.3af, at, bt)
 USB-C
 Lightweight and portable
 Integrated threaded insert
 Charge while in use
 USB 2.0
 12V output (3A)
 LCD Display toggles between battery percentage and voltage