SWD-250M-DB2024 250W 12V Dual-Battery Solar Kit, 20 | 4Boats

High-efficiency 250W 12 V monocrystalline solar kit for dual-battery systems in campers, motorhomes and boats; includes 20 A controller (DB2024) and cables. Model: SWD-250M-DB2024.

• High-efficiency 250W 12 V monocrystalline solar panel — ideal for permanent outdoor use and limited-space installs.
• Solar panel specifications: Peak power: 250W; Maximum power voltage (Vmp): 20.2 V; Maximum power current (Imp): 12.38 A; Open-circuit voltage (Voc): 23.9 V; Short-circuit current (Isc): 13.12 A; Power tolerance: ±3%; Dimensions: 1640 x 992 x 35 mm; Weight: 15.3 kg (33.7 lb); 8 mounting holes 9 x 14 mm; 2 x 5 m of high-quality single-core solar cable (2 x 16.4 ft).
• 20 A solar charge controller: The kit includes a 20 A 12 V/24 V dual-battery solar charge controller (DB2024) designed to charge and protect two batteries independently with automatic cut-off to prevent overcharge and selectable initial charging priority.
• Charge controller specifications: Rated charging current: 20 A; Fully automated operation and auto 12/24 V selection; PWM (Pulse Width Modulation) technology to increase charge acceptance and prolong battery life; protection features: overcharge, over-discharge, reverse polarity, short-circuit and reverse current protection.
• Controller electricals & size: Self-consumption: 4 mA at night, 10 mA when charging; Working temperature: -35 °C to +55 °C (-31 °F to +131 °F); Terminals for wire up to 4.0 mm² (≈12 AWG); Size: 15.5 x 7.6 x 4.0 cm; Weight: 230 g (0.51 lb); multiple mounting holes for ease of installation.
• Cabling and connectors: Two long high-temperature solar cables with MC4 connectors fitted for easy linking to other panels or systems. MC4 connectors may be removed when connecting directly to screw terminals on the charge controller, but do not cut live wiring. Safety: disconnect PV and battery circuits before modifying connectors, maintain correct polarity and add the recommended fuse on the positive supply to the battery.
• Please note: this is an essentials kit and does not include mounting accessories or battery cables.
• Shipping note: due to our warehouse arrangements, the solar charge controller may be shipped separately.
• Electrical connection: the solar charge controller included in this kit is supplied with a detailed user guide to assist the installation. Fitting: the solar panel in this kit can be fitted to a flat roof using metal brackets. User manual for DB2024 Photonic Universe 20 A 12 V/24 V automatic solar charge controller is available to download.
• Applications: Perfect for dual-battery setups (engine + leisure), remote power, pumps or direct-drive loads not sensitive to input variation; set initial charging priority and let the controller manage charging automatically.

Care & compatibility: Regularly clean the panel surface and check cable connections; ensure battery bank, fuses and wiring are sized correctly for the 20 A controller and 250 W panel. Verify any IP rating and full panel dimensions from the datasheet before installation.

• Q: Which battery types are compatible? A: Lead-acid (flooded), AGM and gel batteries are supported; refer to the controller manual for specific charging profiles.
• Q: Can the panel be mounted on an RV or boat roof? A: Yes — the panel fits flat roofs using metal brackets; ensure adequate drainage and secure mounting points.
• Q: What fuse size is recommended? A: Fit a properly rated fuse on the positive battery feed sized for the system wiring and 20 A controller to protect the circuit.