FAQ

FAQ

PV Modules

  • 1. What is your MOQ?

    Low MOQ, 1 piece for sample, bulk price for large quantity.

  • 2. How about delivery time?

    Sample: 3–7 working days. Bulk order: 15–25 working days We support sea freight, air freight and door-to-door shipping.

  • 3. Do you support DDP shipping?

    Yes, we can offer DDP shipping service for most countries, no extra customs fee for you.

  • 4. Can you do OEM / custom logo & packaging?

    Custom logo, printing, color box packaging and private label service are available for bulk order.

  • 5. Can I get sample first?

    Sample order is acceptable. Bulk order discount after sample confirmation.

  • 6. Is it easy to install? Do you provide installation manual?

    Plug-and-play design with MC4 connector. We provide detailed installation manual and wiring diagram. Mounting brackets can be matched as request.

  • 7. Can I connect multiple panels in series or parallel?

    Support series and parallel connection. We can provide connection suggestions according to your battery voltage and inverter parameters.

  • 8. What is the lifespan and warranty period?

    Service life: 25–30 years

    Product warranty: 12 years material & workmanship warranty

    Linear power output warranty: 25 years

  • 9. Will the power attenuate after long use?

    Low attenuation technology, annual power attenuation less than 0.5%, still maintain over 85% power after 25 years.

  • 10. Do you have certification for import?

    Our solar modules have CE, TUV, IEC certifications, meet most countries import standards, support smooth customs clearance.

  • 11. How much electricity can one solar panel generate per day?

    Power generation depends on local sunlight. Normally, a 550W panel can generate 2.2–3.5 kWh/day under standard sunlight conditions.

  • 12. Does it work in cloudy or rainy days?

    It can still generate power on cloudy days with lower output. We recommend matching battery energy storage system for stable power supply.

  • 13. What systems is this panel suitable for?

    Widely used for off-grid / on-grid solar system, home rooftop, villa, farm, factory, RV, trailer and solar energy storage system.

  • 14. What is the IP rating of the solar module?

    Our solar panels adopt IP66 waterproof & dustproof, resistant to rain, snow, sandstorm and harsh outdoor weather.

  • 15. Can the panel withstand hail & strong wind?

    With high-strength tempered glass and aluminum alloy frame, it supports hail impact resistance and high wind load, suitable for outdoor long-term installation.

  • 16. Anti-rust & corrosion resistance?

    Anodized aluminum frame and anti-corrosion backsheet, perfect for coastal, humid and high salt mist areas.

  • 17. What is the wattage & efficiency of your solar panels?

    We supply monocrystalline solar panels with 350W–700W options. Module efficiency ranges from 21% to 23.5%, high light absorption, suitable for home, commercial and off-grid system.

  • 18. What are the panel dimensions & weight?

    Different wattage has different size. We can provide exact dimension and weight sheet according to your model request. Custom size is also available.

  • 19. Is it monocrystalline or polycrystalline?

    Mainly high-efficiency monocrystalline solar panels, better low-light performance, longer service life and higher power generation than polycrystalline.

Inverters

  • 1. What if the inverter shuts down automatically?

    Automatic shutdown is a safety protection, caused by overload, high temperature or low battery voltage. We provide troubleshooting guide for free.

  • 2. Do you provide technical support?

    Yes, we provide wiring diagram, user manual and one-stop system solution online technical support.

  • 3. MOQ & sample order?

    1 unit sample is available, bulk order with wholesale discount.

  • 4. Support OEM / customized?

    Custom logo, shell color, plug type, voltage and frequency are acceptable for bulk orders.

  • 5. Delivery & shipping service?

    Fast delivery, support sea freight, air freight and DDP door to door shipping.

  • 6. Do you have certification for import?

    CE, FCC, ROHS certified, meet most countries import standards, smooth customs clearance.

  • 7. Warranty and service life?

    2 years official warranty, 10+ years long service life. Professional after-sales support.

  • 8. How about quality guarantee?

    All units pass full load aging test before shipment, stable performance and low failure rate.

  • 9. Working temperature range?

    Adapt to wide temperature -10℃ ~ +50℃, suitable for outdoor, high temperature and cold area.

  • 10. Is it waterproof?

    Main body is dustproof and indoor/outdoor sheltered use. Please avoid direct rain splash for long service life.

  • 11. Is it easy to install?

    Plug and play design, with clear interface and manual. Wall-mounted & desktop optional, easy for DIY installation.

  • 12. Does it support parallel connection?

    Some high-power hybrid models support parallel connection for expanding system power. Please contact us for details.

  • 13. Can I control it remotely?

    Optional WIFI / Bluetooth monitor module, support mobile APP real-time data check and remote parameter setting.

  • 14. Does it have built-in MPPT charger?

    Hybrid inverter comes with high-efficiency MPPT solar charge controller, fast charging and intelligent power adjustment.

  • 15. What safety protection functions does it have?

    Built-in multi-protection: Overload, over voltage, low voltage, over temperature, short circuit, reverse connection, surge protection.

  • 16. Is it quiet during operation?

    Low noise design with smart cooling fan, automatic heat dissipation, no loud noise for home indoor use.

  • 17. What appliances can this inverter run?

    It can support home appliances: fan, light, TV, refrigerator, air conditioner, water pump, power tools, kitchen equipment. Inductive loads need to consider 1.5~3 times starting power.

  • 18. What is continuous power vs peak power?

    Continuous power: long-term stable output. Peak power: instant starting power for electric motor devices. It can protect the machine from overload damage.

  • 19. Can I run air conditioner with it?

    Yes, please choose higher power model and check the starting power of your air conditioner first. We can give professional matching suggestion.

  • 20. Input battery voltage options?

    Common DC voltage: 12V/24V/48V. AC output 110V/220V, 50Hz/60Hz, can match local grid standard.

  • 21. Is it off-grid or on-grid?

    We have off-grid standalone inverters and hybrid on/off grid inverters. Hybrid model can connect grid, solar panel and battery at the same time.

  • 22. Can it work with solar panels and batteries?

    Yes. Hybrid inverter built-in solar MPPT controller, directly connect PV modules and lithium/lead-acid batteries for solar power system.

  • 23. What type of inverter do you sell?

    We have pure sine wave inverter, including off-grid inverter, hybrid solar inverter, low frequency inverter and portable power inverter. Suitable for home solar system, RV, camping and emergency power supply.

  • 24. What power options are available?

    Multiple power for choice: 500W, 1000W, 2000W, 3000W, 5000W, 6000W. Custom high power is available.

  • 25. What’s the difference between pure sine wave and modified sine wave?

    Pure sine wave is compatible with all sensitive electronics, no noise, no damage to home appliances. Modified sine wave only for simple resistive loads. We only supply pure sine wave for safe use.

  • 26. What if the panel has quality problem?

    We provide professional after-sales service. Damaged or defective modules will be replaced free of charge within the warranty period.

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