12V Polycrystalline Solar Panels 250W with High Efficiency
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- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 watt
- Supply Capability:
- 1000000 watt/month
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Specification
Introduction of Poly solar panels CNBM
Polycrystalline Solar Panels 250W With High Efficiency
CNBM Solar photovoltaic (PV) Panel is designed for large electrical power requirements. It is the optimal choice for both on-grid and off-grid power systems. CNBM Solar panel offers high performance of power per square foot of solar array. Monocrystalline silicon(c-Si): often made using the Czochralski process. Single-crystal wafer cells tend to be expensive, and because they are cut from cylindrical ingots, do not completely cover a square solar cell module without a substantial waste of refined silicon. Hence most c-Si panels have uncovered gaps at the four corners of the cells.
Feature
1.Solar Cell : High efficiency crystalline solar cell. Even if under the weak light, the solar module can produce maximum power output.
2.Tempered glass (toughened glass): Anti-reflecting coating and high transmission rate glass increase the power output and mechanical strength of solar module.
3.EVA and TPT: Using high quality EVA and TPT to prevent destroying and water.
4.Long lifetime: ≥25 years; Less power decrease.
5.Resisting moisture and etching effectively, not effected by geology.
6.The certificate issued by international authority: UL, TUV, IEC, VDE, CE.
Specification
Characteristics of Poly solar panels CNBM | |||||
Max Power Voltage Vmp(V) | 30.3 | 30.8 | 31.1 | 31.4 | 31.85 |
Max Power Current Imp(A) | 7.60 | 7.64 | 7.73 | 7.81 | 7.85 |
Open Circuit Voltage Voc(V) | 36.1 | 36.6 | 37 | 37.3 | 37.68 |
Short Circuit Current Isc(A) | 8.50 | 8.55 | 8.65 | 8.75 | 8.85 |
Max Power Pm(W) | 230W | 235W | 240W | 245W | 250W |
Temperature Coefficient of Cells Poly solar panels CNBM | |
NOCT | 45℃ ± 2℃ |
Temperature Coeffucients of Isc (%/℃) | 0.0492 |
Temperature Coeffucients of Voc (%/℃) | -0.3374 |
Temperature Coeffucients of Voc (%/℃) | -0.4677 |
Mechanical Data of Poly solar panels CNBM | |
Dimension | 1638 × 982 × 40 mm |
Weight | 19.5 kg |
No. of Cells and Connections | 60 (6 ×10) |
Tolerance | 0 ~ + 5 W |
Cell | Monocrystalline Cell 156 × 156 mm |
Packing | 624 Pcs/40ft(H) Container |
Limits of Poly solar panels CNBM | |
Operating Temperature | -40℃ to +85℃ |
Storage Temperature | -40℃ to +85℃ |
Max System Voltage | 1000VDC(IEC) / 600VDC(UL) |
Guarantees of Poly solar panels CNBM | |
Products Guarantee | 12 yrs free from defects in materials and workmanship |
Performance Guarantee | No less than 90% within 10yrs and no less than 80% within 25yrs |
Certificates | TUV(IEC61215&IEC61730),VDE(IEC61215&IEC61730),UL,CE |
Packaging Information
Package:26pcs/box
Quantity:1 box/pallent
Loading Capacity:952pcs/40ft
- Q: So lets say that Everyday I use ,280 kWh. How many 250 watt solar panels would I buy so that I don't need to buy electricity anymore. Sorry if this sounds stupid, I am doing research on why american homes should become more cost efficient.
- I okorder /... Home Power (magazine)
- Q: Is it possible for a 2V rated panel to charge a bank of batteries equal to around 36V? I believe that the panels should equal or exceed the voltage of the batteries but, I'm not for certain.
- With a 2 volt power source (solar panel, battery charger, vehicle charging system, etc...) you can charge three 2 volt batteries in parallel circuits then switch to a series circuit through a series/parallel switch to get 36 volts output. I've done this with my electric scooter so I can charge it with my pickup through the lighter socket when I'm away from home. It works great! When at home I just leave the switch in the 36 volt position, plug the charger in the wall receptacle and the charger puts out 36 volts. Actually 2 volt lead acid batteries have 2.6 volts when fully charged so the charging source has an output of 3.6 to 4.2 volts to effect a complete charge. In the series circuit the fully charged batteries would put out 37.8 volts so the charger would have an output of 40.8 to 42.6 volts.
- Q: Can solar panels be installed on electric fences?
- Yes, solar panels can be installed on electric fences. The panels can provide the necessary power to keep the electric fence operational without relying on traditional electrical sources.
- Q: What is the lifespan of solar panel batteries?
- The lifespan of solar panel batteries can vary depending on various factors such as the type of battery, its quality, and usage patterns. Generally, solar panel batteries are designed to last between 5 to 15 years. However, with proper maintenance and care, some batteries have been known to last even longer.
- Q: Can solar panels be installed on a pergola or gazebo?
- Yes, solar panels can be installed on a pergola or gazebo. The flat or sloping roof of a pergola or gazebo provides a suitable surface for mounting solar panels. This allows for the utilization of solar energy while also providing shade and protection from the elements.
- Q: I am starting to think about solar panels as an option for my home. I have done some research on panels, to be honest its all very confusing. There are many different panels some with 60 watts some all the way up to 20 watts. My household currently uses about 2700 to 3400 kWh every two months. So based off of my power usage maybe you can answer some of the following questions:What kind of panels should I be looking at?Which panel manufacturers give the best bang for the buck (reliable/affordable)?Anything else I should be concerned about?I am just starting out in educating myself on solar power so please excuse me if I sound very naive. Any information that you may have will be helpful. Thanks in advance.
- I'm not an expert, but I recently went through the process and now have a system on my home. I got 3 quotes from 3 licensed contractors and they all seemed to be about the same, the prices seemed to be based on the amount of energy they produced. In CA and I'm sure everywhere else they are tested by an independent agency which rates the output of the panels. You seem to have similar usage as my house, I got a 3.75kwhdc unit, it isn't expected to eliminate my bill, but it should reduce it by quite a bit. I've only had it for a few months and it took me from about 45 kwh per day to around 0. I know I'll have lower output in the winter, but my usage is lower in the winter as well. I decided on this size unit to maximize my rebates and I can take advantage of my utilities rebates when I add to the system in a few years. The difference between panels seemed to be how big they were. Some systems can be twice the size and produce the same amount of energy. I put a couple links below that I found helpful. The roseville pv buy down program has some great links that give information about specific systems.
- Q: I have four power packs for solar lights. They have 3 AA .2volt batteries of 2450 mAh capacity installed in series for a total supply voltage of 4 volt maximum for the lights. I want to charge all four packs at once off a single 6 volt solar panel. With the four packs wired in parallel, what capacity output (wattage) panel do I need to charge the batteries in an 8 hour day?
- WIRE THEM IN PARALLEL BUT MUST VIA ONE BLOCKING DIOED FOR EACH 4V BATTERY BANK ( LIGHT) BETWEEN SOLAR PANEL OUTPUT TO EACH BATTERY BANK. DIODE USES LIKE N5404 THAT CAN HANDLE 3A OR HIGHER IS BETTER. TOTAL AH = 9.8 AH FROM ALL 4 LIGHTS. NOT 25AH FROM YOUR MISTAKE RATE. TO CHARGE THEM FULLY IN 8 HOURS, CHARGING CURRENT AT LEAST .3A BUY SOLAR PANEL HAS OUTPUT 6V 2A ( OR 0W ) IS GOOD ENOUGH.
- Q: I own a townhome in the Phoenix area (my power company's SRP, if that makes a difference). Phoenix is a great place for solar. I could probably save money, in the long term, if I got some solar panels.But I am currently extremely broke, so I can't buy solar panels unless I will more or less immediately be paying no more than I am now per month, with little or nothing down. And most of the solar leasing places won't work with me, because (as is common for townhomes) I don't technically own my roof. I have permission to put things on it, but the property management people (or whoever actually owns my roof) won't sign the lease or whatever.Anyone know of either a way to buy solar panels without paying significantly more per month than I already do for electricity, or a solar leasing company that can work with the restrictions I have?
- There are companies who would install solar panels on your roof for no cost. The catch is that they get the power generated for the first 20 years which is the useful life of the panels then you get what's left of the obsolete panels, meanwhile you're required to purchase your power from them at allegedly reduced rates but there is no guarantee that they would remain reduced versus the market once they have you locked in. It's like how the cell phone companies will give you a free cell phone if you sign a contract. Keep in mind that once you've factored in the installation costs and the useful life of the panels, the effective costs of solar photovoltaic energy is about 23 cents to 43 cents a kwh while grid power is about 5 cents per kwh to the consumer, 3 cents per kwh to the utilities for coal generation. It's just that so few people understand how to project an initial capital expense with periodic future returns through discounted cash flow, hence people think solar power is free out of ignorance. Without government incentives, there are no economic benefits to solar and most solar installers structure the sales such that they gain the economic benefit instead of the consumer who is often ignorant of how to calculate the financials.
- Q: I'm trying to charge rechargeable AA batteries with a solar panel. What gauge wire should I use to connect the panel to the batteries? I know I'm not going to have a lot of current going through so the wire size doesn't really matter. Can the wire be too thick thoShould I ugh? Should I use a diode to keep the batteries from overpowering the circuit? If so, what size diode? My panel is 4.8V 50mA. Can I just hook the panel straight into the batteries or do I need something else?
- In order: .? Just about any wire will do.? You can handle 50 mA over just about anything, even 28 gauge telephone wire.? Your biggest problems are probably going to be mechanical stress (you want stranded wire instead of solid, to avoid breakage) and dealing with the size of larger wires. 8 gauge speaker wire may be a good optimum. 2.? You need a diode.? If you're charging NiMH or NiCd cells you're going to have about .25 volts/cell; you can charge up to 3 of them in series with a 4.8 volt panel.? The solar panel is a bunch of diodes itself, but they're leaky in the reverse direction; the diode prevents the batteries from discharging themselves back through the panel.? You want a Schottky-barrier diode, because the forward voltage drop is about 0.2 volts instead of 0.7 volts for a regular silicon rectifier.? This gives you maximum current output from your panel.
- Q: Can solar panels be installed on residential homes?
- Yes, solar panels can be installed on residential homes. They are a popular and effective way to generate renewable energy for households, reduce electricity bills, and contribute to a greener environment.
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12V Polycrystalline Solar Panels 250W with High Efficiency
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1000 watt
- Supply Capability:
- 1000000 watt/month
OKorder Service Pledge
OKorder Financial Service
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