PWM MAX20 20A 12/24V charging controller
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  • PWM MAX20 20A 12/24V charging controller

PWM MAX20 20A 12/24V charging controller

zł163.98
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The MAX20 20A 12/24V PWM charge controller is a device that controls the battery charging process. It offers voltage stabilization, protection against overload and excessive discharge.

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MAX20 20A 12/24V PWM Charge Controller

The MAX20 20A 12/24V PWM Charge Controller from the MAX‑EU series is an intelligent, multi-functional solar controller with a large LCD display, designed for use in standalone 12V and 24V photovoltaic systems. The device controls the charging and discharging process of batteries from PV panels, protecting them against overcharging, deep discharge, and overloading, which translates into a longer lifespan and safe operation of the entire system.

     

Description and Application

The MAX20 uses PWM charging technology, using a multi-stage algorithm (Bulk, Boost, Equalization, Float), which optimizes energy absorption by the battery and stabilizes the voltage in the system. The controller automatically recognizes whether it operates in a 12V or 24V system, making installation simple and eliminating the need to manually change the mode. Parameters such as load cut-off voltage, battery type, and discharge output mode can be adjusted to suit the specific system, directly impacting the level of battery protection.

Current operating parameters (voltage, current, charge level, and operating mode) are displayed on a large, easy-to-read LCD screen, facilitating real-time monitoring of the installation. The MAX20 20A 12/24V controller is designed for small off-grid PV systems, such as those in campers, caravans, holiday homes, allotment gardens, lighting systems, and emergency power supply units.

The device features a full suite of electronic protections, including overcharge, deep discharge, short circuit, overload, and reverse polarity protection, significantly reducing the risk of damage to the battery and receivers. The built-in 5V/2A USB port allows you to directly charge mobile devices using the energy stored in the battery, which is particularly useful for mobile applications.

   

Features and Benefits

  • Automatic 12V/24V DC system voltage detection.

  • Nominal charging and output current of 20A – ideal for small PV installations.

  • Multi-stage PWM charging (Bulk, Boost, Equalization, Float) with temperature compensation.

  • Large LCD display showing current system parameters and energy statistics.

  • Battery type selection: Flooded, AGM, Gel (Gel).

  • Built-in 5 V/2 A USB port for charging mobile devices.

  • Adjustable load disconnection and reconnection parameters (LVD/LVR) for better battery protection.

  • Load operating modes: Standard, D2D (dusk to dawn), Street lighting (2–9 h).

  • Low self-consumption (approx. 5–7 mA), important in small PV installations.

    

Technical parameters:

Model

MAX20‑EU

Operation Mode

PWM Solar Charge Controller with LCD Display

System Voltage

12 V / 24 V DC (Auto-detect)

Maximum Charging Current

20 A

Maximum Current load

20 A

Maximum PV connector voltage (VOC)

55 V DC

Maximum battery connector voltage

35 V DC

Maximum panel power (12 V)

Approx. 260 W (at 20 A)

Maximum panel power (24 V)

Approx. 520 W (at 20 A)

Boost Voltage

14.5 V / 29.0 V (at 25 °C)

Equalization Voltage

14.8 V / 29.6 V (at 25 °C)

Float Voltage

13.7 V / 27.45 V (at 25 °C)

Load Cutoff Voltage (LVD)

10.8-11.8V / 21.6-23.6V (SOC 1-5)

Low Voltage Reconnection (LVR)

11.6-12.8V / 23.2-25.6V

Overcharge Protection

15.5V / 31.0V

Temperature Compensation

-4.17mV/K/cell (Boost, Equalization), -3.33 mV/K/cell (Float)

Supported Battery Types

Flooded, AGM, Gel

Dusk/Dawn Detection Voltage

5 / 10 V

USB Interface

1 × USB 5 V / 2 A

Load Operating Modes

Standard, D2D (from dusk to dawn), Street lighting (2–9 h)

Dimensions (L x W)
Lumiax
SOL-REG-PWM-MAX20
200 Items

Data sheet

Voltage
12V ~ 24V
Power
480W
Current
20A
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