Solar Panel Support - 10 watt to 100 watts solar panels having Open Circuit Voltage - 17v to 24 volts DC, Max Current - 10 Amperes.

Charging Controller - Op - Amp Controlled P - Channel MOSFET , Linear Voltage Control Charging with LDO ( low drop out ) of 0.7 volts. High Efficiency.

Battery Support - 1 Ah to 60 Ah Lead Acid or Sealed Lead Acid ( SLA ) Battery, Ni -Cd Battery, Lithium Battery.

Adjustable Charging Voltage - Charging Voltage Can be adjusted by RV1 as per battery type and requirement.

Battery Condition indicators - 3 LED indicators for Charging , Low Battery and Fully Charged conditions.

Reverse polarity Protection - Board will not turn on in case of reverse polarity of the solar panel connection .

Compact and Economical - PCB size just 8 cm x 5 cm. economical and easily available parts.

Easy to Repair - Very simple, Very Reliable Circuit. no MCU no hassle, easy to install easy to repair.