1. Adopt advanced Synchronous buck-boost DCIDC converter technology, with high power, high current and high conversion efficiency. The maximum charging power is 2200W, the maximum channel charging and discharging current is 45A, and the maximum two-channel synchronous charging and discharging current is 70A.2. Support 8 series of balance charging of LiPo, Lilo, LiFe, LiVH,Nizn and LTO (adopt unique internal resistance correction balance algorithm and the maximum balance current of 2A to ensure the fast and accurate completion of balance); Support 1-25 series nickel-metal hydride, nickel-cadmium battery charging; Support 1-15 lead-acid battery charging.3. Realize dual-channel adjustable digital power supply (with protection functions such as overcurrent, overvoltage, input undervoltage and input overcurrent).4. With type-c PD charging port, it is convenient for users to charge mobile phones and tablets.5. Intelligent fan control. The fan speed is controlled by the internal temperature sensor.6. Internal temperature protection. If the internal temperature is greater than the attenuation temperature, the device automatically reduces the output power. If the temperature is higher than the stop temperature, the machine will stop automatically.7. The machine can save the parameter Settings of 64 groups of batteries, and support data import/export SD card.8. 2.8 "IPS full view color LCD display. Displays abundant information such as current, voltage, quantity, power, internal resistance, control status, consumption time, and temperature.9. A variety of discharge functions: this machine discharge, recovery to the input or another channel discharge, and lithium battery extended discharge function10. Supports offline and online measurement of battery internal resistance. Not only the internal resistance of the whole battery pack can be measured, but also the internal resistance of each individual cell of the lithium battery pack.11. Provide full protection. Input or output reverse pole protection, input voltage/current protection, battery temperature protection, capacity protection, time protection, maximum power, etc.12. It supports hardware program update via USB port or SD card, and can display, plot and analyze charging and discharging data through Junsi Console software.Specifications:Input voltage range: 10-49VDCMaximum output voltage: 40VDCMaximum input current limit: 70A(Channel 50A x2)Maximum charge/discharge current: 70A(Channel 45Ax2)Maximum charge power: 2200W (Channel 1600Wx2)Maximum discharge power: 140W (Channel 80Wx2)Maximum recovery discharge power: 2200W(Channel 1600Wx2)Maximum extended discharge power: 2200W(Channel 1600W @36V/45A)Maximum balance current: 4A(Channel 2Ax2)TYPE-C PD charging port: support 5V/3A, 9V/2A, 12V/1.5ASupport battery type: LiPo,Lilo, LiFe,LiVH, LTO, NiZn, NiMH, NiCd, PbDevice weight: 930gExternal dimensions: 171 x 118 x 57 earth 0.5mm;Packaging included:1XiCharger 458Duo