SKE SMART KEY ENERGY
SKE SMART KEY ENERGY SKE DC20000 Plus Altair
Bottom line: The SKE SMART KEY ENERGY SKE DC20000 Plus Altair ($74.99 on Amazon as of 2026-10-20 22:12 UTC, orderable but not in stock): 20000mAh battery keeps a router and modem online through power outages; main trade-off: runtime isn't listed; it depends on how much power your devices draw.
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*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 20000mAh battery keeps a router and modem online through power outages
- ✓ 5V, 9V and 12V DC outputs cover most routers, modems and security cameras
- ✓ Extra USB and Type-C ports charge phones and tablets during an outage
- ✓ Built-in AVR keeps output voltage steady for connected network gear
- ✓ Slim, light body fits beside a router, in a network cabinet or in a travel bag
Cons
- ✗ Runtime isn't listed; it depends on how much power your devices draw
- ✗ DC and USB outputs only; no AC outlet for gear with a wall-plug adapter
- ✗ Check your router's voltage and barrel plug size before you buy
- ✗ LED gauge shows battery level, not minutes of runtime left
Manufacturer description
Keep your internet up when the lights go out with the SKE DC20000 Plus Altair mini DC UPS. Its 20000mAh battery sits between the wall and your WiFi router or modem. When the power drops, it keeps them running, so video calls, smart home hubs and security cameras stay connected. This SKE battery backup covers more devices than a single-voltage UPS. It has 5V, 9V and 12V DC outputs for routers, modems, ONTs and cameras, plus USB and Type-C ports for phones and tablets. You can power your network gear and charge a phone from the same unit during an outage. Built-in Automatic Voltage Regulation…
SpecPicks Verdict
SpecPicks scored SKE SMART KEY ENERGY SKE DC20000 Plus Altair using a rating × review-volume × price-fit model applied to published specs and reviews across the power protection category. SKE SMART KEY ENERGY's power protection lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for power protection of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Will the SKE DC20000 Plus Altair work with my WiFi router?
Most likely, if your router runs on DC power. The unit has 5V, 9V and 12V DC outputs, which cover most home routers, modems and security cameras. Check the voltage printed on your router's power adapter, and confirm the plug fits, before you connect it.
How long will it keep my router and modem running during an outage?
It depends on how much power your devices draw. The battery is rated at 20000mAh, but SKE doesn't publish a runtime figure in the listing. To estimate it, add up the wattage of your router and modem and compare it with the manufacturer's capacity specs.
Can I charge my phone from it during a power outage?
Yes. Along with the DC outputs, it has USB and Type-C charging ports for phones, tablets and other small electronics. Note that charging a phone uses battery capacity that would otherwise keep your network gear running.
Does it protect my equipment from voltage fluctuations?
It includes Automatic Voltage Regulation (AVR) to keep the output steady, along with built-in safety protections for routers, cameras and smart devices. For exact protection ratings, check the manufacturer's product documentation.
How do I know how much battery is left?
An LED indicator on the unit shows the remaining battery level at a glance, so you can decide which devices to keep powered during an outage. It shows charge level, not a countdown in minutes.
Key Features
- RELIABLE MINI UPS FOR ROUTERS & MODEMS: Designed to keep WiFi routers, modems, security cameras, and networking devices running during power outages. This compact battery backup helps maintain internet connectivity and supports essential smart home, office, and network equipment.
- 20000MAH BACKUP POWER WITH MULTIPLE OUTPUTS: This mini UPS for WiFi routers supports 5V, 9V, and 12V DC devices plus USB and Type-C charging. Ideal for routers, cameras, tablets, phones, and other low-voltage electronics requiring uninterrupted backup power.
- SPACE-SAVING MINI UPS FOR HOME OR TRAVEL: This back up power supply for power outages has a slim, lightweight design that fits easily near routers, network cabinets, or media setups. Portable format makes it suitable for travel, temporary workspaces, or emergency backup situations.
- STABLE POWER WITH BUILT-IN AVR PROTECTION: Automatic Voltage Regulation helps maintain consistent power output, while integrated safety protections support reliable operation of routers, cameras, and smart devices during power interruptions.
- INTELLIGENT BATTERY STATUS INDICATOR: The LED indicator lights of our backup UPS display remaining battery capacity at a glance, helping you monitor backup levels and plan device usage during outages.
Full Specifications
| Brand | SKE SMART KEY ENERGY |
|---|---|
| Color | Black |
| Runtime | 7 hours |
| Voltage | 12 volts |
| Wattage | 20 watts |
| Amperage | 2 A |
| Unit Count | 1 Count |
| Form Factor | Rack |
| Connectivity | USB, WiFi |
| Model Number | 20000mAh |
| Input Voltage | 12 volts |
| Maximum Power | 20 watts |
| Connector Type | USB |
| Output Voltage | 230 volts_of_alternating_current |
| Output Wattage | 20 watts |
| Frequency Range | 50/60 Hz (± 3 Hz) |
| Item Dimensions | 4.2 x 8.1 x 1.3 inches |
| Power Plug Type | Type A - 2 pin (North American) |
| Battery Cell Type | Lithium |
| Number of Outlets | 5 |
| Full listing 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 |
Ready to buy?
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 is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-20. Price and availability subject to change.
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