B6AC Quattro is a 4 channel, AC DC charger that means you can charge up to four different chemistry batteries at the same time without using an external power converter. Sky RC is the biggest charger manufacturer in China and also the number one supplier of re-branded chargers sold under many different names. This is not a copy of anybody else' product. This product is covered by one year warranty. Free shipping is available for US customers. (Specifications) AC Input:110-240V(360-330W) DC Input: 11-18Volt Charger circuit power: 4 x 50W(200W) Charge current range: 0.1-6.0A Discharge current power: 4 x 5W(20W) Discharge current range: 0.1-2.0A Current drain for balancing port: 200mA/cell NiCd/NiMH battery cell count: 1-15Cells LiPo/LiFe/Lilon cell count: 1-6Cells Pb battery voltage: 2-20V Net weight: 1.73kg Dimension: 225x170x66mm