FAQ – Worthus Energy

Product & Specifications

Q1: What types of home energy storage batteries does Worthus offer?

A: Worthus offers a full range of residential LiFePO4 batteries to suit different installation needs. Our wall-mounted series (WB-2.56 to WB-20.48) is space-saving and ideal for indoor or outdoor wall installation. Our stackable series (SB-2.56 to SB-30.72) features modular expansion, allowing you to start small and add capacity as your energy needs grow. Our rack-mount series (RM-5.12 to RM-14.34) is designed for standard 19-inch server racks, perfect for utility rooms or small commercial applications. We also offer all-in-one ESS (AIO-5/AIO-10) that integrates inverter and battery in a single unit.

Q2: What capacities are available for Worthus home batteries?

A: Our batteries are available in a wide range of capacities. Wall-mounted models range from 2.56kWh to 20.48kWh. Stackable systems start at 2.56kWh per module and can be expanded up to 30.72kWh or more. Rack-mount batteries are available from 5.12kWh to 14.34kWh. We also offer customized configurations for larger energy needs.

Q3: What is the difference between wall-mounted, stackable, and rack-mount batteries?

A: Wall-mounted batteries are fixed directly to the wall, offering a compact, space-saving solution ideal for homes with limited floor space. Stackable batteries are modular—each module is placed on top of another, allowing you to easily add capacity over time without replacing the entire system. Rack-mount batteries are designed to fit into standard 19-inch equipment racks, making them suitable for utility rooms, garages, or small commercial setups where organized, professional installation is preferred.

Q4: What is the lifespan of Worthus batteries?

A: Worthus LiFePO4 batteries are designed for long-term reliability. Our wall-mounted and rack-mount series offer over 6,000 cycles at 80% DOD, with a design life exceeding 10-15 years. Our stackable series delivers over 10,000 cycles at 90% DOD, with a design life exceeding 15 years. All batteries are backed by comprehensive warranties for your peace of mind.

Q5: What is the cycle life of Worthus batteries?

A: Cycle life varies by series. Our wall-mounted and rack-mount batteries provide >6,000 cycles at 80% depth of discharge (DOD). Our stackable batteries offer >10,000 cycles at 90% DOD. This means even with daily use, your Worthus battery will perform reliably for well over a decade.

Q6: What solar inverter models does Worthus offer?

A: Worthus offers both hybrid inverters and on-grid inverters for residential use. Our single-phase hybrid inverters range from 3.6kW to 6kW, while our three-phase hybrid inverters cover 5kW to 20kW. We also offer on-grid inverters from 3.6kW to 12kW. All models feature dual MPPT technology, AFCI arc fault protection, and IP66-rated enclosures for reliable outdoor installation.

Q7: What is the efficiency of Worthus inverters?

A: Our single-phase hybrid inverters achieve a maximum efficiency of 97.6%, while our three-phase hybrid inverters reach up to 98.2%. Our on-grid inverters deliver up to 98.0% efficiency. This means more of the solar energy you generate is converted into usable electricity for your home, maximizing your return on investment.

Q8: What types of solar panels does Worthus offer?

A: Worthus offers three main categories of solar panels. Our Mono PERC series (400W to 650W) features advanced passivated emitter rear cell technology with up to 21.5% efficiency. Our All-Black series (400W to 450W) combines high performance with a sleek, uniform black aesthetic for homeowners who value curb appeal. Our Bifacial Double-Glass series (450W to 600W) generates additional power from the rear side, with over 70% bifaciality.

Q9: What is the warranty on Worthus solar panels?

A: Worthus solar panels come with a 12-year product warranty and a 25-year power warranty. The panels maintain over 82% of their original output by year 25, with first-year degradation of less than 2% and annual linear degradation of less than 0.55%.

Q10: Can Worthus batteries work with other brands of inverters?

A: Yes, most Worthus battery systems are compatible with a wide range of inverters from leading brands. Our batteries feature standard CAN and RS485 communication protocols, ensuring seamless integration with major hybrid inverters. However, we recommend contacting our technical support team to confirm compatibility with your specific inverter model before purchase.

Q11: What is the difference between LiFePO4 and other battery types?

A: LiFePO4 (lithium iron phosphate) batteries offer significant advantages over traditional lead-acid or other lithium chemistries. They are lighter, have a longer lifespan, charge faster, and provide consistent power output. LiFePO4 batteries are also safer, with excellent thermal stability and no risk of thermal runaway. They require no maintenance and perform reliably across a wide range of temperatures.

Q12: What safety certifications do Worthus products have?

A: All Worthus products meet rigorous international safety standards. Our batteries are certified to IEC 62619, UN38.3, and MSDS standards. Our inverters comply with CE, VDE-AR-E 4105, IEC 62109, and AS 4777. Our solar panels are certified to IEC 61215, IEC 61730, TÜV, and CE standards.

Installation & Setup

Q13: Can I install the system myself, or do I need a professional installer?

A: For safety and warranty compliance, we strongly recommend that all Worthus products be installed by a licensed, qualified professional installer. Improper installation can void your warranty and create safety hazards. Our products come with detailed installation manuals, but professional installation ensures optimal performance and compliance with local electrical codes.

Q14: How long does installation take?

A: Installation time depends on the complexity of your system. A typical residential battery and inverter installation usually takes 1 to 3 days. Solar panel installation typically takes 1 to 3 days as well, depending on roof complexity and system size. Our team provides technical support throughout the installation process to ensure a smooth setup.

Q15: Can I add more battery capacity in the future?

A: Yes. Our stackable battery series is specifically designed for easy capacity expansion. You can start with a single module and add more as your energy needs grow. For wall-mounted systems, additional units can be installed in parallel. We recommend consulting our technical team to plan your future expansion.

Q16: Can I add a battery to my existing solar system?

A: Yes, we specialize in retrofitting batteries to existing solar installations. Our team will assess your current setup and may recommend a compatible hybrid inverter upgrade to seamlessly manage both your solar generation and the new battery storage. Please contact our sales team with details of your existing system for a compatibility assessment.

Q17: What are the space requirements for installing a Worthus battery?

A: Space requirements vary by model. Wall-mounted batteries are compact and require minimal floor space—typically just a wall area of about 600×400mm. Stackable batteries require a small floor footprint (approximately 600×600mm) and can be placed against a wall. Rack-mount batteries fit into standard 19-inch server racks. All batteries require adequate ventilation and clearance as specified in the installation manual.

Q18: Can Worthus batteries be installed outdoors?

A: Yes. Our wall-mounted, stackable, and all-in-one batteries feature IP65 protection ratings, making them suitable for both indoor and outdoor installation. They are protected against dust and water jets, ensuring reliable performance in various weather conditions. Our rack-mount batteries have IP20 rating and are designed for indoor installation only.

Warranty & After-Sales

Q19: What is the warranty period for Worthus products?

A: Warranty periods vary by product. Our wall-mounted batteries come with a 5-year product warranty. Our stackable batteries offer a 10-year product warranty. Our inverters come with a 5-year limited warranty (extendable to 10 years). Our solar panels feature a 12-year product warranty and a 25-year power warranty. Please refer to our warranty policy for complete terms and conditions.

Q20: What does the battery warranty cover?

A: Our battery warranty covers manufacturing defects and ensures that the battery maintains at least 70-80% of its initial capacity during the warranty period. The warranty does not cover damage caused by misuse, abuse, improper installation, unauthorized modifications, lightning strikes, floods, fire, or other events beyond our reasonable control. Full warranty terms are available on our website or upon request.

Q21: What is the warranty on Worthus solar panels?

A: Worthus solar panels come with a 12-year product warranty covering manufacturing defects, and a 25-year power warranty guaranteeing at least 82% of the original rated power output by year 25. This ensures your panels will continue to generate reliable power for decades.

Q22: How do I make a warranty claim?

A: To initiate a warranty claim, please contact our customer service team with your order details, product serial number, and a description of the issue. Please attach clear photos or videos showing the problem. Our team will review your claim and guide you through the next steps. In some cases, you may be asked to return the product to our nearest service center.

Q23: Does the warranty cover shipping costs for returns?

A: Warranty terms do not include transportation costs for failures not caused by the product itself. For valid warranty claims covering manufacturing defects, we will cover the shipping costs as specified in our warranty policy. Please refer to our full warranty terms for detailed information.

Q24: What happens if my inverter fails?

A: If your inverter experiences an issue, please contact our technical support team. We will help diagnose the problem remotely. If a replacement is required under warranty, we will arrange for the exchange of the defective unit. For out-of-warranty repairs, we offer cost-effective repair services through our authorized service partners.

Technical & Performance

Q25: How do Worthus batteries perform in cold or hot weather?

A: Worthus batteries are designed to perform reliably across a wide temperature range. Our wall-mounted and stackable batteries operate in temperatures from -20°C to 55°C during discharge and 0°C to 55°C during charging. Our inverters operate from -25°C to 60°C. For optimal performance and longevity, we recommend installing the system in a location that avoids extreme temperature exposure where possible.

Q26: Do Worthus batteries have a Battery Management System (BMS)?

A: Yes, all Worthus batteries are equipped with an intelligent Battery Management System (BMS) that constantly monitors temperature, voltage, and current to ensure safe and optimal operation. The BMS provides comprehensive protection against over-charge, over-discharge, over-current, over-temperature, and short circuits. It also balances cell voltages to maximize battery life and performance.

Q27: Can I monitor my Worthus system remotely?

A: Yes. Our inverters and batteries support remote monitoring via 4G, WiFi, or RS485 connectivity. You can monitor your system's performance, energy production, battery status, and consumption in real-time through our cloud monitoring platform and mobile app.

Q28: What is the oversizing ratio for Worthus inverters?

A: Worthus inverters support an oversizing ratio of up to 1.5. This means you can connect up to 1.5 times the rated power of the inverter in solar panels, allowing you to capture more energy during low-light conditions and maximize your system's daily output. The maximum output power of the inverter is 1.1 times the rated output power.

Q29: What happens during a power outage?

A: For safety reasons, standard grid-connected solar systems automatically shut down during a power outage to protect utility workers. However, if your system is paired with a Worthus battery and a hybrid inverter, it can enter a "backup" mode, allowing you to power your essential circuits and maintain energy independence when the grid is down.

Q30: Can Worthus solar panels work in low-light or cloudy conditions?

A: Yes. Worthus solar panels are designed to generate electricity even in low-light conditions. Our panels feature excellent low-light performance due to advanced cell technology and multi-busbar design. However, power output will be reduced compared to full sunlight conditions. Our inverters' wide MPPT voltage range ensures optimal energy harvesting even during cloudy days.

Q31: Do solar panels work when there is snow on them?

A: Solar panels can still generate some power when partially covered by snow, but output will be reduced. Snow typically slides off the smooth glass surface of our panels as they warm up. We recommend keeping panels clear of heavy snow accumulation for optimal performance.

Q32: What is the degradation rate of Worthus solar panels?

A: Worthus solar panels feature first-year degradation of less than 2%, with annual linear degradation of less than 0.55% per year thereafter. This means after 25 years, our panels will still produce over 82% of their original rated power output, ensuring long-term energy production and a strong return on your investment.

Ordering, Shipping & Payment

Q33: What is the typical lead time for orders?

A: Lead times vary depending on the product and order quantity. For standard products, the typical lead time is 15-30 working days after order confirmation. For large orders or customized specifications, please contact our sales team for a specific delivery timeline.

Q34: What payment methods do you accept?

A: We accept various payment methods including T/T (bank transfer), L/C (letter of credit), and other payment terms as negotiated. For specific payment requirements, please discuss with our sales team.

Q35: Do you offer OEM/ODM services?

A: Yes. Worthus Energy offers comprehensive OEM and ODM services for solar panels, inverters, and battery systems. We can customize products according to your specifications, including branding, packaging, and technical parameters. Please contact our sales team to discuss your specific requirements.

Q36: Do you offer samples?

A: Yes, we offer samples for qualified customers. Sample costs and shipping arrangements can be discussed with our sales team. Please note that sample availability may vary by product and region.

Q37: How are products packaged for shipping?

A: All Worthus products are packaged in robust, professional packaging designed to protect against damage during transit. Batteries are shipped in wooden crates or heavy-duty cartons with foam padding. Solar panels are packaged in cardboard boxes with foam protection. Inverters are packaged in cartons with foam inserts. All packaging complies with international shipping standards.

Company & General

Q38: Where is Worthus Energy based?

A: Worthus Energy Technology Co., Ltd. is headquartered in China, with a global distribution network serving customers worldwide. We are committed to providing reliable, sustainable energy solutions for homes and businesses across the globe.

Q39: How long has Worthus been in the solar and energy storage industry?

A: Worthus Energy has been dedicated to the research, development, and manufacturing of solar and energy storage products for over a decade. Our team combines deep industry expertise with a passion for innovation, delivering products that meet the highest standards of quality, safety, and performance.

Q40: Does Worthus offer technical support?

A: Yes. We provide comprehensive technical support throughout the entire customer journey—from pre-sales consultation and system design to installation support and after-sales service. Our technical team is available to assist with any questions or issues you may encounter. Please contact us through our website or customer service channels.

Q41: Where can I find product documentation and certificates?

A: All product documentation, including technical datasheets, installation manuals, and certificates, is available for download in our Download section. If you cannot find what you're looking for, please contact our support team and we will provide the documentation you need.

Q42: How can I contact Worthus Energy?

A: You can reach us through our website's contact form, or by email and phone as listed on our Contact Us page. Our team is ready to assist you with any questions about our products, services, or your solar and energy storage needs. Please visit our website for complete contact details.