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*Caution: Connect the battery first. and then connect the solar panel The sequence cannot be reversed. Can be paired with solar panels (can be connected in series) MPPT 100A: Can be paired with solar panels 50--4800W (can be connected in series) Can contact with 12--48V battery. Description of charging protection *Note: Please connect the battery to the controller first, and then the photovoltaic panel to ensure that the battery voltage is higher than (12V battery is higher than 10V; 24V battery is higher than 20V; 36V battery is higher than 30V; 48V battery is higher than 40V), otherwise it will cause voltage Identification error. *Clock setting instructions: When the battery is connected, press "▲" "▼" to set the clock table, short press "■" to save. *Charging voltage setting instructions: After connecting the battery, after setting the clock and saving, long press "▲" for 3-5 seconds, the screen displays L**V as the floating charge voltage, which can be adjusted by pressing "▼"; short press again "▲"H**V is to increase the charging voltage, which can be adjusted by pressing "▼"; shortly press "▲" again. F**V is the low-voltage cut-off voltage of the DC load, which can be adjusted by pressing "▼"; after setting Long press "▲" for 3-5 seconds to save and exit. product details Charging type: MPPT *Max current: 100A *Battery type: Lead-acid battery (FLD\ GEL\ SLD) or lithium battery or user battery. *System Voltage: Auto 12V / 24V / 36V / 48V *Automatic voltage identification: 12V system uses a 15V-23V solar panel. 24Vsystem uses a 30V-46V solar panel. 36Vsystem uses a 45V-66V solar panel. 48Vsystem uses a 60V-90V solar panel. *Maximum PV power: 720W / 12V system; System 1440W/24V; 2160W/36V system; 2880W/48V system *Electromagnetic compatibility: AccordtoEN61000, EN55022, EN55024 *Automatic temperature compensation: -3mV / 2V / oC *Ambient temperature: -40℃~+75℃ *maximum efficiency: 99% *Waterproof level: IP21 *Net weight (kg): 1.1 *Dimensions (mm):180*190mm