Solar Controller 20/30 Amper

MPPT solar charge controller is designed to automatically charge 12V and 24V sealed and vented lead acid batteries from silicon based PV modules such as thin film, monocrystalline and polycrystalline. It has a built in Low Voltage Disconnect (LVD) configurable as a Dusk-to-Dawn switching. It can be connected to a PC for monitoring the full system parameters. It is a high quality product that offers the best price / performance ratio in the industry.




• Built-in MPPT algorithm (Maximum Power Point Tracking), that promotes energy utilization efficiency of solar system. The charging efficiency is 20%~25% higher than PWM mode.
It can find out the best working point of I-V curve within 1 minute. The MPPT efficiency could reach to 99,9%.
Adopting advanced digital power supply techniques which makes the energy conversion efficiency reach up to 97%.
Four charging stages: MPPT - equalizing charge- boosting charge- floating charge.
There is current-limiting charging mode. When the power of solar panel is oversized and charging current exceeds the rated current, the controller will lower charging power automatically, which enable the system to work under the rated charging current.

Has a fault code  indication, it helps users to confirm the system fault.
Various load control methods. Recognize day and night automatically.
• With temperature compensation function to adjust the charge and discharge parameters automatically, this could extend the life of the battery.
Various system protection functions. Including over-charge, over-discharge, over-load, over-heat, battery-reverse connection and short-circuit protection etc.

Technical specification

Parameters Value
Model MT2420 MT2430
System Voltage 12 V / 24 V Auto 12 V / 24 V Auto
Max. Input Power of Solar Panel 260W / 12V; 520W / 24V 400W / 12V; 800W / 24V
Max. Solar Input Voltage 150 V 150 V
Rated Load Current 20 A 20 A
Rated Charging Current 20 A 30 A
Transfer Efficiency ≤ 97% ≤ 97%
No-Load Loss < 20 mA
Max. Input Voltage of Solar Panel < 150 V
MPPT Tracking Efficiency > 99%
Equalizing Charging Interval 30 days
Over-Voltage Protection 16,5 V, × 2/24,0 V
Limited Charge Voltage 15,5 V, × 2/24,0 V
Equalizing Charge Voltage (25°C) 15,2 V, × 2/24,0 V
Boost Charging Voltage (25°C) 14,4 V, × 2/24,0 V
Floating Charge Voltage (25°C) 13,8 V, × 2/24,0 V
Over-Discharge Recovery Voltage 12,5 V 25,0 V
Over-Discharge Voltage 11,0 V 22,0 V
Boosting Charge Time 2 hours
Equalizing Charge Time 1 hour
Temperature Compensation Coefficient -4,0mv/°C/2V
Over-Temperature Protection Yes
Light-Operated Voltage (On) 5,0 V
Light-Operated Voltage (Off) 6,0 V
Light-Operated Delay Time 5 min
Working Temperature -35°C – +65°C
Protection Level IP32
Weight 1,18 kg 1,56 kg
Max. Wiring Dimension 25 mm²
Altitude ≤ 3000 m
Product Dimension 181 x 115 x 72 mm 181 x 170 x 72 mm
Installation Dimension 176 x 70 mm 175 x 125 mm

We reserve the rights to make alterations to the design of product in the interests of technical progress without notice.



• 3 years for product defects.


Installation Safety Guide

• Only qualified personnel should install or perform maintenance;
• Be aware of dangerous high DC voltage;
• Do not damage or scratch the rear surface of the module;
• Do not handle or install modules when they are wet.