Charging Lithium-ion batteries: Contact plates can be adjusted easily from right side of charger to the – and + contacts of the battery. ,- USB port: Can charge mobile phones, mp3/mp4 players and Apple products like iPhone and iPod with USB mobile Phone charge cable and connectors directly, no need to take the batteries out. ,- Automatically detect the battery voltage, type and their +/- poles, and adjusts to charge ,- Controls fast/trickle charge accurately to ensure the batteries charged swiftly and fully. ,- Battery activation function for deep discharged Li-ion batteries. ,- Over-voltage, short-circuit and over-time protections and defective battery detection. ,- Input: 12V DC 800mA ,- Li-ion charge output rating: 4.2-4.3v 800mA / 8.4-8.6v 600mA ,- NiMh/NiCd output rating: 2*1.4v 800mA max. ,- USB output rating: 5.2v DC 600mA max ,- Dimension: 112(L)*65(W)*25(H)mm ,- Weight: 78g