2.5A MPPT Solar Charging Controller Board Module with 5V/2.1A USB Output, for Single/Parallel 3.7V-4.2V Batteries

2.5A MPPT Solar Charging Controller Board Module with 5V/2.1A USB Output, for Single/Parallel 3.7V-4.2V Batteries Description

Supports 5V-18V (10W-30W) solar panel input with reverse polarity and backflow protection
Charges 3.7V Li-ion 18650 batteries (BMS optional, not required)
USB output: 5V/2.1A with low-voltage cutoff protection
Battery level indicator activated by button press
MPPT technology for higher charging efficiency

Features:
Supports 5V-18V (10W-30W) solar panel input with reverse polarity and backflow protection
Charges 3.7V Li-ion 18650 batteries (BMS optional, not required)
USB output: 5V/2.1A with low-voltage cutoff protection
Battery level indicator activated by button press
MPPT technology for higher charging efficiency
Quick Guide:
Set the jumper to match your solar panel's voltage before use.
Connect the battery, ensuring correct polarity.
USB output requires a battery to be connected for stable operation.
Press the button to check battery level and activate USB output after charging.
USB will automatically turn off when battery is depleted and will not restart without pressing the button.
Note: Do not use USB output without a battery connected.
Color: As Shown
Material: PC

Package Contents:
1* Module