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You are comparing the callsun 400w 4 pack n type solar vs 360w bifacial solar panel to find the right setup for your off-grid needs. Both use N-Type 16BB monocrystalline cells with 25% efficiency and IP68 ratings for durability. The main difference lies in their configuration and light capture. The first option offers four smaller panels totaling 400W, while the second provides two larger bifacial panels for 360W. Each design serves different space and mounting requirements.
Total Wattage
400W
360W
Panel Count
4-Pack
2-Pack
Design
Monocrystalline
Bifacial
Total Weight
46.8 lbs
20.9 lbs
Dimensions (Each)
31.1 x 22.7 inches
46.5 x 30.3 inches
Choose the first if
- You need maximum power output from a compact footprint using multiple smaller panels.
- You want to distribute weight across a larger surface area on an RV roof.
- You prefer a traditional monocrystalline setup without bifacial light gain.
Choose the second if
- You are mounting panels on the ground or a tilted rack to capture reflected light.
- You need a lighter total weight for easier handling and installation.
- You want higher individual panel wattage with fewer units to manage.
Verdict
Choose the 400W 4-pack if you need higher total wattage and can manage more individual panels. Pick the 360W bifacial set if you have ground-mounting options to boost efficiency or prefer a lighter, simpler two-panel system. Both offer robust N-Type cells and weather resistance for long-term use.
Callsun Solar Panel Spec Breakdown
Total power output
Edge: Callsun 400W 4-Pack N-Type Solar Panels
The Callsun 400W 4-Pack delivers a combined 400 watts of power. It includes four individual 100W panels that you can configure together. This setup provides a higher total wattage for charging larger battery banks or running more devices simultaneously. The Callsun 360W Bifacial kit provides 360 watts total. It consists of two 180W panels. While still robust, the 400W pack offers 40 watts more capacity. You get more raw power generation with the four-panel configuration. This extra output helps you reach your energy goals faster or maintain power during periods of lower sunlight intensity.
Physical dimensions
Edge: Callsun 400W 4-Pack N-Type Solar Panels
Size matters when you are mounting panels on an RV roof or a small cabin. The Callsun 400W panels are compact, measuring 31.1 inches in length and 22.7 inches in width. Each single panel weighs 11.4 pounds. The four-pack totals 46.8 pounds. The Callsun 360W Bifacial panels are larger individually. Each 180W panel measures 46.5 inches by 30.3 inches and weighs 20.9 pounds. The bifacial design requires more surface area per watt. The 400W pack uses smaller, modular units. This allows you to fit them into tighter spaces or arrange them in different configurations on limited roof space.
Bifacial capability
Edge: Callsun 180W N-Type Bifacial Solar Panel
The Callsun 360W Bifacial Solar Panel features a unique bifacial design. It captures sunlight from both the front and the back. This allows it to generate up to 30% extra energy from light reflected off the ground, snow, or white roofing. This gain is significant if you mount the panels on a tilted ground array or a reflective surface. The Callsun 400W 4-Pack uses standard monocrystalline cells. It captures light only from the front side. It does not offer the additional energy boost from rear-side illumination. If you have a ground-mounted setup or a highly reflective roof, the bifacial model provides a distinct efficiency advantage.
Weight and handling
Edge: Callsun 400W 4-Pack N-Type Solar Panels
Installation effort depends heavily on weight. The Callsun 400W 4-Pack weighs 46.8 pounds in total. However, you handle four separate units, each weighing just 11.4 pounds. This makes individual handling easier for one person. The Callsun 360W Bifacial kit weighs 20.9 pounds per panel. Since it comes in a two-pack, the total weight is 41.8 pounds. The individual panels are heavier at 20.9 pounds each. You might find the 400W pack easier to manage during installation because the individual units are lighter. The bifacial panels are heavier per unit, which may require two people for safe mounting.
Voltage compatibility
Edge: Callsun 400W 4-Pack N-Type Solar Panels
Both products support 12V systems, which is standard for RVs and small off-grid setups. The Callsun 400W 4-Pack lists system voltage compatibility for 12V, 24V, and 48V systems. This flexibility allows you to integrate it into larger battery banks or more complex electrical architectures. The Callsun 360W Bifacial panel lists 12V system voltage. It is optimized for standard 12V configurations. If you plan to expand your system to 24V or 48V in the future, the 400W pack offers broader voltage compatibility. For a simple 12V setup, both work effectively.
Choose the right Callsun panel
RV owners with limited roof space
Our pick: Callsun 400W 4-Pack N-Type Solar Panels
The 400W 4-Pack offers compact 31.1 by 22.7-inch panels. Each unit weighs just 11.4 lbs. This makes mounting on curved RV roofs much easier. You get four separate panels for flexible layout. The lower profile fits tight spaces better than larger single units. This setup adapts well to irregular roof shapes on vehicles.
Ground mount solar system builders
Our pick: Callsun 180W N-Type Bifacial Solar Panel
The bifacial design captures reflected light from the ground. This boosts daily production by up to 30% without extra hardware. The 180W panels are larger at 46.5 inches long. This size is ideal for ground arrays or tilted mounts. You gain extra energy from snow or gravel reflection. This feature maximizes output in open outdoor environments.
Users needing maximum total wattage
Our pick: Callsun 400W 4-Pack N-Type Solar Panels
The 400W 4-Pack delivers a higher combined total of 400 watts. This provides more raw power for larger battery banks. You can configure four smaller panels to suit your needs. The higher total wattage supports more appliances simultaneously. This makes it suitable for systems requiring substantial daily energy input. You get more total power output from the same brand.
Callsun 400W 4-Pack N-Type Solar Panels
Best for: Compact RV and off-grid solar needs
- Rated Wattage
- 400W
- Cell Efficiency
- Up to 25%
- Cell Type
- N-Type 16BB Monocrystalline
- System Voltage
- 12V/24V/48V
- IP Rating
- IP68
- Weight
- 46.8 lbs
This Callsun 400W kit includes four 100W N-Type 16BB monocrystalline panels. Each panel reaches 25% efficiency and weighs 11.4 lbs. The set totals 46.8 lbs with dimensions of 31.1 x 22.7 inches. It features IP68 waterproofing and handles 5400 Pa snow loads. You get stable output in heat thanks to a -0.3%/°C temperature coefficient. This setup suits RVs, boats, and off-grid cabins where space is limited.
- 25% cell efficiency with N-Type 16BB technology
- IP68 waterproof rating and reinforced corner guards
- Low temperature coefficient of -0.3%/°C for hot climates
- Supports 5400 Pa snow and 2400 Pa wind loads
- Compact 31.1 x 22.7 inch size per panel
- Lower 25% efficiency compared to bifacial panels in the comparison
- Heavier total weight of 46.8 lbs for the full kit
- Single black color option available in this pack
- You need a lightweight 400W array for an RV roof
- You operate in high-temperature environments like deserts
- You require IP68 waterproofing for outdoor marine use
- You prioritize maximum efficiency per square inch
- You need bifacial light absorption for dual-sided gain
- You prefer a single heavy-duty panel over a multi-pack
Verdict: Callsun 400W 100W 4-Pack Solar Panel delivers reliable power for compact off-grid setups. It fits well in hot climates where temperature stability matters more than peak efficiency.
Callsun 180W N-Type Bifacial Solar Panel
Best for: durable off-grid ground or roof mounts
- Rated Wattage
- 180W
- Cell Efficiency
- 25%
- Cell Type
- N-Type 16BB
- System Voltage
- 12V
- IP Rating
- IP68
- Weight
- 20.9 lbs
This Callsun kit includes two 180W N-Type panels for a total of 360W. The bifacial design captures reflected light for up to 30% extra gain. It features an IP68 rating and handles 5400Pa snow loads. The 25% cell efficiency and -0.3%/°C temperature coefficient ensure stable output. This setup suits off-grid RVs, sheds, or tiny homes needing durable, weather-resistant power.
- Bifacial design captures reflected light for up to 30% extra energy gain
- IP68 rating and reinforced frames withstand heavy snow loads up to 5400Pa
- N-Type 16BB cells offer 25% efficiency and resist degradation better than P-Type
- -0.3%/°C temperature coefficient maintains power output during summer heatwaves
- Total 360W output is lower than the 400W option on this list
- Each 180W panel weighs 20.9 lbs, making the pair heavier than lighter alternatives
- Includes only two panels, whereas the competing kit provides four
- You need a durable, weather-resistant setup for permanent ground or roof mounting
- You want to maximize energy from reflected light in open or snowy areas
- You prefer N-Type cells for better heat stability and longevity
- You need the highest possible wattage per kit on this list
- You prefer a larger number of panels for easier modular expansion
- You require a lighter, more portable solution for frequent travel
Verdict: Callsun 360W Bifacial Solar Panel Kit offers robust durability and bifacial gain for permanent off-grid installations. It fits buyers who prioritize weather resistance and heat stability over raw wattage or panel count.
Specifications side by side
| Spec | Callsun 400W 4-Pack N-Type Solar Panels | Callsun 180W N-Type Bifacial Solar Panel |
|---|---|---|
| Rated Wattage | 400W | 180W |
| Cell Efficiency | Up to 25% | 25% |
| Cell Type | N-Type 16BB Monocrystalline | N-Type 16BB |
| System Voltage | 12V/24V/48V | 12V |
| IP Rating | IP68 | IP68 |
| Weight | 46.8 lbs | 20.9 lbs |
| Intended Use | Home, RV, Home Backup, Off-Grid | Home, RV, Off-Grid |
| Voltage | 12V | 12V |
| Wattage | 400W | – |
| Recommended Use | Off-Grid Systems, Rooftops | Off-Grid Systems, Rooftops |
| Design | – | Bifacial |
| Dimensions | 31.1 × 22.7 × 1.1 inches | 46.5 × 30.3 × 1.58 inches |
| Size | 100w 4-Pack Panel | 180W |
| Color | Black | Black |
| Model | Callsun-DB100W | CS180W |
Frequently asked questions
Which Callsun solar panel is better for hot climates?
The Callsun 400W 4-Pack is better for hot climates. It delivers reliable power where temperature stability matters more than peak efficiency. N-Type cells handle heat well. This makes the 100W units a stable choice for off-grid systems in warm regions.
How do the physical dimensions compare between the two models?
The 400W 4-Pack uses smaller individual panels measuring 31.1 by 22.7 inches. The 180W Bifacial model is larger at 46.5 by 30.3 inches. You can arrange the four smaller panels flexibly. The single bifacial unit requires a larger continuous mounting area.
Which panel is lighter and easier to handle?
The 180W Bifacial panel is lighter. It weighs 20.9 pounds total. Each 100W panel in the 4-Pack weighs 11.4 pounds, totaling 46.8 pounds for the set. The lighter bifacial unit is easier to move alone. The 4-Pack requires handling four separate units.
Can I use these panels for RV camping?
Yes, both are suitable for RVs. The 400W 4-Pack fits compact RV needs with its small footprint. The 180W Bifacial panel is durable for ground or roof mounts. Both support 12V systems. Choose the 4-Pack for flexible layout on curved roofs.
What is the difference in cell technology used?
Both use N-Type monocrystalline cells. The 400W 4-Pack uses 100W panels. The 180W Bifacial model uses bifacial design to capture light from both sides. Both offer 25% efficiency. The bifacial design adds durability and potential gain in permanent installations.
Which option provides more total wattage?
The Callsun 400W 4-Pack provides more total power. It delivers 400 watts combined. The 180W Bifacial panel offers 180 watts. If you need to charge larger battery banks, the 4-Pack is the stronger choice. It supports higher energy demands for off-grid setups.
Are these panels suitable for rooftop installation?
Yes, both are recommended for rooftops. The 400W 4-Pack is ideal for off-grid rooftops with limited space. The 180W Bifacial panel is robust for permanent rooftop mounts. Both have IP68 ratings for weather resistance. They are built to withstand outdoor exposure.
Which panel is better for durable ground mounts?
The 180W Bifacial panel is better for durable ground mounts. It offers robust durability and bifacial gain. It fits buyers who prioritize weather resistance. The 400W 4-Pack is lighter but requires more setup. The bifacial unit is a solid choice for fixed ground installations.
