Best UPS October 2026
Compare the best uninterruptible power supplies (UPS) to protect your critical hardware and prevent data loss during power outages. This independent ranking highlights key specifications, runtime figures, and features across top models so you can find the right unit for your setup.
Last updated: 6 October 2026
UPSs: Top 5
1
APC Smart-UPS SC SC450RMI1U
from £365.993 stores
from £365.99
3 stores
2
APC Smart-UPS SUA5000RMI5U
from £4,684.702 stores
from £4,684.70
2 stores
3
APC Smart-UPS X SMX3000HV
from £2,126.694 stores
from £2,126.69
4 stores
4
APC Smart-UPS SMT2200RMI2UC
from £718.525 stores
from £718.52
5 stores
5
APC Back-UPS Pro BR900MI
from £231.615 stores
from £231.61
5 stores
The APC Smart-UPS SC SC450RMI1U is a compact 1U rack-mountable line-interactive UPS built for shallow networking racks. It delivers 280 W (450 VA) of backup power with surge protection and hot-swappable battery support. Its slim profile fits entry-level network switches, routers, and light IT equipment.
Pros
Compact 1U rack-mount design
Hot-swappable battery
Includes surge and noise filtering
Cons
Low 280 W power capacity
Modified square wave output
Only 4 power outlets
The APC Smart-UPS SUA5000RMI5U delivers heavy-duty power protection with 4,000 W capacity in a 5U rack-mount chassis. It provides pure sine wave output across 10 battery-protected outlets, including high-current C19 connectors. Built for demanding enterprise environments, it features hot-swappable dual battery packs and fast 3-hour recharging.
Pros
Massive 4,000 W (5,000 VA) capacity
Pure sine wave output
10 power outlets with C13 and C19
Fast 3-hour recharge time
Cons
Very heavy at 97.73 kg
Requires 5U of rack space
Hardwired input connection
The APC Smart-UPS X SMX3000HV is a high-efficiency 3,000 VA line-interactive UPS designed for enterprise server racks. It outputs 2,700 W of clean sine wave power across 10 outlets and supports external battery packs for extended runtime. An intuitive front display and hot-swappable battery design make ongoing maintenance straightforward.
Pros
High 2,700 W power output
Pure sine wave output
External battery pack support
High 98.5% efficiency rating
Cons
Relatively heavy at 38.6 kg
No standard Schuko outlets
The APC Smart-UPS SMT2200RMI2UC utilizes online double-conversion topology to deliver continuous, zero-transfer-time sine wave power to mission-critical hardware. It supplies up to 1,980 W across 8 protected outlets within a 2U rack-mount frame. Built-in network management and display monitoring make it a solid pick for sensitive IT infrastructure.
Pros
Online double-conversion topology
Clean sine wave power output
Fast 3-hour recharge time
Compact 2U rack form factor
Cons
Short 5-minute full load runtime
Fixed 220 V voltage range
Weighs 42.31 kg
The APC Back-UPS Pro BR900MI is a standalone desktop UPS providing 540 W (900 VA) of power protection for home offices, workstations, and network gear. It features an integrated LCD display, surge protection, and a hot-swappable battery. Six output outlets ensure your essential devices stay online during quick power drops.
Pros
Compact tower design (7 kg)
Built-in status display
Hot-swappable battery
Includes 6 power outlets
Cons
Long 12-hour recharge time
Simulated sine wave output
Only 3 minutes runtime at full load
Compare specifications
| Capacity | 450 VA | 5000 VA | 3000 VA | 2200 VA | 900 VA |
|---|---|---|---|---|---|
| Type of construction (Topology) | Line-interactive | Line-interactive | Line-interactive | Online / Double-conversion | Line-interactive |
| Management interface | USB, SmartSlot, DB-9 / RS-232 | USB, Network, SmartSlot, DB-9 / RS-232 | USB, SmartSlot, DB-9 / RS-232 | USB, SmartSlot, DB-9 / RS-232 | USB |
| Product weight | 10.18 kg | 97.73 kg | 38.6 kg | 42.31 kg | 7 kg |
| Features | PFC (Power Factor Correction), Noise filter / surge protection, Hot-swap battery, Display, Designed for rack mounting | Noise filter / surge protection, Hot-swap battery, Display, Designed for rack mounting | Noise filter / surge protection, Support for external battery, Hot-swap battery, Display, Designed for rack mounting | Noise filter / surge protection, Display, Designed for rack mounting | Noise filter / surge protection, Hot-swap battery, Display |
How we create the list
The ranking is updated monthly and is based on data we collect from our own platform. Products that rank highly are popular among our users while also maintaining high quality according to editorial expert assessments. Specifically, we weigh how many users follow the product via price alerts or lists, how it is rated by experts and users, as well as how much traffic it generates to stores and how well it is represented in retail. The texts on this page are AI-generated and created to give you a quick and clear overview. No products are paid placements – the ranking is driven solely by data.
