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Must 3Kw 24V Off-Grid Inverter -PV1800 LHM Series is a multi-function inverter/charger, combining functions of inverter, MPPT solar charger and battery charger to offer uninterruptible power support with portable size. Its comprehensive LCD display offers user-configurable and easy-accessible button operation such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications.

Must 3Kw 24V Off-Grid Inverter is a multi-function inverter charger that combines the functions of an inverter, MPPT solar charger, and battery charger into one unit. Its comprehensive LCD display offers user-configurable settings and easy-accessible button operation. The product can be used with a wide range of solar panels to create an off-grid solar system or act as a backup unit during power outages.


  • Rated power: 3KW.
  • Smart LCD setting (Working modes, Charge Current, Charge Voltage, etc).
  • Bult in MPPT 60A solar charge controller.
  • Combining solar system, AC utility, and battery power source to supply continuous power.
  • Overload, short circuit and deep discharge protection.
  • Cold start function.
  • Compatible with a generator.

Datasheet_Must 3Kw 24V Off-Grid Inverter

  • SKU: MT3.
  • Model: PV18-3024 VPM.
  • Brand: Must.
  • Power: 3Kw (3000W).
  • Type: Pure Sinewave Inverter.
  • Battery Voltage: 24VDC.
  • Max PV (Watts): 1500W.


  • Inverter Output
  • Default Battery System Voltage: 24VDC.
  • Rated Power: 3000VA 3000W.
  • Surge Power: 6000VA.
  • Waveform: Pure sine wave.
  • AC Voltage Regulation (Batt.Mode): 220VAC-240VAC(Setting).
  • Inverter Efficiency (Peak): 90%-93%.
  • Transfer Time: 10ms(UPS VDE4105) 20ms(APL).

AC Input.

  • Voltage: 230VAC.
  • Selectable Voltage Range: 170-280VAC(UPS) 90-280VAC(APL) 184-253VAC(VDE).
  • Frequency Range: 50Hz 60Hz (Auto-sensing).


  • Normal voltage: 24VDC.
  • Floating Charge Voltage: 27.4VDC.
  • Overcharge Protection: 30VDC.

Solar Charger & AC Charger.

  • Maximum PV Array Open Circuit Voltage: 145VDC.
  • PV Array MPPT Voltage Range: 30-120VDC.
  • Standby Power Consumption: 2W.
  • Maximum PV Array Power: 1500W.
  • Maximum Solar Charge Current: 60A.
  • Maximum Efficiency: 98%.
  • Maximum AC Charge Current: 20A or 30A.
  • Maximum Charge Current: 80A.

Mechanical Specifications.

  • Machine Dimensions (W*H*D)(mm): 272*355*100.
  • Package Dimensions (W*H*D)(mm): 485*393*251.
  • Net Weight: 7.4kg.
  • Gross Weight: 9.5kg