Rich Solar 335 PRO ONYX | 335 Watt Solar Panel | Premium Grid-tie or Off-grid Solar Panel for Residential, Commercial, Agriculture - RS-M335PB-8
Features
- Generates 11.5 amps of power, charges 24-volt batteries, 3' quick connect cables with connectors, and works in series or parallel.
- Excellent low-light performance even on early mornings, evenings, and cloudy days.
- Built with strong high transmission “anti-reflective” coated tempered glass and an anodized aluminum frame.
- Fast and easy installation thanks to 14 pre-drilled holes that are compatible with standard Z-brackets, ground mounts, side pole mounts, and tilt mounts.
- 25-year power output warranty and a 10-year workmanship warranty.
- Easy installation and handling for various applications.
- Pre-drilled holes compatible with ground mounts, Z-brackets, pole mounts and tilt mounts.
- Compatible with on-grid and off-grid inverters.
Built-in Components
- Panel leads (pair): 3 feet each
- IP67-rated waterproof junction box
- IP67-rated waterproof solar connectors
- Bypass diodes built into the junction box
Specifications
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Maximum Power(Pmax): 335W
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Maximum Power Voltage(Vmp): 29.2V
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Maximum Power Current(Imp): 11.5A
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Open Circuit Voltage(Voc): 36.9V
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Short Circuit Current(Isc): 11.8A
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Maximum System Voltage(Vmax): 1500VDC
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Temperature Range: -40°F ~ 185°F
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Max Series Fuse Rating: 20A
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Dimensions: 69.3 x 34.7 x 1.2 in
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Weight: 35.2 lb
What our Experts Think
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Strong mid-size off-grid solution – The Rich Solar 4000W kit delivers a solid balance of power and affordability, making it ideal for small homes, cabins, RV setups, and essential backup power systems.
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Reliable 4kW pure sine wave output – With 120V AC output at 4000W capacity, it can comfortably run everyday essentials like refrigerators, lights, fans, routers, TVs, and small power tools.
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Efficient 48V system design – The 48VDC architecture improves energy efficiency, reduces current load on cables, and supports more stable performance compared to lower-voltage systems.
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Good entry point for solar independence – Designed for users transitioning away from grid dependence or reducing generator use, this kit provides a practical foundation for off-grid living.
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Compatible with expandable setups – The system can be scaled over time with additional solar panels and battery storage as energy needs grow.
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Simplified installation approach – Pre-matched components help reduce compatibility issues, making it easier for installers or DIY users to deploy a working system faster.
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Balanced performance for daily use – Well-suited for moderate household loads and intermittent heavy use, rather than whole-home high-demand applications.
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Dependable backup power option – Works effectively as an emergency power system during outages, ensuring critical devices stay operational.
Q&A
Q: What is included in the Rich Solar RS-CBK4000 4000W Off-Grid Solar Kit?
A: The kit includes a 6,500W 48V hybrid inverter, 10 x 410W MEGA solar panels (4,100W total), 4 x 5.12kWh LiFePO4 batteries (20.48kWh storage), busbars, battery cables, extension cables, DC disconnect, and full installation accessories.
Q: What power output does the RS-CBK4000 system provide?
A: It delivers up to 4,000W continuous AC output at 120V from a 48V off-grid system, suitable for cabins, RVs, small homes, and backup power.
Q: How much solar generation does the system have?
A: The included solar array provides approximately 4,100W of PV capacity using high-efficiency 410W monocrystalline panels.
Q: What battery storage capacity is included?
A: The system includes four 51.2V 100Ah LiFePO4 batteries, delivering a total of about 20.48kWh of usable energy storage for nighttime and backup use.
Q: What type of inverter is used in this kit?
A: It uses a 48V pure sine wave hybrid inverter with MPPT solar charging, designed for off-grid and hybrid (solar + generator/grid) operation with stable AC output.
Q: Can this system be expanded in the future?
A: Yes. The inverter supports parallel operation and the battery bank can be expanded for higher capacity, making it scalable for larger energy needs.
Q: What can this solar kit power?
A: It can run essential home loads such as lights, refrigerators, fans, TVs, small appliances, pumps, and electronics—ideal for off-grid living or emergency backup.
Maintenance Tips
- Clean solar panels every 1–3 months using clean water and a soft brush or microfiber cloth to remove dust, bird droppings, and debris for maximum efficiency.
- Inspect mounting structure, wiring, MC4 connectors, and DC isolators quarterly to ensure tight, corrosion-free, and safe electrical connections.
- Monitor inverter status regularly for fault codes, overheating warnings, and performance drops; address issues immediately to avoid system downtime.
- Keep inverter ventilation areas clean and unobstructed to maintain proper cooling and prevent thermal shutdown.
- Check battery (if included in configuration) monthly for state of charge, voltage stability, and terminal tightness to ensure long lifespan.
- Avoid deep discharging batteries and follow recommended charge/discharge ranges for LiFePO4 or lead-acid storage systems.
- Trim nearby trees or remove shading sources to maintain consistent solar generation throughout the day.
- Inspect breakers, surge protection devices, and grounding system every 6–12 months for safety and compliance.
Damage 
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