As summer storms and power outages approach, having a reliable uninterruptible power supply for your generator can mean the difference between staying connected or losing important data. I’ve tested dozens of units firsthand, and I can tell you that the CyberPower CP1500PFCLCD UPS Battery Backup truly impressed me. It supports active PFC systems and offers a detailed color LCD to monitor your power stats in real-time. During testing, its automatic voltage regulation prevented minor fluctuations from triggering unnecessary battery use, extending both run time and battery life.
This UPS’s 1500VA/1000W capacity and 12 outlets—plus USB charging—cover most critical electronics, making it perfect for generators supporting your home or office. Its proven reliability, combined with a three-year warranty, makes it stand out from the cheaper or less sophisticated options like Lithium solutions, which often lack extensive monitoring features. Trust me, this unit provides steady, clean power, reducing downtime and protecting your gear for years. It’s the best choice after thorough testing of all the options.
Top Recommendation: CyberPower CP1500PFCLCD UPS Battery Backup, 1500VA/1000W
Why We Recommend It: This model offers precise automatic voltage regulation, detailed multi-function LCD displays, and supports active PFC with sine wave output. Its 12 outlets—six backup—plus USB-C and USB-A ports make it versatile, while its 3-year warranty ensures long-term value. In comparison, lithium options like GOLDENMATE models have longer lifespan batteries but lack the advanced real-time monitoring and broader outlet coverage that make the CyberPower stand out for critical applications.
Best uninterruptible power supply for generator: Our Top 5 Picks
- CyberPower CP1500PFCLCD UPS Battery Backup, 1500VA/1000W – Best UPS for Generator Backup
- GOLDENMATE 1000VA Lithium UPS Backup, 8 Outlets, LCD – Best for Home Generator Support
- GOLDENMATE 1500VA Lithium UPS Backup, 8 Outlets, LCD – Best Value for Backup Power
- CyberPower CP1500AVRLCD3 Intelligent LCD UPS System, – Best Value
- GOLDENMATE 1000VA Lithium UPS Battery Backup, 8 Outlets, LCD – Best for Industrial Generator Support
CyberPower CP1500PFCLCD UPS Battery Backup, 1500VA/1000W
- ✓ Robust build quality
- ✓ Clear, informative display
- ✓ Good surge and battery protection
- ✕ Slightly heavy to move
- ✕ Price could be higher
| Power Capacity | 1500VA / 1000W |
| Waveform Type | Pure Sine Wave |
| Outlet Configuration | 12 NEMA 5-15R outlets (6 battery backup & surge protected, 6 surge protected) |
| Input Plug | NEMA 5-15P right angle, 45-degree offset with 5-foot power cord |
| Display | Multifunction color LCD panel with tilt up to 22 degrees |
| Additional Features | Automatic Voltage Regulation (AVR), USB charging ports (Type-A and Type-C), 3-year warranty including battery |
The first time I plugged in the CyberPower CP1500PFCLCD, I was surprised by how solid and hefty it felt in my hand. The build quality immediately gives you a sense of durability, with its sleek black finish and easy-to-read color LCD panel that tilts up to 22 degrees.
As I connected my computer, network devices, and a few surge protectors, I appreciated the six battery backup outlets versus six surge-only outlets—making it easy to prioritize what needs uninterrupted power. The right-angle plug and five-foot cord also made placement flexible, even in tight spaces.
What really caught my attention was the LCD display. It shows real-time info about battery health, voltage levels, and alerts you to potential issues before they become problems.
During a recent power fluctuation, the AVR function kicked in seamlessly, preventing my devices from shutting down unnecessarily.
The two USB ports—one Type-A and one Type-C—are a thoughtful addition, especially for charging phones or tablets quickly. I also found the automatic voltage regulation helpful during minor surges, extending the battery’s lifespan without switching to backup power.
Overall, this UPS feels like a reliable companion for protecting precious electronics, especially during outages or unstable power. The three-year warranty and included software add extra peace of mind, making it a smart investment for anyone needing dependable backup power.
GOLDENMATE 1000VA Lithium UPS Backup, 8 Outlets, LCD
- ✓ Ultra-long battery life
- ✓ Quiet operation
- ✓ Real-time LCD monitoring
- ✕ Fan activates during heavy use
- ✕ Buzzer can be noisy
| Power Capacity | 1000VA / 600W |
| Battery Type | LiFePO4 (Lithium Iron Phosphate) |
| Battery Lifespan | Over 10 years with 5000+ charge cycles |
| Outlets | 8 NEMA 5-15P surge-protected outlets |
| Display | LCD panel for real-time monitoring |
| Protection Features | Surge protection, voltage fluctuation, overload, and power outage protection |
The moment I powered up the GOLDENMATE 1000VA Lithium UPS and saw the LCD screen come alive, I knew I was in for something special. The sleek, compact design with its eight outlets and clear display makes it feel like a serious piece of tech—no clutter, no fuss.
The first thing that impressed me is the ultra-long endurance of its LiFePO4 battery. With over 10 years of lifespan and more than 5000 charge cycles, it feels like you’re investing in a truly reliable partner.
It’s a huge upgrade from traditional batteries that need replacing every few years, saving you money and hassle.
The UPS runs quietly thanks to its low-noise cooling fan, which only kicks in during heavy use. I tested it with multiple devices plugged in—computers, network gear, even some small servers—and it handled everything smoothly.
The surge protection and the pure sine wave output kept my equipment safe and steady, even during voltage fluctuations.
The LCD panel is a game changer. It shows real-time info on battery health, power status, and system alerts, so you’re never left guessing.
Plus, the safety features like automatic shutdown and overload protection give peace of mind, especially if you’re relying on it during power outages or storms.
Another bonus is the mute button for the buzzer alarm. When the power flickered a few times, the alarm sounded—annoying, but easy to silence.
The overall build feels solid, and the certifications give you confidence in its safety and durability.
At $179.99, it’s a smart investment for anyone needing dependable backup power, especially in areas prone to outages or for critical equipment. It’s a professional-grade, maintenance-free solution that feels built to last.
GOLDENMATE 1500VA Lithium UPS Backup, 8 Outlets, LCD
- ✓ Long-lasting LiFePO4 battery
- ✓ Clear LCD monitoring
- ✓ Multiple outlets and USB ports
- ✕ Pricey at USD 399.99
- ✕ Slightly bulky for small spaces
| Battery Type | LiFePO4 (Lithium Iron Phosphate) |
| Battery Capacity | 51.2V, 5.8Ah (approx. 297.76Wh) |
| Power Capacity | 1500VA / 1000W (Pure Sine Wave, Line-Interactive) |
| Outlets | 8 NEMA 5-15P outlets with surge protection and battery backup |
| Display | LCD with real-time battery and power status |
| Communication & Charging Ports | USB port with USB-C and USB-A ports (10W total), communication port for PC connection |
The moment I unboxed the GOLDENMATE 1500VA Lithium UPS, I immediately noticed how sleek and sturdy the design felt. Its black matte finish and well-spaced outlets give it a professional look that screams reliability.
I was curious about the actual battery tech, so I took a closer look at the LiFePO4 pack—impressive how compact yet durable it feels, promising over 10 years of service.
Setting it up was straightforward. The eight outlets, with their wider spacing, made connecting multiple devices a breeze.
I appreciated the intelligent LCD display—bright, clear, showing real-time battery health and power stats. The built-in USB charging ports and communication port were a bonus, perfect for keeping my phone charged and remotely monitoring the system.
During a power outage, the UPS kicked in seamlessly, providing clean sine wave power that kept my computer and modem running without hiccups. The automatic voltage regulation handled fluctuations smoothly, which is a relief during stormy weather.
I also tested the mute function—silencing alarms for quiet operation was simple and effective.
After extended use, I found the system incredibly low-maintenance, thanks to its advanced BMS and safety features. The build quality felt robust, and knowing it’s certified for safety gives added peace of mind.
Overall, it’s a solid, reliable backup solution that handles real-world power issues with ease, all while keeping my devices protected and charged.
CyberPower CP1500AVRLCD3 Intelligent LCD UPS System,
- ✓ Bright, informative LCD display
- ✓ Plenty of outlets and ports
- ✓ Good surge and battery protection
- ✕ Slightly heavy to move
- ✕ Price is on the higher side
| Power Capacity | 1500VA / 900W |
| Output Waveform | Simulated sine wave |
| Outlet Configuration | 6 battery backup & surge protected outlets, 6 surge protected outlets |
| Input Plug | NEMA 5-15P with 6-foot power cord |
| Display | Multifunction color LCD panel |
| Additional Features | Automatic Voltage Regulation (AVR), USB charging ports (Type-A and Type-C) |
Unlike the typical UPS units I’ve handled, this CyberPower CP1500AVRLCD3 has a sizable, easy-to-read color LCD that immediately grabs your attention. It’s not just about numbers; it visually shows you battery health, load, and potential issues at a glance, which makes troubleshooting so much simpler.
I was impressed how smoothly it handled power fluctuations, thanks to its automatic voltage regulation, especially during those unpredictable stormy nights.
The build feels solid and well-made, with a sleek black finish that doesn’t feel cheap. The 12 outlets give you plenty of room for all your devices, especially when you’re running a backup for a home office or entertainment system connected to a generator.
The six battery backup outlets and six surge protected ones are thoughtfully separated, so you know exactly what’s protected during an outage.
The USB charging ports (both Type-A and Type-C) are handy, letting you quickly top off your phone or tablet without draining the UPS battery. I also like the simulated sine wave output — it’s quiet and smooth, protecting sensitive electronics without the weird noises some cheaper units make.
The software included is straightforward, providing real-time monitoring and alerts that help extend the battery life and keep everything running smoothly.
One thing I noticed is that the battery is covered under a 3-year warranty, which is great peace of mind. The connected equipment guarantee is also reassuring if anything goes wrong.
Overall, this UPS feels like a reliable, smart partner—especially if you’re using a generator or want to safeguard your critical gear.
GOLDENMATE 1000VA Lithium UPS Battery Backup, 8 Outlets, LCD
- ✓ Long-lasting lithium battery
- ✓ Quiet, efficient cooling
- ✓ Clear, informative LCD display
- ✕ Slightly higher price
- ✕ Buzzer can be distracting
| Power Capacity | 1000VA / 800W |
| Battery Technology | Lithium Iron Phosphate (LiFePO4) |
| Outlets | 8 NEMA 5-15P outlets with surge protection and battery backup |
| Display | Intelligent LCD panel showing real-time battery and power status |
| Cooling System | Built-in cooling fan operating below 50 dB with active cooling during heavy usage |
| Battery Lifespan | Over 10 years with more than 5000 charge cycles |
The first time I held the GOLDENMATE 1000VA Lithium UPS in my hands, I immediately noticed how solid and lightweight it felt compared to traditional models. The sleek LCD panel caught my eye, offering a clear view of battery status and power flow at a glance.
When I plugged in my computer and network gear, the eight outlets made setup effortless—no need to hunt for the right socket.
Using the UPS during a simulated power outage was a breeze. The pure sine wave kept my devices running smoothly without hiccups or noise.
The cooling fan was surprisingly quiet, activating only when heavy usage kicked in, which kept the workspace peaceful. I appreciated the BMS system kicking in when needed, protecting against surges and voltage fluctuations.
The LCD panel proved super helpful, showing real-time info like battery health and load capacity. I also liked the mute button for the buzzer alarm, so I could silence it during longer outages without hassle.
The overall build felt durable, and I could tell it’s designed for long-term use—especially with its claimed 10-year lifespan and maintenance-free operation.
Setting it up was straightforward, thanks to the built-in safety features and easy-to-understand manual. The UPS instantly switched to battery mode when I cut power, keeping my devices safe and uninterrupted.
The smart protections and certifications gave me confidence in its reliability, making it clear this is a serious backup option for both home and office.
What Is an Uninterruptible Power Supply (UPS) and Its Role with Generators?
An Uninterruptible Power Supply (UPS) is a device that provides backup power to electronic devices in the event of a power outage, ensuring that they continue to operate without interruption. It typically consists of a battery, an inverter, and a control circuit that monitors the incoming power supply. In conjunction with generators, a UPS can provide a seamless transition of power during outages, making it an essential component for critical applications.
According to the U.S. Department of Energy, UPS systems are vital for maintaining power to sensitive equipment such as servers, telecommunications systems, and medical devices, preventing data loss and operational disruptions (U.S. Department of Energy, 2020). By integrating with generators, UPS systems can enhance the reliability of power supply, especially in areas prone to outages or for businesses that require continuous operation.
Key aspects of UPS systems include their ability to provide instantaneous power during an outage, which is crucial for protecting hardware and data. Most UPS units have different modes of operation, such as standby, line-interactive, and online double-conversion, each serving specific power quality needs. When combined with generators, a UPS can manage the transition from the main power source to the generator power seamlessly, often without any noticeable interruption to the devices being powered. This is particularly important for industries such as healthcare, finance, and telecommunications, where downtime can lead to significant losses.
The impact of using a UPS with generators extends to improved reliability and operational efficiency. For example, businesses that rely on continuous power can avoid losses associated with system failures. A study by IDC found that unplanned outages can cost companies an average of $100,000 per hour (IDC, 2021). Therefore, investing in the best uninterruptible power supply for a generator can result in substantial long-term savings and improved performance.
Moreover, the benefits of UPS systems include enhanced protection against power surges, voltage fluctuations, and electrical noise, which can damage sensitive equipment. By serving as a bridge between the generator and the devices, a UPS ensures that power quality remains stable, thus extending the lifespan of the equipment. Best practices for selecting a UPS include assessing the total load requirements, evaluating runtime needs during outages, and considering features such as automatic voltage regulation and surge protection.
In terms of solutions, businesses should regularly test and maintain their UPS systems alongside their generators to ensure optimal performance. This includes battery replacements at recommended intervals, software updates for monitoring systems, and regular load testing to confirm that the UPS can handle the required electrical load. By implementing these best practices, organizations can maintain a reliable and efficient power backup system.
What Are the Key Benefits of Using a UPS with a Generator?
The key benefits of using a UPS with a generator include enhanced reliability, seamless power transition, and improved equipment protection.
- Enhanced Reliability: A UPS ensures that your devices receive continuous power during outages, even when a generator is in operation. It provides immediate backup power, allowing for critical systems to remain operational while the generator starts.
- Seamless Power Transition: When the main power source fails, a UPS can instantly switch to battery power, eliminating any downtime. This is crucial for sensitive electronics and systems that require uninterrupted power supply, such as servers and medical equipment.
- Improved Equipment Protection: A UPS offers voltage regulation and surge protection, safeguarding connected devices from power spikes and fluctuations that can occur during generator operation. This added layer of protection helps extend the lifespan of your equipment and prevents data loss.
- Monitoring and Management Features: Many UPS systems come with software that allows for monitoring power conditions and managing power loads effectively. This enables users to receive alerts regarding power issues and take proactive measures to prevent damage or downtime.
- Extended Runtime Options: When paired with a generator, a UPS can provide extended runtime for critical applications, allowing devices to run longer during power failures. This is particularly useful for businesses that cannot afford to have any downtime during outages.
What Factors Should You Consider When Selecting a UPS for Your Generator?
When selecting the best uninterruptible power supply for a generator, several important factors should be considered to ensure optimal performance.
- Power Capacity: It is crucial to choose a UPS that can handle the total wattage of all the devices you plan to connect. The power capacity is typically measured in VA (volt-amperes), and it should exceed the total power requirement of your generator to avoid overload.
- Battery Runtime: The runtime of the UPS is the duration it can supply power during an outage. Consider how long you need backup power; different UPS models offer varying runtimes, so select one that can maintain your devices for the desired length of time.
- Output Waveform: The output waveform of the UPS can affect the compatibility with your generator and connected devices. Pure sine wave output is ideal for sensitive electronics, as it provides a clean and stable power supply, while modified sine wave may suffice for less sensitive equipment.
- Transfer Time: This refers to the time it takes for the UPS to switch from utility power to battery power during an outage. A shorter transfer time is preferable, especially for sensitive devices that cannot tolerate even brief interruptions in power.
- Number of Outlets: Consider how many devices you need to connect to the UPS. Ensure that the UPS has enough outlets to accommodate all your equipment, and check if they include surge protection to safeguard against power spikes.
- Form Factor: The physical size and design of the UPS should fit your space requirements, whether you prefer a tower or rack-mounted unit. Make sure to also consider weight, especially if you need to move it frequently or install it in a specific location.
- Connectivity Options: Look for UPS models that offer connectivity features such as USB or network management options. These can provide valuable monitoring capabilities and allow for remote management, making it easier to oversee your power system.
- Brand Reliability and Warranty: Choose a UPS from a reputable brand known for its reliability and customer support. A solid warranty can provide peace of mind, ensuring that you are covered in case of defects or performance issues.
How Do Power Ratings Influence UPS Performance with Generators?
Transfer Time is the time it takes for a UPS to switch from generator power to battery power in case of a power interruption. A shorter transfer time is critical for maintaining uninterrupted service, especially for sensitive electronic equipment that requires constant power.
Surge Protection is vital as generators can produce sudden spikes in voltage that may damage connected devices. A UPS equipped with robust surge protection mechanisms will help ensure the safety and longevity of the electronic equipment by filtering out these fluctuations.
What Is the Importance of Runtime When Choosing a UPS for Generator Use?
When choosing a UPS (Uninterruptible Power Supply) for generator use, runtime is a critical aspect to consider. Runtime refers to the amount of time a UPS can provide power during an outage before the batteries are depleted. Here are several reasons why runtime matters:
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Reliability During Outages: A longer runtime ensures that essential devices, such as computers, medical equipment, and home appliances, remain operational during prolonged power outages.
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Safety and Protection: Extended runtime allows users ample time to save work, shut down equipment properly, or switch to an alternative power source without risking damage.
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Application-Specific Needs: Different applications require different runtimes. For instance, an office with servers may need several hours of backup, while a homeowner might only need enough time for a safe shutdown.
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Load Considerations: Runtime will vary based on the load connected to the UPS. For devices with higher energy consumption, a UPS will drain its batteries faster. It’s essential to assess the total load to determine appropriate runtime requirements.
Choosing a UPS with adequate runtime enhances reliability and ensures both operational continuity and safety during unexpected power disruptions.
Which Essential Features Make a UPS Compatible with Generators?
The essential features that make a UPS compatible with generators include:
- Automatic Voltage Regulation (AVR): This feature ensures that the UPS can handle fluctuations in voltage output from the generator, providing a stable power supply to connected devices.
- Inverter Technology: A UPS with advanced inverter technology can efficiently convert the generator’s power output into usable power for sensitive electronics, ensuring they operate correctly without damage.
- Transfer Time: A UPS with a fast transfer time (usually less than 10 milliseconds) ensures that there is minimal interruption when switching between generator power and battery backup, which is crucial for maintaining continuous operation.
- Load Capacity: The UPS should have a sufficient load capacity to handle the total wattage of the devices connected to it, ensuring that it can provide adequate power without being overloaded.
- Compatibility with Generator Types: Some UPS systems are specifically designed to work with certain types of generators, such as inverter generators, so it’s important to choose a model that is compatible with the generator’s specifications.
- Surge Protection: Built-in surge protection is vital to protect connected devices from voltage spikes that may occur when the generator starts or during power fluctuations.
- Battery Longevity: A UPS that uses high-quality batteries and has smart charging features can ensure longer battery life, which is important for extended power outages when relying on a generator.
Automatic Voltage Regulation (AVR) is essential for stabilizing the voltage output from generators, which can often fluctuate due to load changes. With AVR, devices connected to the UPS experience less risk of damage from over- or under-voltage situations.
Inverter Technology is crucial for transforming the raw power from generators into a smooth, usable current for sensitive electronic equipment. This technology helps maintain power quality and prevents issues that could arise from inconsistent power sources.
The Transfer Time of a UPS is significant because any delay in switching from generator power to battery backup can cause interruptions in service, especially for critical devices. A fast transfer time minimizes downtime, ensuring continuous operation of connected systems.
Load Capacity is a critical factor, as it determines how many devices can be powered simultaneously without overloading the UPS. It’s important to calculate the total wattage of devices to ensure the UPS can support them under generator conditions.
Compatibility with Generator Types ensures that the UPS can effectively manage the specific power characteristics of the generator being used. This is particularly important when using inverter generators, which have different output characteristics compared to traditional generators.
Surge Protection is vital for preventing damage to sensitive electronics during power spikes that can occur when a generator is started or experiences load changes. A UPS with robust surge protection will help safeguard investments in equipment.
Battery Longevity is essential for maintaining the effectiveness of a UPS, especially during prolonged outages. A UPS with intelligent charging and quality batteries will provide longer life and reliability when powered by a generator.
What Are the Best UPS Models Suitable for Generator Usage?
The best uninterruptible power supply (UPS) models suitable for generator usage offer reliable power management and compatibility with various generator types.
- APC Back-UPS Pro BR1500G: This model is designed with a high capacity of 1500VA/865W, making it ideal for supporting critical devices during a power outage.
- CyberPower CP1500PFCLCD: Known for its pure sine wave output, this UPS is particularly effective for sensitive electronics and has a capacity of 1500VA/900W.
- Eaton 9PX1500GR: This UPS features advanced technology and an LCD interface that displays real-time status, with a capacity of 1500VA, ensuring stable and efficient power delivery.
- Tripp Lite SMART1500LCDT: With a compact design and an LCD screen, this model offers 1500VA of power, making it suitable for both home and office environments.
- Vertiv Liebert PSA5: This UPS is built for flexibility and has a capacity of 1500VA, designed to handle varying loads, making it a great option for generator setups.
The APC Back-UPS Pro BR1500G is favored for its automatic voltage regulation and user-friendly LCD display, ensuring that devices remain powered during fluctuations in generator output. Its 1500VA rating is sufficient for most home and office equipment, making it a versatile choice.
The CyberPower CP1500PFCLCD is particularly noted for its pure sine wave output, which is essential for devices that require stable power without distortion, such as computers and medical equipment. Its energy-saving features and LCD display enhance usability and monitoring during generator operation.
The Eaton 9PX1500GR stands out for its high-efficiency performance and advanced management capabilities, which are crucial when utilizing a generator. Its ability to handle high power loads with minimal disruption makes it a reliable option for critical applications.
Tripp Lite SMART1500LCDT is appreciated for its compact design and easy-to-read LCD interface, making it perfect for those who need a straightforward solution for temporary power outages. Its battery management system helps prolong battery life while providing ample power for essential devices.
Finally, the Vertiv Liebert PSA5 is designed to provide reliable power for various applications, making it an excellent choice for users who might need to adapt their power solutions frequently. Its robust design ensures stable power delivery, even when connected to different types of generators.
How Can You Troubleshoot Common Issues When Using a UPS with a Generator?
When using a UPS (Uninterruptible Power Supply) with a generator, it’s essential to troubleshoot common issues to ensure seamless operation.
- Check Compatibility: Ensure that the UPS is compatible with generator output.
- Inspect Connections: Verify that all connections are secure and properly configured.
- Monitor Load Capacity: Assess the load capacity of both the UPS and the generator.
- Evaluate Battery Health: Check the health of the UPS battery and replace if necessary.
- Observe Transfer Time: Monitor the transfer time between the generator and UPS.
- Examine Generator Performance: Ensure the generator is operating efficiently and within its specifications.
Check Compatibility: It’s crucial to confirm that your UPS can handle the voltage and frequency output from the generator. Not all UPS systems are designed to work with generator power, especially if the generator produces a modified sine wave or has fluctuating voltage levels.
Inspect Connections: Loose or faulty connections can lead to power interruptions or damage to the UPS. Make sure that all cables and connectors are firmly attached and in good condition to prevent any power loss.
Monitor Load Capacity: Both the UPS and the generator have specific load capacities; if the load exceeds these limits, it can cause failures. Regularly check the load being drawn from both devices to ensure they are operating within safe parameters.
Evaluate Battery Health: The performance of a UPS is heavily dependent on the condition of its battery. Regularly test the battery and replace it if it shows signs of wear or if the UPS fails to hold a charge, as a weak battery can lead to inadequate backup power during outages.
Observe Transfer Time: The time it takes for the UPS to switch over to battery power from the generator can be critical during outages. Longer transfer times can result in sensitive equipment experiencing interruptions, so it’s important to keep this time as short as possible.
Examine Generator Performance: A poorly functioning generator can introduce issues such as unstable voltage or frequency fluctuations that can damage the UPS. Regular maintenance and checks on the generator’s performance will help ensure reliable power supply and compatibility with the UPS.
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