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• 🔋 Typical 300 W Solar Panel Specifications

• Electrical Performance (at Standard Test Conditions – STC):

• Maximum Power (Pmax): ~300 W (rated power output under ideal conditions)

• Voltage at Maximum Power (Vmp): ~33 V to ~37 V

• Current at Maximum Power (Imp): ~8.3 A to ~9.0 A

• Open-Circuit Voltage (Voc): ~38 V to ~45 V

• Short-Circuit Current (Isc): ~8.8 A to ~9.8 A

• Power Tolerance: Typically ±3–5%

• Typical Efficiency: ~18% – 22% (monocrystalline)

• Nominal System Voltage: ~24 V or ~48 V systems

• Mechanical & Construction:

• Solar Cell Type: Monocrystalline (most common – higher efficiency) or Polycrystalline (lower cost).

• Frame: Anodized aluminum for strength and corrosion resistance.

• Front Glass: Tempered, high-transmittance glass.

• Junction Box: Weatherproof (often IP65/IP67).

• Connectors: MC4 or compatible plug-and-play connectors.

• Dimensions: Approx 1650 × 992 × 30–50 mm for typical mono panels.

• Weight: ~15–25 kg depending on build.

• Environmental & Durability:

• Operating Temperature: ~-40 °C to +85 °C

• Max System Voltage: Up to 1000 V DC (varies by manufacturer)

• Wind & Snow Load Ratings: Panels are tested to withstand typical environmental forces (wind/snow).

• 🌞 How These Specs Matter

• Voltage (Vmp/Voc): Affects how the panel pairs with a solar charge controller or inverter — ensure your controller can handle the panel’s open-circuit voltage.

• Current (Imp/Isc): Determines how much power the panel can deliver; higher current means more electricity at the same voltage.

• Efficiency: Higher efficiency means more power from the same surface area — useful when roof or panel space is limited.

• 📌 Typical Applications

• Residential rooftop systems (grid-tie or off-grid)

• RVs, boats, campers

• Charging solar batteries and power stations

• Small commercial systems