APC Back-UPS 500VA
(7 reviews)
Mains dropout or surge at the campsite? This compact APC UPS keeps a router, a Starlink dish or a NAS protected in a van, on a boat or at home.
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Characteristics
- Power: 500 VA / 300 W
- Outlets: 3 IEC C13 outlets
- Regulation: AVR (no battery drain)
- Network: Line protection up to 1 Gbit/s
- AVR, universal IEC outlets, compact
Detailed overview: APC BX500MI UPS
In a van, on a boat or at home, a router or a Starlink dish wired straight into the mains does not always survive a sharp power cut or a surge from a poorly protected shore power pedestal. The APC Back-UPS BX500MI is built for exactly this: a compact line-interactive UPS that protects fixed network equipment, distinct from a solar inverter that runs a photovoltaic setup or an onboard 12V-to-230V converter, two different devices it should never be confused with.
At 500 VA / 300 W, it comfortably covers a router, a Starlink dish, a small NAS or a network switch. Its automatic voltage regulation (AVR) corrects voltage sags and surges without drawing on the battery, a real advantage on a campsite or marina supply that is not always stable. The 3 output sockets are IEC C13: universal and reliable, though they do mean the connected equipment already needs a cord of that type, or an IEC-to-mains adapter for a typical consumer router.
Network line protection up to 1 Gbit/s rounds out the package, a real plus for anyone who has already lost a router or a hub to a surge travelling down an Ethernet cable. The tower stays genuinely compact (around 4.5 kg), easy to tuck into a van or boat's electrical locker. The sealed lead-acid battery is user-replaceable, extending the UPS's working life beyond its original cell.
Runtime stays modest, typically a few minutes at normal load: enough to ride out a brief glitch or trigger a clean shutdown, not to keep working off-grid for long. For the price, the BX500MI remains a safe bet for protecting fixed network gear, whether at home or on the move.
EAN: 0731304435648
Comparison
Under £90, the APC Back-UPS BX500MI goes up against several small UPS units popular for protecting a router or a NAS, in searches such as “APC BX500MI vs CyberPower” or “best UPS for a router”. Here is how it stacks up against three of its most compared alternatives: the CyberPower BU600E-FR, one of its closest budget rivals; the Eaton 3S 550 FR, an alternative with more outlets; and the Riello iPlug IPG 600, a compact option with a built-in extension block.
| Criterion | APC Back-UPS BX500MI | CyberPower BU600E-FR | Eaton 3S 550 FR | Riello iPlug IPG 600 |
|---|---|---|---|---|
| Power | 500 VA / 300 W | 600 VA / 360 W | 550 VA / 330 W | 600 VA / 360 W |
| Outlets | 3 (IEC C13) | 3 (French 2P+E) | 6 (3 battery-backed) | 8 (5 battery-backed) |
| AVR regulation | Yes | Yes | Not stated | Not stated |
| Network protection | Yes, up to 1 Gbit/s | Basic RJ11 | RJ45/phone | Not stated |
| Warranty | 2 years | Not stated | 2 years | Not stated |
| Observed price | £82.65 | ≈ £66 | ≈ £83 | ≈ £81 |
Overall, the APC Back-UPS BX500MI stands out for the most complete network protection (up to 1 Gbit/s) and universal IEC outlets, ideal for professional or semi-professional network gear. The CyberPower BU600E-FR remains a credible, slightly cheaper alternative with standard mains outlets that are more convenient for direct home use, while the Eaton 3S 550 FR and the Riello iPlug IPG 600 offer more outlets to protect several devices at once, at the cost of less thorough network protection.
Related video
Video: APC Back-UPS BX Series - Published on 18/11/2024
Our tester's review: Dawid Lojewski
Running behind our van's Starlink router for a few weeks now, this little APC keeps a low profile, which is exactly what you want from it. On the small voltage dips you get from a campsite hookup, the AVR soaks them up without even switching to battery, saving runtime for a genuine outage. The tower format is genuinely compact, tucking easily into an electrical locker without hogging space. The one catch for mobile use: the 3 outlets are IEC C13, not standard wall sockets, so your router or dish needs to already use that type of cord, or you will need an adapter. Runtime stays modest, a few minutes at normal load, plenty to ride out a brief glitch or shut down cleanly, not to keep working off-grid for long. For protecting sensitive network gear on a budget, it does the job without fuss.
Frequently asked questions: APC BX500MI UPS
Yes, that is a common use case: its 500 VA comfortably covers a Starlink dish and its router, and the AVR absorbs voltage swings from a campsite or marina supply without draining the battery unnecessarily.
No, the 3 outlets are IEC C13 (like on a desktop PC), not standard mains sockets. Check that your equipment already uses that type of cord, or plan for an IEC-to-mains adapter.
No relation: a solar inverter converts DC from the panels into AC for the installation. The BX500MI is a UPS that protects a fixed electronic device from mains power cuts, a completely different job.
A few minutes at normal load, enough to ride out a brief glitch or trigger a clean shutdown of a router or NAS. This is not a UPS designed to keep working off-grid for long.
Yes, it includes data line protection up to 1 Gbit/s, useful to stop a surge travelling down an Ethernet cable from damaging a router or hub connected to the UPS.
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Published on 04/09/2026