SKE DC20000 Plus Altair - Mini DC UPS 20000mAh Battery Backup & Surge Protector
Quick take
The SKE DC20000 Plus Altair is a compact battery backup designed for low-voltage networking gear like routers, modems, and some camera or monitoring setups. It offers multiple DC output options (5V, 9V, 12V) plus USB-A and USB-C charging, and it includes built-in voltage regulation for steadier output during outages. The main buying caveat is that real-world runtime depends heavily on your device load, and long-term reliability signals in reviews are limited and mixed.
Pros and cons
Pros
- Multiple DC outputs (5V, 9V, 12V) plus USB-A and USB-C for common networking and smart device charging needs.
- Works for router and similar low-voltage setups, with users reporting uninterrupted operation during outages.
- LED battery status indicator makes it easier to gauge remaining charge at a glance.
- Compact, portable form factor that can sit near a router or network cabinet.
Cons
- Runtime is load-dependent, so high-draw devices may drain the battery quickly.
- Review evidence on long-term reliability is mixed, with at least one report of early failure and lack of support response.
- Battery indicator LEDs can be very bright, which may not be ideal in bedrooms or quiet spaces.
What buyers think
Buyer-review evidence for the SKE DC20000 Plus Altair is largely centered on practical outage performance and day-to-day usability. Several users describe successful runtime for networking equipment during power interruptions (for example, keeping a router running for hours without noticeable battery draw in a short test window, and powering other 12V-compatible setups). The device’s build feel and compact footprint also come up, and the LED battery indicators are frequently mentioned for their visibility. On the downsides, reliability feedback includes at least one early charging failure report, but broader patterns are hard to confirm because review detail varies and some negative feedback is isolated. Overall, expectations should be set around low-voltage networking loads and conservative outage-duration needs.
How this mini DC UPS is meant to help
This is not a full-size home UPS that powers standard AC appliances. Instead, it is a battery backup that supports low-voltage DC power for networking and smart devices. The 20000mAh battery capacity is paired with multiple output options, so you can match the UPS to the input requirements of your router, modem, ONT, camera system, or compatible accessories.
SKE DC20000 Plus Altair specs that matter for buying
- Battery capacity: 20000mAh (lithium battery cell type).
- Outputs: DC outputs listed for 5V, 9V, and 12V, plus USB-A and USB-C charging.
- Power limit: 20W maximum power (runtime will drop if your connected devices draw more).
- Input: 12V (unit is rated for 12V input charging).
- Form factor: compact, slim device intended to sit near networking equipment.
- Protection features: built-in automatic voltage regulation (AVR) and safety protections for steadier output during interruptions.
- Battery indicator: LED status indicators to show remaining battery capacity.
Runtime expectations: why load matters
The manufacturer’s general battery runtime figure is listed as about 7 hours, but practical runtime can vary based on what you power and how much current the connected device draws. In reviews, some users report keeping a router online for several hours during an outage, and others describe longer operation when running specific low-voltage loads (such as certain 12V-compatible networking or smart setups). If your router’s power adapter is higher wattage than typical networking gear, or if you plan to run multiple hungry devices at once, you should assume runtime may be shorter than the headline figure.
Pros and cons for different buyers
Best fit for
- Home users and small offices who want internet to stay up during brief outages by backing up a modem/router pair.
- Smart device and networking setups that can accept 5V, 9V, or 12V DC inputs or can charge via USB-A/USB-C.
- Travel or temporary workspaces where you want a compact backup near your network gear rather than a larger UPS.
Who should think twice
- Anyone needing AC power for appliances or higher-wattage devices. This is aimed at low-voltage DC networking loads.
- Buyers who need predictable, day-long runtime under heavier loads, since the 20W max power and load-dependent runtime can significantly affect how long it lasts.
- People sensitive to bright LEDs, since the battery status indicator can be very noticeable in darker rooms.
Setup and everyday usability
Users describe straightforward use: the UPS comes with cabling/connector options for common low-voltage inputs, and it is designed to handle automatic uninterrupted power so your router or modem does not have to be manually switched during an outage. Battery charge visibility is also a practical plus, because it helps you decide whether you should conserve battery time or power-cycle non-essential devices.
One practical point to check before buying is whether your devices’ inputs match the available output ports you plan to use (5V, 9V, 12V, or USB-A/USB-C). If you mismatch voltage, you risk unstable operation or incompatibility.
Verdict: is the SKE DC20000 Plus Altair worth it?
The SKE DC20000 Plus Altair is a strong option if you need a compact mini DC UPS for keeping low-voltage networking equipment running through outages, especially when your gear can use 5V/9V/12V DC or USB charging. The biggest decision factors are your device power draw (because of the 20W max power) and your outage expectations, since runtime depends on load. Reliability feedback includes some early-failure concern, so it is worth treating this as a targeted backup for essential connectivity rather than a guaranteed long-duration solution for heavier setups.
FAQ
How long will the SKE DC20000 Plus Altair run during an outage?
Runtime depends on what you power and how much current your devices draw. The unit is rated for up to about 7 hours under typical conditions, but real-world time can be shorter if your load approaches the 20W maximum power.
What devices can this mini DC UPS power?
It is designed for low-voltage networking and smart devices, such as routers, modems, fiber ONTs, cameras, and similar equipment. It provides DC output options (5V, 9V, 12V) plus USB-A and USB-C charging for compatible devices.
Do I need to use the 5V, 9V, or 12V ports?
You should match the port voltage to your device’s required DC input. If your device accepts USB charging instead, USB-A or USB-C may be a better fit, but you still need to ensure compatibility with the device’s charging requirements.
Is it safe for networking equipment during power outages?
The UPS includes automatic voltage regulation (AVR) and integrated safety protections intended to provide steadier output for compatible electronics during interruptions.
Will it work in a bedroom since the battery indicator is on?
Some users report the LED battery indicators are very bright. If the device will be near a sleeping area, you may want to plan placement accordingly.
What should I verify before buying?
Check the voltage and type of input your modem/router or other devices require (5V/9V/12V DC, or USB-A/USB-C), and confirm your total expected power draw stays within the UPS’s 20W maximum power.
Specifications
| Product Title | SKE DC20000 Plus Altair - Mini DC UPS 20000mAh Battery Backup & Surge Protector for Router & Modem - Compact, Portable Uninterruptible Power Supply with 5V/9V/12V Outputs, USB & Type-C Charging, WiFi |
|---|---|
| Category | Electronics > Computers & Accessories > Computer Accessories & Peripherals > Uninterruptible Power Supply (UPS) |
| Brand | SKE SMART KEY ENERGY |
| Manufacturer | SKE SMART KEY ENERGY |
| Model Number | 20000mAh |
| Item Weight | 0.65 Kilograms |
| Product Dimensions | 4.2"D x 8.1"W x 1.3"H |
| Color | Black |
| Voltage | 12 Volts |
| Amperage | 2 Amps |
| Form Factor | Rack |
| Input Voltage | 12 Volts |
| Maximum Power | 20 Watts |
| Output Voltage | 230 Volts (AC) |
| Power Plug Type | Type A - 2 pin (North American) |
| Connector Type | USB |
| Number of Outlets | 5 |
| Battery Average Life | 7 Hours |
| Output Wattage | 20 Watts |
| Wattage | 20 watts |
| Frequency Range | 50/60 Hz (± 3 Hz) |
| Runtime | 7 hours |
| Specification Met | VDE |
| Item Dimensions D x W x H | 4.2"D x 8.1"W x 1.3"H |
| Item Dimensions | 4.2 x 8.1 x 1.3 inches |
| Battery Cell Type | Lithium |
| Enclosure Material | Plastic |
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