MPPT LiPo/Li-Ion charger module CN3795 - can be stand alone charger controller or charger module from a photo solar cell.

Specification:

• maximum input voltage 25V
• built-in MPPT algorithm when the input is from photo solar
  
• maximum current of charging (output current) 4А
  
• support one or a few batteries ( in series circuit)
• support of LiPo/LiFePO4/Li-Ion (multi-chemistry battery) batteries
• LED indication while charging
• biult-in protection of reversing polarity of the input voltage
  
• protection of overvoltage on the input
• built-in current protection
  
• module can work in mode "stand alone charger"
• adjustment of the output voltage