250w Monocrystalline PV Solar Panel with Wholesale Price CNBM for Solar Panels on EPDM Roof

250w Monocrystalline PV Solar Panel with Wholesale Price CNBM for Solar Panels on EPDM Roof

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Loading Port:: Qingdao

Payment Terms:: TT OR LC

Min Order Qty:: 10 set

Supply Capability:: 300000 set/month

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250W Monocrystalline PV Solar Panel Wholesale

250W Monocrystalline PV Solar Panel with Wholesale Price CNBM

Quick Details

Place of Origin:	China (Mainland)	Brand Name:	CNBM	Model Number:	XRP-156M-250W
Material:	Monocrystalline Silicon	Size:	1620x992x40mm	Number of Cells:	60
Max. Power:	250w	Optimum Operating Voltage (Vmp):	28.8V	Optimum Operating Current (Imp):	8.68A
Open Circuit Voltage (Voc):	36V	Short Circuit Current (Isc):	8.87A	Maximum Power at STC (Pmax):	250W
Operating Module Temperature:	-40 °C to +85 °C	Maximum System Voltage:	1000 V DC (IEC) / 600V DC (UL)	Maximum Series Fuse Rating:	15A

Packaging & Delivery

Delivery Detail:

two weeks after order confirmation

Features:

1) High Module conversion efficiency, through superior manufacturing technology

2) 0 to +5W positive tolerance for mainstream products

3) Certified to withstand high wind loads and snow loads

4) Anodized aluminum is for improving corrosion resistance

5) Anti-reflective, Highly transparent, low iron tempered glass

6) Excellent performance under low light environment

Benefit:

25-year performance warrant

10-year Product warranty

Electrical Characteristics:

Item No.	XRM-250W
Optimum Operating Voltage (Vmp)	28.8V
Optimum Operating Current (Imp)	8.68A
Open Circuit Voltage (Voc)	36V
Short Circuit Current (Isc)	8.87A
Maximum Power at STC (Pmax)	250W
Cell Efficiency	17.70%
Operating Module Temperature	-40 °C to +85 °C
Maximum System Voltage	1000 V DC (IEC) / 600V DC (UL)
Maximum Series Fuse Rating	15A
Power Tolerance	0/+5 %

STC: lrradiance 1000 W/m2, module temperature 25 °C, AM=1.5;

Best in Class AAA solar simulator (IEC 60904-9) used, power measurement uncertainty is within +/- 3%

Mechanical Characteristics:

No. of Cells	60(6X10)
Dimensions	1640x992x40MM
Weight	20.0KGS
Front	Glass 4.0 mm tempered glass
Frame	Anodized aluminium alloy

Temperature Characteristics:

Nominal Operating Cell Temperature (NOCT)	45±2°C
Temperature Coefficient of Pmax	-0.44 %/°C
Temperature Coefficient of Voc	-0.33 %/°C
Temperature Coefficient of Isc	0.055 %/°C

Refer to the Wmp range

Our factory can produce solar panel and solar module from 1.5W-290w (1.5w, 2.5w, 5w, 10w, 20w, 40w, 50w, 60w, 80w, 85w, 125w, 135w, 150w, 165w, 180w), according to customers requirement.

(A). Wmp range: 0.01W-6W, to be sealed with epoxy resin on PCB (printed circuit board), or to be sealed in plastic directly.

(B). Wmp range: 0.01W-15W, to be encapsulated with PET, on PCB (printed circuit board)

(C). Wmp range: 1W-60W, to be encapsulated with PET, on stainless steel, with holes for assembling purpose.

(D). Wmp range: 1W-290W, to be encapsulated with tempered glass, EVA, TPT, together with aluminium frame, junction box and (if necessary)diode and cable.

Refer to the material:

Monocrystalline solar cell or polycrystalline solar cell

Efficiency range 14%-17%, cell size 5/6.

Q: How do solar panels affect the property's LEED certification?: Solar panels can have a positive impact on a property's LEED certification by contributing towards earning points in various categories, such as Energy and Atmosphere, Sustainable Sites, and Innovation in Design. By generating clean and renewable energy, solar panels help reduce the property's carbon footprint, increase energy efficiency, and promote sustainability, thus enhancing the property's overall LEED certification.

Q: Can solar panels be used to power a military vehicle?: Yes, solar panels can be used to power a military vehicle. Solar panels can be integrated onto the vehicle's surface to capture sunlight and convert it into electricity, which can then power various systems or even recharge the vehicle's battery. This can provide a more sustainable and renewable source of energy, reducing the reliance on traditional fuel sources and increasing the operational range of military vehicles.

Q: What i would like to know is if you were using commercially available solar panels, clustered as close together as possible and spread out on one acre, how much electrical energy is produced? if u can 'translate' this into terms of ( hour of average daylight = powering a ____ for X units of time): In okorder /

Q: Can solar panels be used on a backpack or portable device?: Yes, solar panels can be used on a backpack or portable device. These panels, often referred to as portable or foldable solar panels, can be easily attached to a backpack or other portable devices to harness sunlight and convert it into usable electricity. This allows you to charge your electronic devices while on the go, making them ideal for outdoor activities, camping trips, or situations where access to a power source is limited.

Q: Can solar panels be installed on a library or educational institution?: Yes, solar panels can be installed on a library or educational institution. In fact, many libraries and educational institutions are increasingly adopting solar energy systems to reduce their carbon footprint, lower energy costs, and promote renewable energy education. Installing solar panels on rooftops or open spaces of these buildings can provide clean and sustainable electricity, benefiting both the institution and the environment.

Q: What is the impact of roof age on solar panels' efficiency?: The impact of roof age on solar panels' efficiency can vary depending on the specific condition of the roof. In general, an older roof may need repairs or replacement before installing solar panels to ensure proper installation and optimal performance. Additionally, an aged roof may have structural issues or shading problems that can affect the efficiency of solar panels. Therefore, it is important to assess and address any roof concerns before installing solar panels to maximize their efficiency and longevity.

Q: 3.8 volts is required to fully charge a battery. But at 3.8 volts, the battery can be overcharged without the use of a controller correct? What if I don't care if the battery is fully charged? In the case of our family boat, I just installed a new radio, so I'm a little worried about power consumption. So now for the real question; If I hook a 2 volt panel to the batteries, do I need to worry about overcharging them? Or will the batteries stop the charging process once they reach 2 volt?I built the panel myself, it's 8 volts at 3.5 amps open circuit. I have tabs at every 3 volt increment on the panel so that I can use less voltage than 8 if I want to power something directly, (ex:2 volt radio)So I'm using the 2 volt tab at 3.5 amps(approx) for a total of approx 48 watts: I have been using solar panels for over ten years never until recently bothered to use a charge controller, it depends really on how much power your batteries can hold how often they will be drained from use of the connected dc-ac inverters. While constant daylight charging at 8v 3.5a/hr is quite heavy it is not excessive, 2v lead acid battery chargers give a voltage output of appx 4.8v but the fluctuating output of a solar panel means you may well charge at 8v for some time but with occasional shade etc it will more likely average at 5v which I think is quite acceptable.

Q: I was just wondering what the minimum and maximm charging voltage and ampere is for li ion batteries. If i connect a solar panel, which only gets enough sunshine to generate voltage, will that still charge the battery, or would i have to series connect solar panels until they together reach 3,7volt?: One lithium cell requires 4.2V to obtain its full charge, Never exceed 4.2V ! Output from solar panel if below 3.7V , nothing charge to lithium. Total charging time until the cell is full depending on the AH rate of cell and the charging current that solar panel can be provided. Suppose cell is rate 5AH, and the charging current from solar panel under full sun shine can maintain 0.5A ( use solar panel short circuit current rate from its specification as a reference ) , hence, 0 hours is enough. And be sure the solar panel can maintain 4.2V output at 0.5A . Remember, over charge lithium cell one time might reduce its life into half . Therefore, let the solar panel output passing through a precision regulator to maintain output is 4.2V is the best way, because, as cell reaches 4.2V , no more charging current is forced into cell ( automatic stop charging ). If you do not have the knowledge to make this simple variable voltage regulator with LM37K ( if you choose this way, buy solar panel output has at least 2V) , you may choose to do it manually by install a current meter and a variable resistor in series between the panel output to cell. By adjust the value of resistor, charging current can be controlled ( if you choose this way, buy solar panel output has as less as 6V ). Count the charging time with a clock and adjust the charging current from time to time to maintain 0.5A .

Q: Are there different types of solar panels?: Yes, there are different types of solar panels. The most commonly used types include monocrystalline, polycrystalline, and thin-film solar panels. Each type has its own advantages and disadvantages in terms of efficiency, cost, and appearance.

Q: Can solar panels be installed on satellites?: Yes, solar panels can be and are often installed on satellites to generate electricity from sunlight for powering the satellite's various systems and instruments.

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