Features: Experience easy installation with our 18650 battery holder, make electronic projects accessible for everyone. Specially for 18650 lithium batteries, it can provide matching charging voltages and current to ensure the batteries fully charging,safely and quickly. There is indicator light on the charger, which can show the charging status of each battery, which is convenient for users to know the charging progress of the battery. From ABS this battery holder offers excellent durability and small size designing, ensuring long time use without deformation. Multi-slot charger with variety of safety protections mechanisms, such as overcharges protections, shortcircuits protections to ensure safety of the battery during the charging process.. Specifications: Material: ABS Length: 103mm/4.05in 1 Slot Size: about 103x24x22mm/4.05x0.94x0.86in 2 Slot Size: about 103x42x22mm/4.05x1.65x0.86in 3 Slot Size: about 103x63x22mm/4.05x2.48x0.86in 4 Slot Size: about 103x82x22mm/4.05x3.22x0.86in Weight: 80g Power Supply 3.7V/4.2V Features: In addition to 18650 lithium batteries, also compatibles other similar specifications of lithium batteries Package Includes: 1PC Battery Charger note: There might be a bit color distortions due to different computer resolution There might be size errors due to different computer resolution