WORKHORSE !   Thats the YOCAN UNI Pro battery ......a  sweet compact battery with lots of features. One year warranty through Yocan,  but we can help assist. A magnetic adapter, which is provided, is screwed onto the cartridge and then is inserted into the battery. There is a height adjustment for 1/2 or 1 gram carts. A kaleidoscope lens style retainer hugs the cartridge to prevent any side shifting of the cartridge. Both the adjustable heat setting and battery voltage are very clearly displayed on the OLED screen. The voltage setting is quickly adjusted with actual buttons at the display screen. 
 
YOCAN brand premium cartridge battery
1 Year Warranty through YOCAN 
Various, rotating colors available
Adjustable voltage for smaller or bigger vapor
Magnetic adapter and charging cord included
Spare magnetic cartridge adapters are kept in stock