MPPT Solar Charge Controller (20/30/40 Amp) - PV System Tracker (DML Series)

DML PV 20/30/40 Amp Charger, equipped with advanced MPPT technology, accurately tracks the maximum power point of solar panels and improves energy conversion efficiency. Intelligent control system, one-button operation, easy charging management, protect battery safety. 20A, 30A, 40A multiple specifications are available to meet different needs. Compact design, easy installation, widely compatible with various solar panels and batteries.

Multiple specifications available, 20A, 30A, 40A charging currents are available
Intelligent control
Wide compatibility
Wide voltage automatic identification
Product adapter interface, 24V and 48V products are equipped with RS232 interface, and 48V products also have RS485 interface.

LED fault indicators and an LCD screen which can display abnormality information help users to quickly identify system faults.

Comes with a DC output terminal, making it convenient to directly connect and use DC devices.

The 24V/48V products feature RS232/485 communication interfaces, enhancing the system’s remote management and data transmission capabilities.

Electric Parameters
Parameter	Value
Model	DML-MPPT-20A	DML-MPPT-30A	DML-MPPT-40A
System voltage	12V/24VAuto
No-load loss	0.7 W to 1.2W
Battery voltage	9V to 35V
Max. solar input voltage	100V(25℃) 90V(-25℃)
Max. power point voltage range	Battery Voltage+2V to 75V
Rated charging current	20A	30A	40A
Rated load current	20A
Max. capacitive load capacity	10000uF
Max. photovoltaic system input power	260W/12V 520W/24V	400W/12V 800W/24V	520W/12V 1040W/24V
Conversion efficiency	≤98%
MPPT tracking efficiency	＞99%
Temperature compensation factor	-3mv/℃/2V（default）
Operating temperature	-35℃ to +45℃
Protection degree	IP32
Weight	1.4Kg	2Kg	2Kg
Communication method	RS232
Altitude	≤ 3000m
Product dimensions	21015159.5mm	23817372.5mm	23817372.5mm

Battery Type Default Parameters (parameters set in monitor software)
Parameters cross-reference table for different types of batteries
Voltage to set Battery type	Sealed lead-acid battery	Gel lead-acid battery	Open lead-acid battery	User (self-customized)
Over-voltage cut-off voltage	16.0V	16.0V	16.0V	9～17V
Equalizing voltage	14.6V	——	14.8V	9～17V
Boost voltage	14.4V	14.2V	14.6V	9～17V
Floating charging voltage	13.8V	13.8V	13.8V	9～17V
Boost return voltage	13.2V	13.2V	13.2V	9～17V
Low-voltage cut-off return voltage	12.6V	12.6V	12.6V	9～17V
Under-voltage warning return voltage	12.2V	12.2V	12.2V	9～17V
Under-voltage warning voltage	12.0V	12.0V	12.0V	9～17V
Low-voltage cut-off voltage	11.1V	11.1V	11.1V	9～17V
Discharging limit voltage	10.6V	10.6V	10.6V	9～17V
Over-discharge time delay	5s	5s	5s	1～30s
Equalizing charging duration	120minutes	——	120minutes	0～600minutes
Equalizing charging interval	30days	0days	30days	0～250D (0 means the equalizing charging function is disabled)
Boost charging duration	120minutes	120minutes	120minutes	10～600minutes

Does this charger support reverse battery protection?

Yes, DML PV Charger has built-in reverse battery protection function, which can effectively prevent equipment damage caused by reverse battery connection.

How to perform daily maintenance on the charger?

Regularly check whether the charger's connection line and interface are loose or damaged, keep the device clean and dry, and avoid using it in harsh environments.

What types of solar panels does this charger support?

DML PV Charger supports various types of solar panels, including but not limited to monocrystalline silicon, polycrystalline silicon and amorphous silicon.