The ISDT K1 is a simple to use, no-nonsense dual input (AC/DC) charger that can charge two battery packs simultaneously. It has the ability to charge at up to 10A. Also, each channel can operate independently of each other, meaning that two different sizes or different chemistry batteries can be charged at the same time. You can even combine both channels in parallel for synchronous balance charging to achieve even more output power. The max charging current on AC power is 100W per channel, and on DC power it is 250W per channel. The four programming keys are simple and intuitive to use in conjunction with the color LCD display screen.