Lithium ion smart charger. Use for K2's K2B24V batteries. ED read out, green for power on and charge complete (not charging). Red for Charging. 50/60Hz 100 - 240VAC input. Certified CE, UL, FCC, ROHS, ASA, TUV, and PSE. Specify SAE connection attached pigtail, or Fasten 250, or Alligator Clips, or Ring Terminals in the comment section when ordering.