400W 12V StarPower Fixed Monocrystalline Solar Panel

This 400W 12V fixed monocrystalline solar panel is a rigid framed option for compatible caravan, RV, 4WD, shed, cabin and off-grid battery-charging installations.

Check before ordering: the panel measures 1480 × 680 × 35mm and weighs approximately 11.5kg. Confirm the mounting area, structural support and controller capacity for 22.2V open-circuit voltage and 23.7A short-circuit current.

Compare different construction types and installation options in StarPower’s main 400W solar panel range.

Key Features

• 400W rated peak power under standard test conditions
• Grade A monocrystalline cells
• 9-busbar cell layout
• Rigid framed construction for permanent mounting
• Compatible with lithium LiFePO4, AGM and deep-cycle battery charging when used with the correct controller

Technical Specifications

• Maximum Power: 400W
• Cell Technology: Monocrystalline
• Cell Class: Grade A
• Maximum Power Voltage (Vmp): 18.5V
• Maximum Power Current (Imp): 21.6A
• Open Circuit Voltage (Voc): 22.2V
• Short Circuit Current (Isc): 23.7A
• Maximum System Voltage: 1000V
• Operating Temperature: -40°C to 85°C
• Dimensions: 1480 × 680 × 35mm
• Net Weight: approximately 11.5kg
• Model: SPAST-400-12V

Suitable Applications

• Caravan and RV roof systems with suitable structural support
• 4WD canopies and camper trailers
• Sheds, cabins and remote battery systems
• Ground-mounted off-grid arrays

Controller and Battery Matching

Use a controller, DC-DC charger with solar input, or compatible hybrid inverter that can safely accept the panel voltage and current. The charging profile must suit the battery chemistry. Compare MPPT solar charge controllers and lithium batteries.

For multiple panels, recalculate the complete array: series wiring increases voltage and parallel wiring increases current. Use appropriately rated solar cable, connectors, fuses and isolation equipment.

What’s Included

• 1 × 400W 12V monocrystalline fixed solar panel

Mounting hardware, extension leads, controller, fuses, isolators and battery are not included unless stated separately in the offer.

Installation Notes

Provide secure structural support and follow the mounting instructions. Plan for cable routing, waterproof entries, service access and airflow around the panel. Vehicle, marine and permanent electrical work should be completed by a suitably qualified installer where required.

Real-World Output

The 400W rating is measured under standard test conditions. Actual output varies with sunlight, panel temperature, shade, angle, cleanliness, cable losses and controller efficiency.

FAQs

Can this panel charge a lithium battery?

Yes, when connected through a compatible controller with the correct lithium charging profile and sufficient PV input capacity.

Is a controller included?

No controller is listed as included with this panel. Select a compatible controller separately if your system does not already have one.

Can I connect multiple panels?

Yes, if the combined voltage and current remain within the controller or inverter limits and the wiring, protection and battery system are correctly sized.