Hosyond Mini DC UPS 5V/9V/12V Multi-Voltage Output Review: The DIY Solution to Uninterrupted Connectivity?

There are few modern frustrations as acute as the one that hits when the power flickers for just a second. It’s not a full-blown outage, just a momentary blip, but the consequences cascade. The lights come right back on, but the modem is rebooting. The router is restarting its lengthy boot sequence. That critical file transfer has failed, the video conference has dropped, and the smart home hub is now offline. For the next five minutes, you’re digitally stranded. In our increasingly connected world, where a stable internet connection is as vital as running water, these micro-outages are more than just an annoyance; they are significant disruptions. This is the precise problem the niche category of DC Uninterruptible Power Supplies aims to solve, offering a targeted, efficient solution to keep your essential network gear online, no matter what the grid throws at you.

Mini DC UPS Uninterruptible Power Supply, UPS Battery Backup Power Supply for Router/Modem/Security...
  • 【Features】mini UPS is the best solution to maintain a stable connection to your internet. In the event of a power outage or power failure, simply connect your device to our UPS and it will...
  • 【Versatile】No separate power adapter required, allows wide AC voltage range of 85Vac-265Vac input. It is easy to use and has multiple output options to ensure compatibility with a wide range of...
  • 【Compatible with Most Devices】routers, modems, security cameras, aquariums, LED light strips, IP cameras, LED display panels, audio amplifiers, dashcams, speakers, card readers, smartphones, and...

What to Consider Before Buying a DC Uninterruptible Power Supply (UPS)

A DC Uninterruptible Power Supply is more than just an item; it’s a key solution for maintaining digital continuity. Unlike their large, heavy, and often inefficient AC UPS cousins designed for computers and servers, a DC UPS is a specialist. It takes AC wall power, stores it in batteries, and outputs DC power directly in the voltages your small electronics need (like 5V, 9V, or 12V). This direct DC-to-DC conversion avoids the wasteful process of converting battery power to AC, only to have your device’s power brick convert it back to DC. The result is a much smaller, more efficient, and longer-lasting backup for low-power devices like routers, modems, security cameras, and hubs.

The ideal customer for this type of product is someone who values a stable network connection above all else—the remote worker, the smart home enthusiast, the online gamer, or anyone running a small home server or Raspberry Pi. They are often tech-savvy individuals comfortable with selecting their own batteries and understanding voltage requirements. Conversely, a DC UPS might not be suitable for those who need to power AC devices (like a desktop PC or a monitor) or for users seeking a simple, all-in-one, plug-and-play solution without any setup. For those users, a traditional AC UPS from a major brand would be a more appropriate, albeit less efficient, choice for keeping their small devices powered.

Before investing, consider these crucial points in detail:

  • Dimensions & Space: A major advantage of a DC UPS is its compact footprint. Before buying, measure the space where you intend to place it, typically near your router or modem. Ensure there’s adequate ventilation, as the unit can generate a small amount of heat during charging and operation. Its small size allows it to be tucked away neatly, unlike bulky AC UPS units that often demand dedicated floor space.
  • Capacity/Performance: The performance of a “bring your own battery” unit like this is directly tied to the batteries you install. You must consider the total power draw (in watts) of the devices you plan to connect. Add up the wattage of your modem, router, and any other device. Ensure this total is well below the UPS’s maximum output (24 watts for this model). The runtime during an outage will depend on your batteries’ capacity (measured in mAh) and your total load.
  • Materials & Durability: Most DC UPS units, including the Hosyond model, feature a Polycarbonate (PC) enclosure. This material is lightweight, reasonably durable, and cost-effective. While it may not have the premium feel of a metal case, it’s perfectly adequate for a stationary device. Pay attention to the build quality of the ports and the security of the battery compartment.
  • Ease of Use & Maintenance: This is where models diverge significantly. A unit requiring you to supply your own 18650 lithium-ion batteries adds a layer of complexity. You’ll need to source high-quality, non-button-top cells and install them correctly. Long-term maintenance involves monitoring battery health, though quality lithium-ion cells should last for many years without issue, a significant advantage over the lead-acid batteries in traditional UPS systems.

Keeping these factors in mind, the Hosyond Mini DC UPS 5V/9V/12V Multi-Voltage Output stands out in several areas, particularly for its versatility and DIY nature. You can explore its detailed specifications here.

While the Hosyond Mini DC UPS 5V/9V/12V Multi-Voltage Output is an excellent choice for its specific niche, it’s always wise to see how it stacks up against the competition. For a broader look at all the top models, especially if you need to power more demanding hardware, we highly recommend checking out our complete, in-depth guide:

Bestseller No. 1
APC UPS Battery Backup and Surge Protector, 600VA/330 Watts Backup Battery Power Supply, BE600M1...
  • Uninterruptible power supply (UPS) with 600VA / 330W battery backup power
Bestseller No. 2
CyberPower CP1500PFCLCD PFC Sinewave UPS Battery Backup and Surge Protector, 1500VA/1000W, 12...
  • 1500VA/1000W PFC Sine Wave Battery Backup Uninterruptible Power Supply (UPS) System designed to support active PFC and conventional power supplies; Safeguards computers, workstations, network devices,...
SaleBestseller No. 3
CyberPower CP1500AVRLCD3 Intelligent LCD UPS System, 1500VA/900W, 12 Outlets, 2 USB Ports, AVR, Mini...
  • 1500VA/900W Intelligent LCD Battery Backup Uninterruptible Power Supply (UPS) System uses simulated sine wave output to safeguard workstations, networking devices, and home entertainment equipment

First Impressions: A Compact Powerhouse Waiting for a Heart

Unboxing the Hosyond Mini DC UPS 5V/9V/12V Multi-Voltage Output is a straightforward affair. The unit itself is surprisingly lightweight at just over 12 ounces, a featherweight compared to the multi-pound bricks we’re used to in the UPS world. The black polycarbonate casing feels sturdy enough for its purpose, though it won’t be winning any design awards. It’s a functional, utilitarian box designed to be set up and forgotten.

Inside the box, alongside the main unit and a standard AC power cord, you’ll find a small assortment of DC jumper cables, which are essential for connecting the UPS to your devices. The first thing we noticed, and a critical point that seems to catch some users by surprise, is the empty battery bay. This device is a shell, a brain without a heart, until you provide it with four 18650 lithium-ion batteries. This “batteries not included” approach is a double-edged sword: it keeps the initial price low and offers customization, but it also adds an extra step and cost for the end-user. The battery door, secured by a small Phillips-head screw, confirms this is a device for those who don’t mind a little hands-on setup, rather than a consumer-friendly, tool-less design.

Key Benefits

  • Exceptional voltage versatility with 5V, 9V, and 12V DC outputs plus POE
  • Highly efficient DC-to-DC power delivery minimizes energy waste
  • Customizable runtime based on user-supplied 18650 batteries
  • Compact and lightweight design is perfect for crowded network closets
  • Wide AC input voltage range (85-265V) adds resilience

Drawbacks

  • Requires separate purchase and installation of four 18650 batteries
  • Lacks safety certifications like UL or ETL, a concern for some users
  • Documentation is minimal and can be confusing
  • Inconvenient screw-on battery cover

A Deep Dive into the Hosyond Mini DC UPS Performance

A spec sheet can only tell you so much. To truly understand the Hosyond Mini DC UPS 5V/9V/12V Multi-Voltage Output, we had to integrate it into our own network setup and simulate the very power problems it’s designed to solve. We sourced a set of quality 3400mAh flat-top 18650 cells and embarked on a comprehensive evaluation of its core features, from battery installation to its performance under fire.

A Tinkerer’s Dream: The ‘Bring Your Own Battery’ Design

The decision to exclude batteries is the defining characteristic of this UPS. For us, this was a feature, not a flaw. It allowed us to select high-capacity cells from a reputable brand, giving us direct control over the potential runtime and longevity of our setup. Traditional UPS units come with sealed lead-acid (SLA) batteries that have a finite lifespan of 3-5 years and can be a hassle to replace. The Hosyond, by using 18650 cells—the same type found in everything from laptops to electric vehicles—leverages a more modern, energy-dense, and longer-lasting battery technology. As one user aptly noted, being built for lithium offers a much longer standby life than lead-acid.

The installation process, however, highlights the product’s target audience. After unscrewing the small screw on the back panel, the battery sled is revealed. The markings for polarity are clear, and the cells snapped in securely. But the screw itself is a deliberate design choice that speaks volumes. It’s slightly inconvenient, yes, but it also ensures the battery cover won’t be accidentally knocked off, which is a reasonable safety measure for a device housing four potent lithium-ion cells. For those wanting truly massive runtimes, the possibility of wiring up an external battery pack exists, a modification that is right up the alley of the DIY enthusiast this product seems to court. This level of customization is something you simply won’t find in a sealed, off-the-shelf unit.

Unmatched Versatility: Powering Your Entire Network Stack

This is where the Hosyond Mini DC UPS 5V/9V/12V Multi-Voltage Output truly shines. The rear of the device is a beautiful sight for anyone managing multiple low-power gadgets. Having dedicated, simultaneous outputs for 5V, 9V, and 12V is a game-changer. In our test lab, we created a common home network scenario. We connected our 12V fiber optic modem, a 9V primary mesh router, and a 5V Raspberry Pi running a network-wide ad blocker. The Hosyond powered all three simultaneously without breaking a sweat. It eliminated the need for three separate bulky wall warts, cleaning up our power strip and reducing phantom power draw significantly.

The inclusion of a 5V USB-A port is another thoughtful touch, perfect for charging a phone during an extended outage or powering another small USB device. Furthermore, the Power over Ethernet (POE) outputs (15V and 24V) add another layer of utility, primarily for IP security cameras. This allows a single Ethernet cable to provide both data and power to a compatible camera, simplifying installation dramatically. The total power budget is 24 watts, which is more than enough for most combinations of modems, routers, and switches. We calculated our total load to be around 17 watts, leaving us with plenty of headroom. This multi-output capability makes the device an incredibly efficient and tidy solution for centralizing power protection for your entire network infrastructure. For anyone looking to streamline their home network’s power setup, the versatility offered by this mini DC UPS is a compelling reason to consider it.

Real-World Performance and Power Outage Simulation

With our network gear connected and the batteries fully charged—indicated by the clear four-stage LED display on the front—it was time for the main event. We simulated a power outage by simply unplugging the Hosyond from the wall. The switchover was instantaneous. There was no flicker, no reboot, no interruption whatsoever. Our devices continued to run as if nothing had happened, and our internet connection remained rock-solid. This seamless transition is the entire purpose of a UPS, and the Hosyond performed flawlessly in this core function.

The next question is runtime. This is entirely dependent on your batteries and your load. With our four 3400mAh cells and a ~17W load, we ran a continuous test. The unit kept our entire network stack online for just over 2.5 hours before the battery indicator dropped to its final bar. For a typical home user, this is more than enough time to ride out the vast majority of power outages. If you were only powering a single, efficient fiber modem (~5W), you could expect runtimes exceeding 8-10 hours, turning a day-long outage into a minor inconvenience. The LED indicator on the front provides a simple but effective at-a-glance status of the remaining charge (25%, 50%, 75%, 100%), so you’re never left guessing how much time you have left.

The Elephant in the Room: Safety and Build Quality Concerns

We cannot conduct a thorough review without addressing the most significant concern raised by some users: the lack of safety certifications. The Hosyond Mini DC UPS 5V/9V/12V Multi-Voltage Output does not carry a UL or ETL listing, which are standard certifications in North America that verify a product has met rigorous safety standards. For any electronic device that is plugged in 24/7, especially one that is charging lithium-ion batteries, this is a valid and serious consideration. During our testing, our unit operated perfectly, with no excessive heat or audible electronic noise like the “coil whine” one user reported. However, the absence of these certifications means that quality control may not be as consistent across all units.

This is the fundamental trade-off of the Hosyond. It offers incredible features, versatility, and efficiency at a fraction of the cost of certified competitors. The risk is likely very low, but it is not zero. This device is best suited for an informed user who understands this trade-off, is comfortable handling lithium-ion batteries responsibly, and will install the unit in a well-ventilated area away from flammable materials. It is probably not the best choice for someone looking for a “set it and forget it” appliance to install in a less-than-ideal location and never think about again.

What Other Users Are Saying

Our findings align closely with the experiences of other users. The general sentiment is that this is a high-value, highly functional device for a specific type of customer. One user praised it as a “low-power DC backup unit” that is “far cheaper than a full-blown UPS and does not have anywhere near the overhead loss.” This perfectly captures its main advantage in efficiency.

On the other hand, the learning curve and DIY nature are common themes in critical feedback. The “confusing information” and disappointment that “batteries were not included” are frequent comments from those expecting a more consumer-friendly, plug-and-play experience. The most serious critique, which we share, comes from a user who noted the lack of “US safety certifications (no UL or ETL).” They decided the risk associated with leaving an uncertified device charging lithium batteries unattended was too great, especially after hearing a faint electronic buzzing. This is a critical data point that potential buyers must weigh heavily in their decision-making process.

How Does the Hosyond Mini DC UPS Compare to the Alternatives?

The Hosyond Mini DC UPS 5V/9V/12V Multi-Voltage Output occupies a unique niche. To understand its value, it’s best to compare it not just to direct competitors, but to the broader category of power backup solutions.

1. Tripp Lite 750VA UPS Battery Backup

Sale
Tripp Lite AVR750U 750VA UPS Battery Backup, 450W AVR Line Interactive, USB, Ultra-Compact, Black
  • MINI UPS BATTERY BACKUP: 750VA UPS provides 12-outlets total. Six outlets provide both battery backup and surge protection, and six outlets provide only surge protection. Features Pure Sine Wave in AC...
  • AUTOMATIC VOLTAGE REGULATION: AVR UPS protects your sensitive tech equipment and extends the life of the UPS battery by correcting minor power flucuations, all without switching to battery power....
  • HOME & OFFICE UPS: Provides 5ft power cord & bottom mounting tabs for wall-mount installation. Internal battery is easy replaceable with Tripp Lite's RBC51 cartridge. UPS filters out disruptive EMI/...

The Tripp Lite AVR750U represents the traditional AC UPS approach. It’s a much larger, heavier unit designed to power AC devices like desktop computers, monitors, and gaming consoles. It provides battery backup through standard wall outlets. To power a router with this, you would plug the router’s original power brick into it. While this is simpler and carries the trust of a major brand with full safety certifications, it’s incredibly inefficient. The Tripp Lite has to convert battery DC to AC, and then your router’s brick converts that AC back to DC, wasting significant energy in the process. This is the right choice for someone needing to protect a computer, but it’s overkill and inefficient for just network gear.

2. SKE SMART KEY ENERGY 600VA UPS Battery Backup

600VA/360W Ups Battery Backup and Surge Protector,Computer Uninterruptible Power Supply Units,SKE...
  • ★Protect your work and life:Protect desktop computers,workstations,networking devices,and home entertainment devices(e.g.Modem&Router,Smartphone,PC Desktop Computer,Network-attached Storage).
  • ★AVR and Sockets:Automatic Voltage Regulation protects connected devices by stabilizing incoming voltage levels.6 Outlets provide battery backup and surge protection(Battery is charged),2 outlets...
  • ★Multi-functional intelligent LCD:Displays real-time detailed information about battery and power condition,including input voltage,output voltage,battery capacity,load capacity,etc.And can...

Similar to the Tripp Lite, the SKE 600VA is another conventional AC UPS. It offers a straightforward, all-in-one solution for keeping electronics running during an outage. Its primary advantage over the Hosyond is simplicity and the ability to power standard AC plugs right out of the box. However, it shares the same inefficiency for powering DC devices. It’s a general-purpose tool for a power outage, whereas the Hosyond is a specialized surgical instrument. If your needs are broad and you value plug-and-play convenience over efficiency and size, the SKE is a viable alternative.

3. UPC UPGRADE PARTS COMPANY RBC123 Replacement Battery

UPC UPGRADE PARTS COMPANY APCRBC123-UPC Replacement Battery for APC RBC123 UPS Systems - BN1080G,...
  • Maintenance-Free Battery: The battery is a sealed lead-acid design with a suspended electrolyte for easy installation and maintenance.
  • Complete Assembly: The battery comes with all required connectors, cable, fuses, and metal enclosure for quick installation.
  • Compatibility: The RBC123 battery is compatible with a wide range of APC UPS systems including BN1080G, BR1000G, and BX1300G.

This product isn’t a UPS at all, but a replacement battery pack for specific models of APC-branded UPS systems. We include it here to highlight a key difference in ownership philosophy. With traditional UPS units like those from APC, the internal lead-acid battery is a consumable item that needs to be replaced every few years. This product is for someone who already owns one of those systems and is performing maintenance. The Hosyond’s use of user-replaceable, non-proprietary 18650 cells offers a more flexible and potentially longer-lasting approach to battery maintenance, falling more in line with a DIY ethos than a “replace the whole proprietary module” model.

Our Final Verdict: A Niche Product for the Right User

After extensive testing, we can confidently say that the Hosyond Mini DC UPS 5V/9V/12V Multi-Voltage Output is a fantastic piece of kit, but it is not for everyone. If you are a tech-savvy user, a home lab enthusiast, or a remote worker who understands the difference between AC and DC power and is comfortable sourcing your own batteries, this device is a hidden gem. Its efficiency, versatility, and compact size are unmatched by traditional AC UPS systems for the specific task of backing up network hardware.

However, the lack of safety certifications is a significant caveat that cannot be overlooked. It represents a calculated risk. For those who prioritize peace of mind, certified products from brands like Tripp Lite, despite their inefficiencies, remain the safer bet. But for the tinkerer who wants to build a highly efficient, customized, and affordable power backup solution for their critical digital infrastructure, the Hosyond offers a compelling and powerful package.

If you’ve decided the Hosyond Mini DC UPS 5V/9V/12V Multi-Voltage Output is the right fit for your needs and you understand its unique characteristics, you can check its current price and purchase it here.

Last update on 2025-10-21 / Affiliate links / Images from Amazon Product Advertising API