# APC Back-UPS Pro 900VA LCD (BR900MI)

Source: https://www.ranked10.co.uk/tech/best-ups-battery-backups/apc-back-ups-pro-br900mi
Ranked #4 in "Best UPS Battery Backup 2026: 9 Ranked, and Why 2200VA Isn't 2200W": https://www.ranked10.co.uk/tech/best-ups-battery-backups

- Price: £232.97 (checked on Amazon UK on 2026-09-18)
- Amazon rating: 4.4 from 198 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B07WJ3DT24?tag=ranked10-21

The APC Back-UPS Pro BR900MI takes fourth place in this guide. It is a 900VA line-interactive UPS with six IEC battery backup outlets, an LCD panel, automatic voltage regulation and a stated 42-minute runtime, priced at £232.97 and rated 4.4 out of 5 from 198 ratings on Amazon.

It is also the clearest case in this list of a listing arguing with itself. The name says 900VA. The spec table carries "Maximum Power: 900 Watts" and "Output Wattage: 900" — but the field labelled plainly "Wattage" says 540 watts. Those two figures describe the same machine and sit 360 watts apart, which is roughly the gap between running a desktop and running a desktop plus a monitor and a NAS. Read the 540-watt line before you decide what to plug in. Everything on this page is taken from the Amazon listing, not from any testing we carried out.

## Specification

| Field | Value |
|---|---|
| Price | £232.97 |
| Rating | 4.4 out of 5, from 198 ratings |
| Capacity in the title | 900VA |
| Wattage | 540 watts |
| Maximum Power (as listed) | 900 watts |
| Output Wattage (as listed) | 900 |
| Runtime | 42 minutes |
| Outlets | 6 battery backup outlets (IEC) with surge protection |

## Questions people ask

**How many watts can the APC Back-UPS Pro BR900MI actually deliver?**

The spec table gives two answers. The field marked Wattage reads 540 watts, while Maximum Power and Output Wattage both read 900. The 900VA in the product name is a VA figure rather than a watt figure, so the 540-watt line is the one to work from.

**What runtime does APC quote?**

The listing states 42 minutes. One reviewer reports keeping a router, a modem and some home automation devices running for about 45 minutes, which is in the same territory.

**How many outlets does it have?**

Six IEC outlets with battery backup and surge protection. The listing also lists IEC, USB, RJ45 and telephone connectors.

**Is a mains power cable included?**

The listing's Power Plug Type field says "No Plug", and one reviewer notes the system arrived without a mains power cable, describing it as an odd omission. A serial cable is supplied.

**Does it correct voltage fluctuations?**

The listing says automatic voltage regulation corrects fluctuations so you can work through brownouts and overvoltage, with input and output voltage both listed at 230 volts.

**What does the LCD interface show?**

APC describes it as quick and easy to read, providing information about the utility supply and the UPS condition. One reviewer found the available power figure jumps about during battery self-tests.