Compact size, portable and multi-functional design. Designed for AA / AAA rechargeable batteries. You can charge 1 - 3 pieces AA / AAA batteries at the same time. It provides 4 independent charging slots. 3 individual LED indicator: Red LED in luminous when charging; Battery is full, the indicator light unchanged, constant light. Universal USB connection cable, can be inset PC or phone charger adapter with USB port. Short circuit protection to prevent short circuit and ensure use safety. Ideal for use at home, office, or on the road. Specifications: Item Type: Battery Charger Material: Plastic + Metal Color: White Size: 8.1×5×2.1cm/3.19×1.97×0.83inin (Approx.) Fit for: 1-3* AA / AAA battery (Not Included) Input: USB DC 5V Output: DC 1.2V USB Port: USB 2.0 Quantity: 1 PC