Kweli Energy 550Wp-1.63kWh-500W Off-Grid Solar Power System
The Kweli Energy 550Wp-1.63kWh-500W Complete Off-Grid Solar Power System provides reliable electricity for homes, shops, farms, offices and other locations where grid power is unavailable, unreliable or unnecessary.
During the day, the matched 550Wp solar array powers connected essential appliances while charging the integrated 1.63kWh lithium battery. Stored energy can then operate selected loads after sunset or during periods of reduced sunlight.
The system is built around the Blue Carbon Carbon BOX BCT-CB1.0, which combines battery storage, solar charging and a 500W AC inverter in one compact unit. Kweli Energy adds correctly selected PV protection, AC output protection and the necessary cabling to create a safer and more complete installation-ready off-grid power package. The Carbon BOX has a 19.2V, 85Ah lithium iron phosphate battery, accepts a matched 21-28V solar input and supports up to 550W of solar panels.
What This System Can Power
The system can support a carefully managed combination of essential appliances such as:
- LED lights
- Television and decoder
- WiFi router
- Mobile phones and tablets
- Laptop computer
- CCTV cameras and recorder
- Small fan
- Radio or small sound system
- Small office electronics
- Low-power DC and AC appliances
The total appliances operating simultaneously should remain within the system’s 500W AC output capacity.
Actual operating time depends on appliance consumption, battery charge level, available solar energy and how the loads are used throughout the day.
Appliances Not Recommended
This system is not designed for high-consumption or high-starting-current appliances such as:
- Electric kettles
- Flat irons
- Electric cookers
- Microwave ovens
- Water heaters
- Refrigerators and freezers, unless specifically assessed
- Air conditioners
- Water pumps
- Welding machines
- Heavy workshop equipment
These appliances may exceed the system’s 500W output or discharge the battery very quickly.
What Is Included
Solar Generation
- Matched solar panels with a combined capacity of 550Wp
- Solar-panel mounting accessories
- PV cables and compatible connectors
- Correctly selected solar-panel configuration for the 21-28V PV input
Energy Storage and Power Conversion
- Blue Carbon Carbon BOX BCT-CB1.0
- Integrated 1.632kWh lithium battery
- Integrated 500W AC inverter
- Integrated solar charging system
- Wall-mounting provision
PV Protection
- Appropriately sized PV circuit protection
- Solar DC isolation
- PV surge protection where required
- Weather-resistant protection enclosure
- Correctly sized solar cabling
AC Output Protection
- Appropriately sized AC circuit breaker
- AC isolation
- AC surge protection where required
- Protected AC output enclosure
- Correctly sized AC output cabling
The final quantities and cable lengths depend on the installation site and the distance between the solar panels, Carbon BOX and appliance distribution point.
Best For
- Off-grid homes
- Rural households
- Shops and kiosks
- Farms and plantations
- Market stalls
- Security and CCTV installations
- Small offices
- Staff quarters
- Holiday homes
- Locations where generator fuel is expensive
- Customers requiring quiet, fuel-free essential power
| Specification |
Details |
| System Brand |
Kweli Energy |
| Core Equipment Brand |
Blue Carbon |
| Core Equipment Model |
Carbon BOX BCT-CB1.0 |
| System Type |
Complete Off-Grid Solar Power System |
| Solar Array Capacity |
550Wp |
| Estimated Daily Solar Yield |
2-2.5kWh |
| Battery Energy |
1.632kWh |
| Battery Voltage |
19.2V |
| Battery Capacity |
85Ah |
| Battery Chemistry |
Lithium iron phosphate - LiFePO4 |
| AC Output Power |
500W |
| AC Output Voltage |
220V |
| PV Input Range |
21-28V |
| Maximum Supported PV Power |
550W |
| Grid Connection Required |
No |
| PV Protection |
Included |
| AC Output Protection |
Included |
| Required Cabling |
Included |
| Installation Type |
Compact wall-mounted system |
| Recommended Application |
Essential off-grid home, office, shop and farm loads |
The battery, AC output, PV input range and maximum supported solar power are based on the Blue Carbon Carbon BOX BCT-CB1.0 specifications.
How the System Works
- The 550Wp solar array generates electricity during daylight hours.
- Solar energy powers connected essential appliances.
- Available solar energy charges the integrated lithium battery.
- The battery supplies stored electricity after sunset or during reduced sunlight.
- PV protection safeguards the solar-input circuit.
- AC protection provides a safer output connection for the selected appliances.
Because this is an off-grid system, it does not automatically switch to grid power when the battery is depleted. Appliance use must therefore be managed according to available solar production and stored battery energy.
- Maximum appliance load: The combined AC load should remain below the system’s 500W output rating.
- Daily electricity use: The estimated 2-2.5kWh daily yield should be compared with the total energy required by your appliances.
- Battery autonomy: Night-time runtime depends on appliance consumption and how much battery energy was stored during the day.
- No grid backup: This is an off-grid system and does not rely on grid electricity when solar and battery power are insufficient.
- Starting surge: Motor-driven appliances may require significantly more power when starting and must be assessed before connection.
- Solar-panel compatibility: The panel configuration must remain within the system’s 21-28V PV input range.
- Solar conditions: Daily production depends on sunlight, panel orientation, shading, temperature and weather conditions.
- Future appliance additions: Customers planning to add refrigerators, pumps or heavier appliances should consider a larger system.
Installation and Commissioning
Professional installation by Kweli Energy is available at an additional cost and may include:
- Site and appliance assessment
- Solar-panel mounting
- Carbon BOX wall mounting
- PV cabling and connection
- PV protection installation
- AC output protection installation
- AC appliance-distribution connection
- Earthing where required
- System testing and commissioning
- Customer operating guidance
The final installation cost depends on the mounting location, cable distances, building layout and appliance-distribution requirements.
Free DeliveryFree delivery is available to selected locations where applicable.
2 Years WarrantyProduct warranty applies according to Kweli.shop terms and supplier/manufacturer coverage.
