SD29AJTC 80W MPPT Solar Charge Controller – 7-28V Buck Charger for 1-6S Li-ion LiFePO4 Lithium Titanate Battery 1.2-25V Output

 

 

Description:

 

DC-DC Step-down Charging Module for 1.5-25V Li-ion/Li-po/LiFePO4/Lithium Titanate Batteries



Input voltage : DC 7-28V

MPPT voltage :DC 7-25V(Adjustable)

Output voltage : 1.2-25V(Adjustable)

MPPT Disable: Solder J1 Pad



Charging current: 1A/2A/4A optional. You can also change the charging current by modifying the resistance of RCS1 and RCS2.



Can be used as Voltage Source when Battery is Absent



Automatic Conditioning of Deeply Discharged Batteries



Automatic Recharge



Led indicator : ''CR'' LED is charge status indicator(It may still be charging after the light goes out, this is normal)



Battery Overvoltage Protection



Operating Ambient Temperature－40℃ to ＋85℃



Size : 59 x 30 x 15mm

Weight : 16g(no Terminal);19g(with Terminal)

 

This is a step-down charging module with MTTP function. Please note when using it:


1 If the output fails after connecting to the power supply, please check whether the MTTP voltage is too high, and reduce the MTTP voltage

2 After the CR charging indicator is off, it is still charging, which is a normal phenomenon

3 The output current (charging current) is determined by the capacity and power of the battery. The maximum current cannot be directly output without connecting the battery.

4 This is a buck module, the input voltage must be more than 3V greater than the output voltage.

 

 

Applications:

 

MPPT Solar Controller DIY

7-24V Solar battery charging

12V Car battery charging

Mobile Loadspeaker

Electric Bicycle Charger

UPS DIY

Portable Industrial and Medical Equipment

Standalone Battery Chargers

Hand-held Equipment

Battery-Backup Systems

Portable Industrial and Medical Equipment

1-6Cells 3.6V LiFePO4 Battery

1-5Cells 4.2V lithium Battery

Lithium Titanate Batteries

How to adjust parameters(18V solar panel, charge 12.8V LiFePO4 Battery):


1 BAT+/BAT- is connected to a 100-200Ω resistor, VIN/GND is connected to the output of the solar panel, and a multimeter is used to measure the BAT+/BAT- port voltage.


2 If there is no voltage output at the BAT+/BAT- port, turn the MPPT potentiometer clockwise until there is just voltage output.


3 If there is voltage output at the BAT+/BAT- port, rotate the MPPT potentiometer counterclockwise until there is just voltage output.


4 Rotate the VOUT potentiometer to make the output 12.8V