I have been using Ventev (TerraWave) for years. They have been my go-to for external antennas, NEMA enclosures, and AP mounting solutions. Whatever unique requirements your wireless has, Ventev has an elegant solution. Check them out here, https://ventevinfra.com/products/.
Ventev announced at Mobility Field Day 6 (MFD6) that they are coming out with a site survey battery solution for wireless engineers. It isn't exclusively for Wi-Fi engineers. Anyone can use it, but it will undoubtedly help with AP-on-a-stick surveys. Gone are the days of carrying a long extension cord and PoE injector, searching for a working AC outlet. Portable PoE makes your survey rig super mobile.
The 26,400mAh / 98Wh Lithium Polymer battery is the maximum battery capacity allowed by the FAA for a carry-on battery. Other notable features, USB-C charging, no more one-off barrel connector charger, carrying case, and pole mount included. 3-hour charge from 0 to 100%.
Important Note: When not providing PoE power, the USB-C port can be used as a power source. While the PoE ports are in use, only the USB-A port can be used to charge devices, the USB-C port will be disabled.
I can't wait to add the VenVolt 2 to my survey kit. I am very interested to see how this unit performs. Potentially all-day surveys, with a lunchtime charge top off for those extra power-hungry AP's. Weighing in at only 2.2 pounds, you will hardly notice it.
Check out the MFD6 release announcement here - https://techfieldday.com/appearance/ventev-presents-at-mobility-field-day-6/
Ventev also had an excellent presentation on their power systems products, solar, battery enclosures, and kits here - https://techfieldday.com/appearance/ventev-presents-at-mobility-field-day-6/