Researched, not hands-on tested.How we review ›
all judged against UPS units at a similar priceThe APC Back-UPS BE850G2-UK scores 5.4/10 overall, ahead of the APC Back-UPS BE650G2-UK at 5.3/10.
The APC Back-UPS BE650G2-UK leads on NAS and server integration.
The APC Back-UPS BE850G2-UK leads on capacity and runtime and battery.
They score the same on topology and waveform and UK outlets and build.
This is a compact standby UPS for a home office or small homelab with a NAS, router and switch. It suits buyers who want UK sockets, a user-replaceable battery and a USB link for a clean shutdown. It is not aimed at long outages or heavy loads.
Typically about £99.99 in the UK when we researched itCheck price at Amazon UK (opens in a new tab, affiliate link)Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details
The APC Back-UPS BE850G2-UK suits a home office or small desk setup that needs battery backup for a PC, router and switch. It offers six battery-backed UK sockets and a published runtime table. Buyers who need confirmed NAS shutdown support or a pure sine output should check those points first.
Typically about £120 in the UK when we researched itCheck price at Amazon UK (opens in a new tab, affiliate link)Affiliate link. As an Amazon Associate I earn from qualifying purchases. Details
| Criterion | Weight | APC Back-UPS BE650G2-UK | APC Back-UPS BE850G2-UK |
|---|---|---|---|
| Topology and waveform | 25% | 4/10 | 4/10 |
| NAS and server integration | 25% | 5/10 | 4/10 |
| Capacity | 20% | 6/10 | 7/10 |
| Runtime and battery | 15% | 5/10 | 6/10 |
| UK outlets and build | 15% | 7/10 | 7/10 |
| Overall | 5.3/10 | 5.4/10 |
| Spec | APC Back-UPS BE650G2-UK | APC Back-UPS BE850G2-UK |
|---|---|---|
| Capacity (VA / W) | 650 VA / 400 W | 850 VA / 520 W |
| Topology | Standby (offline), per distributor and retailer pages; not stated on APC pages | Standby |
| Output waveform | not listed | Stepped approximation to a sinewave |
| Outlets | 8 total: 6 battery backup and surge protection, 2 surge protection only; BS 1363 (UK) | 8 total: 6 battery-backed with surge protection and 2 surge-only, all BS 1363A UK sockets |
| Runtime at half load | not listed | 72 min at 50 W, 34.1 min at 100 W, 14.3 min at 200 W, 7.7 min at 300 W, 4.5 min at 400 W, 2.6 min at 500 W; no figure published at half load (260 W) |
| USB / network management | USB Type A port; no network card listed | Two USB charging ports (Type A 2.4 A and Type C); ships with PowerChute automatic shutdown software; RJ-45 port is dataline surge protection only; USB HID compatibility with NAS systems not verified |
| Battery | Sealed lead-acid, user-replaceable; RBC quantity 1 | One sealed lead-acid battery, user-replaceable (RBC17 sold separately); expected life 2 to 5 years; typical recharge 16 hours |
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