PV Vehicle-Mounted Systems
0102030405
12/24V 40A MPPT Solar Charge Regulator for RV Camper, Yacht Marine and Off-Grid Battery System
Product description
The MPPT solar charge controller manages battery charging from solar panels. Its built-in MPPT maximum power point tracking module can detect the output voltage of solar panels in real time and track the optimal voltage and current (VI) values, enabling the system to charge the battery at maximum power output.
Used in solar photovoltaic systems, it coordinates the operation of solar panels, batteries and loads, and protects batteries against overcharge and over-discharge.
- Advanced dual-peak or multi-peak tracking technology, when the panel is shaded or part of the panel is damaged, the I-V curve will come into being multiple peaks, and the controller can still accurately track the max power point.
- Built-in maximum power tracking algorithm, which is about 20% higher than the traditional PWM charging efficiency, can significantly improve the energy utilization efficiency of PV systems.
- Up to 99.9% MPPT tracking rate.
- Supporting gel batteries, sealed batteries, open batteries, lithium batteries,etc.
- Current-limit charging mode. When the power of the panel is overload and the charging current is greater than the rated current, the controller automatically reduces the charging power to operate it at the rated charging current.
- Support battery voltage automatic identification.
- LED fault indication, LCD abnormal information indication, convenient for the user to determine the system fault.
- LCD screen shows device running data and status, and supports controller parameter altering.
- Standard MODEBUS protocol to meet the communication needs on different occasions.
- External Bluetooth, mobile phone app connection, to view solar charging and battery storage in real time.
Product Parameters
(Note: * n When the system voltage is 12 v, n = 1; When the system voltage is 24V, n = 2)
| Parameter name | Parameter |
| Model | GS-M2440N |
| System voltage | 12V/24V Auto (FLD/GEL/SLD) Manual (Li/User) |
| No-load loss | 12mA(12V),10mA(24V) |
| Maximum solar input voltage | <100Voc |
| Rated charging current | 40A |
| Maximum input power of photovoltaic system | 600W/12V 1200W/24V |
| Optically controlled voltage | 5V*n |
| Light controlled time | 10s |
| Rated discharge current | 40A |
| Operating temperature | -35ºC ~ +45ºC |
| Protection class | IP32 |
| Weight | 2.0kg |
| Communication mode | RS485(Modbus) |
| Altitude | ≤ 3000 m |
| Size | 245*180*82.5mm |
| Battery type | FLD | SEL | GEL(Default) |
USER (configurable) |
LI (configurable) |
|
Equalizing charge voltage |
14.8V*n | 14.6V*n | —— | Default:GEL | —— |
|
Boost charging voltage |
14.6V*n | 14.4V*n | 14.2V*n | Default:GEL | 默认14.2V*n |
|
Floating charge voltage |
13.8V*n | 13.8V*n | 13.8V*n | Default:GEL | —— |
|
Increase the charge return voltage |
13.2V*n | 13.2V*n | 13.2V*n | Default:GEL | —— |
|
Overdischarge return voltage |
12.6V*n | 12.6V*n | 12.6V*n | Default:GEL | —— |
|
Overdischarge voltage |
11.1V*n | 12.6V*n | 12.6V*n | Default:GEL | Default 11.1V*n |
|
Temperature compensation coefficient |
-3mV/2V/℃ | -3mV/2V/℃ | -3mV/2V/℃ | Default:GEL | —— |
Schematic Diagram
Product Display
Relevant Information
There are significant differences in core performance between PWM and MPPT controllers. In terms of conversion efficiency, PWM controllers range from 70%-80%, while MPPT controllers can reach 95%-99%, and can increase power generation by 15%-30% under complex lighting. In terms of applicable scenarios, PWM is suitable for small-power systems (<150W), budget-tight situations, and stable lighting environments such as street lamps and camping equipment. MPPT is more suitable for medium and high-power systems, scenarios with large lighting fluctuations, and situations where module and battery voltages do not match, such as RVs, ships, and ground power stations. Cost-wise, PWM is cheap with a simple structure, while MPPT has higher initial investment due to better hardware and algorithms but can break even through power generation gains within 1-3 years. Market-wise, MPPT became mainstream in 2024 with 68% penetration in new off-grid projects, while PWM dropped to 31%.
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