It can be used for large batteries such as 46950 and small button batteries such as 2032,Test all kinds of batteries from small buttons to 46950 large batteries,Applicable battery models: 18650, 26650, 14500, 16340, 26850, 18350, 32650, 46950, etc. all lithium batteries; , , No. 7, etc. all dry batteries; 2032, GPA76, LR44, etc. all button batteries. Easy discharge aging detection Four-wire output with zero voltage drop,Professional-grade four-wire system and compatible with two-wire system, easily clamping large 18650 batteries. The negative electrode material is a copper core component with a strong elastic spring inside for good contact. Can easily hold a variety of large batteries,The load must be purchased separately and can be tested only with the load. Hign-concerned Chemical:none Type:DC :ELECTRICAL Colour:As Shown Material:Metal Package Contents: 1 * Battery BOX Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.