400 Watt 12V 10BB Bifacial Solar Panels
how does a bi-facial module work?
200w 12v bifacial solar panels
smaller space more effincent
400 Watt 12V 10BB Bifacial Solar Panels
how does a bi-facial module work?
200w 12v bifacial solar panels
smaller space more effincent

400 Watt 12V 10BB Bifacial Solar Panels

Regular price $399.99
Sale price $399.99 Regular price
Unit price
About this item

  • Double Sided Solar Panel Innovation】 Have you ever seen solar panels with transparent backsheet design? This upgraded solar system, compared to the traditional backsheet, realizes the breakthrough of front and back double-sided power generation! It not only improves the efficiency by at least 5%, but also demonstrates the excellence of the technology!
  • 10BB Solar Cell Technology】Whether to choose 9BB or 5BB solar panels, 10BB technology has made a strong debut! Its anti-shading performance is stronger and its power generation far exceeds the average 5BB solar cell. After rigorous EL testing, 10BB solar cells are definitely the smart choice for your solar system.
  • Durable Solar Panel】This 12V 400W double sided solar panel is equipped with black corrosion-resistant aluminum frame, which is not only beautiful, but also able to withstand strong winds up to 2400Pa and snow loads up to 5400Pa. IP65 and IP67 waterproof design ensures stable operation in outdoor environments, so you can use it without worry.
  • Convenient Installation Design】Each 12V solar panel is pre-designed with pre-drilled holes, making the installation process easy and simple. No matter what the application scenario, it can perfectly meet your installation needs and match perfectly with the adjustable tilt bracket.
  • Long-term Warranty Commitment】We, as a professional solar energy system manufacturer, promise to provide up to 30 years transferable power output warranty. No matter what problems you encounter, our solar panel service team will actively provide you with professional off-grid system solutions to ensure that your investment is protected for a long time.
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  • Estimated Delivery:Jul 20 - Jul 24

  • Free Shipping & Returns: On all orders over $100

400 Watt 12V 10BB Bifacial Solar Panels

400 Watt 12V 10BB Bifacial Solar Panels

Shipping and Refund
Warranty Policy
200 Watt 12V Bifacial Solar Panels

This high-efficiency 400W solar panel, it combines cutting-edge photovoltaic technology with exquisite craftsmanship. The core of the kit consists of two pieces of 200W solar panel modules, each of which has been rigorously screened and tested to ensure stable and efficient power generation under various light conditions.

The combination of the two panel modules not only brings the total power to 400W, but also provides a significant improvement in power generation efficiency and stability. This kit is perfect for a wide range of application scenarios such as homes and businesses, and can bring you long-lasting and reliable power support, whether it is used as a main power source or a backup power source.

200w Bifacial Solar Panel Specifications

Max Power at STC: 200W
Open Circuit Voltage: 28.1V
Short Circuit Current: 9.12A
Optimum Operating Voltage: 23.4V
Optimum Operating Current: 8.55A
Operating Temperature: -40°F to 194°F (-40℃ to +90℃)
Maximum Series Fuse Rating: 15A
Solar Cells: 84 Cells
Output Cable: 12 AWG
Junction Box: IP65 Waterproof
Connectors: MC-4
Product Dimensions: 53.7 x30.3 x 1.4 in
Product Weight: 24.9 lbs (11.3KG


Passes EL test without any microcracks
200 Watt 12 Volt 10BB Bifacial Solar Panel

This bifacial solar panel performs best when installed near highly reflective surfaces. Such as swimming pools glass, sandy, stony or snowy areas. Although the front of the panel still absorbs the majority of the sunlight, the bifacial models are capable of increasing energy production by 5%-20%. The exact amount of extra energy will depend on the environment surrounding the solar panels themselves.

200 Watt 12V Bifacial Solar Panels


Question 1: What is 400W bifacial solar panel?

Answer: 400W bifacial solar panel is a photovoltaic device that can simultaneously absorb and convert sunlight into electricity from both the front and back sides. Compared to traditional single-sided solar panels, bifacial solar panels are able to generate more power in the same installation area, thus improving energy collection efficiency.

Question 2: How does the power generation efficiency of 400W bifacial solar panel increase?

Answer: 400W bifacial solar panel realizes the front and back double-sided power generation function by adopting specially designed transparent backsheet material and high-efficiency photovoltaic technology. This design allows the solar panel to utilize both direct and reflected light, thus improving the overall power generation efficiency. According to experimental data, the power generation efficiency of bifacial solar panels has increased by at least 5% compared to traditional single panels.

Question 3: How much wind and snow pressure can a 400W bifacial solar panel resist?

Answer: 400W bifacial solar panels are usually equipped with sturdy frames and protective structures that can resist strong wind and snow pressure. The exact resistance depends on the design and manufacturing quality of the product. Generally speaking, high-quality 400W bifacial solar panels are able to resist wind pressure of 2400Pa and snow load of 5400Pa.

Question 4: How to install 400W bifacial solar panel?

Answer: There are certain steps and specifications that need to be followed to install 400W bifacial solar panels. First of all, you need to choose a suitable mounting position and angle to ensure that the solar panel can maximize the reception of sunlight. Then, according to the installation instructions of the product, use the prefabricated brackets and fixings to fix the solar panel in the installation position. During the installation process, care needs to be taken to avoid damaging the surface and internal structure of the solar panel.

TOPBULL Shipping and Refund Policy

Shipping Policy:

1. Shipping Methods:

We have local warehouses in the United States and Europe, North American orders will be shipped from the U.S. warehouse, European orders will be shipped from Germany or Italy, all packages will arrive at the customer in 3-10 days after shipment. We offer several shipping methods to meet your delivery needs. The shipping options and estimated delivery dates will be provided during the checkout process.

2. Order Processing Time:

Please allow 1-3 business days for order processing. Once your order has been shipped, you will receive a confirmation email with tracking information.

3. Shipping Rates:

Shipping rates are calculated based on the weight of your order and the selected shipping method. The total shipping cost will be displayed during the checkout process.

Country Estimated delivery time Order 0-100 USD Shipping Rates Order above 100 USD Shipping Rates
USA 3-15 Natural Days 10 USD 0
Canada 3-15 Natural Days 10 USD 0
United Kingdom 3-15 Natural Days 10 USD 0
France 3-15 Natural Days 10 USD 0
Germany 3-15 Natural Days 10 USD 0
Italy 3-15 Natural Days 10 USD 0
Spain 3-15 Natural Days 10 USD 0
Australia 3-15 Natural Days 10 USD 0

4. Free Shipping Policy:

For orders over $100, we offer free shipping.

5. International Shipping:

We currently offer international shipping to select countries. International shipping rates and delivery times vary. Customs and import duties may apply and are the responsibility of the customer.

We currently ship to the United States, Canada, United Kingdom, France, Germany, Italy, Spain, and Australia (excluding islands and remote areas).

6.Customs Duty

All customs duties and taxes are the responsibility of the consumer, the specific cost of each country's customs policies

7. Tracking Your Order:

You can track your order by using the tracking number provided in the shipping confirmation email. If you have any issues with tracking your order, please contact our customer support.

Refund Policy:

1. Returns:

We accept returns within 30 days of the purchase date. To be eligible for a return, the item must be unused and in the same condition as received. It must also be in the original packaging.

2. Refund Process:

Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.

3. Refund Timeframe:

Refunds will be processed within 7-10 business days of receiving the returned item. The refund will be issued to the original payment method.Refunds will be returned to your account within 3-15 business days after we initiate them.

4. Exchanges:

If you need to exchange an item, please contact our customer support service@topbullshop.com. Exchanges are subject to product availability.

5. Return Shipping:

Customers are responsible for return shipping costs unless the return is due to an error on our part.

6. Damaged or Defective Items:

If you receive a damaged or defective item, please contact our customer support immediately. We will provide instructions on how to return the item for a replacement or refund.

TOPBULL warranty

1. Limited Warranty:

TOPBULL offers a limited warranty on all products against defects in materials and workmanship under normal use for a period of 1 year. The warranty period starts from the date of purchase.

2. Warranty Coverage:

This warranty covers defects in materials and workmanship of the product under normal use. It does not cover damage caused by accident, misuse, neglect, unauthorized modifications, or any other circumstances beyond normal wear and tear.

3. How to Claim Warranty:

To initiate a warranty claim, please contact our customer support at service@topbullshop.com within the warranty period. Provide your order number, a detailed description of the issue, and, if possible, attach relevant photographs.

4. Evaluation and Resolution:

Our customer support team will evaluate the warranty claim and determine the appropriate course of action. This may include repair, replacement, or refund at the discretion of TOPBULL.

5. Return of Defective Product:

If requested, you may need to return the defective product. Instructions for the return process will be provided by our customer support team. Customers are responsible for the cost of returning the item.

6. Exclusions:

The warranty does not cover normal wear and tear, damages resulting from improper maintenance, unauthorized repairs, or modifications. It also does not cover incidental or consequential damages.

7. Warranty Transferability:

This warranty is non-transferable and is only applicable to the original purchaser of the product.

8. Duration of Implied Warranties:

To the extent permitted by law, any implied warranties, including the implied warranties of merchantability and fitness for a particular purpose, are limited to the duration of this express warranty.

9. Additional Terms:

TOPBULL reserves the right to update or modify the terms of this warranty policy without prior notice. Any changes will be effective immediately upon posting on our website.
If you have any questions or concerns regarding our warranty policy, please contact our customer support team at service@topbullshop.com for assistance.

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