The 5A MPPT Solar Panel Charging Module with Display has a variety of applications including a DIY voltage regulator, charging module for a variety of batteries, step down convertor and power supply for electronic devices.
Note: Detection module, please do not directly connect the output of negative electrode and the input of negative electrode. use a diode between the battery and the board

• Lithium-ion (Li-ion) / Lithium Polymer (Li-Po)
  
  • Typical Voltage: 3.7V nominal (4.2V fully charged)
  • Configuration Example:
  • 1S (4.2V), 2S (8.4V), 3S (12.6V), etc.
    
    • Charging Method: CC-CV is ideal
  • ✅ Yes, fully compatible (with voltage carefully set per cell count)

• LiFePO₄ (Lithium Iron Phosphate)
  
  • Typical Voltage: 3.2V nominal (3.65V full)
  • Configuration Example:
    
    • 1S (3.65V), 4S (14.6V), etc.
  • Charging Method: CC-CV, but lower voltage than Li-ion
  • ✅ Yes, just set voltage to 3.65V per cell
• 3. Lead-Acid (SLA, AGM, Gel)
  
  • Typical Voltage: 6V, 12V, 24V
  • Charging Method: CC-CV is suitable
• ✅ Yes, set voltage accordingly (e.g., 13.8–14.4V for 12V battery)
• NiMH / NiCd

❌ Not recommended: These require pulse or delta-V detection, not CC/CV. You could trickle-charge them, but it's inefficient and risks damaging the cells.

⚠️ Important Usage Notes

• Always use a battery management system (BMS), especially with Li-ion or LiFePO₄ packs.
• Set the voltage limit exactly to prevent overcharging (e.g., 12.6V for 3S Li-ion).
• Set a safe current level — typically 0.5C to 1C of battery capacity. For example:
• A 2000mAh (2Ah) battery: max safe charging current = 1A–2A

• Module Properties: Non-isolated buck module
• Input voltage: 6-36V DC
• Output voltage: 1.25-32V DC continuously adjustable (the default output 5V)
• MPPT voltage setting range: 6-36V
• Output current range: 0.05-5A (The default output current is 3A)
• Turn lights output range: 0.01-5A (default turn lamp current 0.3A) the current range will be a little difference because the parts parameter error.
• Multifunction double display: input voltage, output voltage, output current
• Operating temperature: -40 to + 85 degree
• Operating frequency: 180KHz
• Conversion efficiency: up to 95% (efficiency, input & output voltage, current and pressure-related)
• Short circuit protection: Yes
• Over temperature protection: (automatically shut off the output after over temperature)
• Input reverse polarity protection: None, (if necessary, please add the string into the diode)
• Output anti-anti-irrigation protection: no, the output must be connected to the battery plus blocking diode, otherwise it will burn the module!
• Charging indicator: charging red, bright green when fully charged. Turn lamp is the output current detection.
• Size: 60 x 31 x 22 mm

Applications:

• DIY a voltage Regulator, with constant current function, Short-circuit proof, can protect the load.
• Power supply for electronic devices.
• For a variety of battery chargers, can observe the state of charge.
• Charger for various types of batteries, with MPPT function, can enhance the charging current to double. With a constant current and prevents battery overcharge, effective protection of the battery.
• Can support high-power LED.

Package includes:

• 1 x 5A MPPT Solar Controller

1. Datasheet - BDD DC/DC BUCK/MPPT SOLAR 5A+DIS