What is a B-smart 510 thread charger?
510 Thread USB Charger
This 510-Thread USB charger is compatible with most female 510-Thread Batteries. Simply screw your 510 thread battery direction to the charger and plug the USB end into a wall outlet or computer. Key Features: Compact Design. Over Voltage Protection.
Universal 510 Threading that works with virtually all vape pen/dab pen batteries that are pen style and charge via 510. By the way, the 510 Thread USB Charger do NOT compatiable with the Yocan Kodo Pro or Yocan UNI.