Features: The BT860 battery tester can accurately test various types of batteries, a movable arm to accommodate the batteries. Equipped with high-precised measurement function, it can display parameters such as battery capacity, voltage, internal resistance, etc. Supports multiple battery specifications, easy to operate, and fast response. Small in size, lightweight, and easy to carry, it is the perfect companions for travel. Suitable for all disposable and rechargeable AA, AAA, C, D, 9V 1.5V and most button batteries.