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Specification:
Item Type: MPPT Solar Panel Controller Module
Input Voltage: DC 12-28V
Output Voltage: DC 1.2-11V Adjustable (3.6V 4.2V 4.3V 4.35V 8.4V)
Input DC 7-28V, Output DC 1.2-21V Adjustable (3.6V 4.2V 4.3V 4.35V 8.4V 12.6V 16.8V 21V)
Led Indicator: ''CR'' LED is status indicator
Ambient Temperature: -40 to 85
Size: 45x20x15mm / 1.77x0.79x0.59in
Application:
18V 12V 9V Solar Battery Charging
Car Battery Charging
Mobile Loadspeaker
Electric Bicycle Charger
UPS
Portable Industrial and Medical Equipment
Hand-Held Equipment
Emergency Lamp and Camping Lamp
Battery-Backup System
Standalone Chargers for Lithium ion, LiFePO4 or Lithium Titanate Batteries
Package List:
1 x MPPT Solar Panel Controller Module
David ()
Reviewed in the United States on June 28, 2022
I have a DIY project. In the shortest, 12v solar panel to a battery powered ESP32 powered project. I'm no electrical wizard. All I can say is my battery was not charging before installing this board. The voltage would equate to like 5v... With this board, the battery is now charging at 12v during peak times.So I guess that speaks for itself? I cannot speak to the durability, reliability, or anything else. It worked for that small project. I didn't have to do anything besides install it between the panel and the battery or load with a diode. Before this board, I didn't even know a solar charger was required. Take this all with a grain. I'd use this again.
catalin popovici
Reviewed in the United States on June 22, 2022
Reasonable value for the money, a bit overpriced and slightly misleading description. The used IC is regulating Vin at a user-adjustable voltage (resistor value change on PCB) to match the panel's average Vmpp instead of actually tracking the slightly variable MPP. Not a major problem though, but should have been at least clearly stated as "fixed MPP device" instead of "MPPT" - which stand for maximum power point tracking. The "tracking" component is actually a pre-set voltage. If you need to set it for a 22 V Voc panel, you have to change the Vmp setting resistor as outlined in the documentation. The IC datasheet can be found online. The schematic follows closely the typical application. I added a reverse-protection Schottky diode series at the output to ensure low leakage when the sun is down and the battery must conserve energy. The trimpot allows the user to trim the output voltage limit to match their battery max charging voltage. I would not increase the current limit (by changing the sense resistor) due to thermal management concerns. If you definitely need more current, add heat sinks and ventilation.
GP
Reviewed in Canada on January 31, 2022
If your looking to charge smaller LifePO4 batteries (
Wooseok Nam
Reviewed in the United States on January 20, 2021
This module does not have reverse current blocking. I used this module to charge a Li-ion battery pack with a solar panel, and it worked well during day time. But, during the night time, when the voltage of the solar cell drops, the module started to drain current from the battery pack. So, I had to disconnect the module from the battery pack whenever it's not charging.
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