12V 100W Compact Solar Charge Controller Board PCB only

Solar Charge Controller PCB Board (100 w)

This PCB is designed for solar battery charging applications using linear voltage control. Charging performance depends on component selection and proper configuration.

Solar Input:

• Supported solar panel power: 10 W to 100 W
• Open circuit voltage (Voc): 17 V to 24 V DC
• Maximum input current: up to 10 A

Charging Configuration:

• Charging method: linear voltage control using op-amp controlled P-channel MOSFET
• Low dropout operation: approximately 0.7 V (depends on components used)
• Adjustable charging voltage via onboard preset (RV1), depending on battery type

Battery Compatibility:

• Supports batteries from 1 Ah to 60 Ah
• Compatible with Lead Acid and Sealed Lead Acid (SLA) batteries
• Can be configured for other battery types (e.g., Ni-Cd, Lithium) with appropriate voltage settings and precautions

Protection and Indication:

• Reverse polarity protection (prevents operation if solar input is reversed)
• LED indicators for:
  • Charging status
  • Low battery condition
  • Fully charged status

Board Specifications:

• PCB dimensions: 8 cm × 5 cm
• Uses standard through-hole components

Configuration:

• Bare PCB (components not included)
• No microcontroller used; analog control-based design
• Charging voltage and behavior depend on component values and adjustment

Intended Use:

• Solar battery charging systems for small to medium capacity batteries
• Off-grid and backup power applications
• DIY solar power and battery management projects