Tiny Footprint or Decade-Long Durability? Choosing Between the EO Mini Pro 3 and Simpson & Partners Home 7
These two chargers occupy very different corners of the UK market. The EO Mini Pro 3 is the smallest home charger you can buy — roughly the size of a paperback novel — and packs in solar diversion, Ethernet, and smart tariff presets at £550. The Simpson & Partners Home 7 takes the opposite approach: a larger, heavier unit built from anodised aluminium with a 10-year enclosure warranty and optional premium finishes, at £649.
In a nutshell:
- EO Mini Pro 3: Smallest charger on the market, CT clamp included for solar, triple connectivity options, £550
- Simpson & Partners Home 7: Premium UK-made build, 10-year enclosure warranty, three-phase capable, £649
The £99 gap between them buys very different things depending on your priorities.
Is the EO Mini Pro 3's Size Actually a Deciding Factor?
For most driveways, no — any charger will fit fine. But the EO Mini Pro 3 exists for the situations where others don't. At 215mm × 140mm × 100mm and just 2.5 kg, it can tuck into a narrow passage between a garage wall and a fence, mount discreetly beside a front door, or sit on a post where a full-sized unit would look absurd. The Simpson & Partners Home 7, at 350mm × 200mm × 110mm and 5.5 kg, is a perfectly normal size — but it's more than twice the volume.
If your installation spot is genuinely constrained, the EO might be your only realistic option among capable smart chargers. If space isn't an issue, this advantage evaporates.
Does the Simpson & Partners Home 7's Warranty Justify the Premium?
Ten years on the enclosure is extraordinary. Most chargers — the EO Mini Pro 3 included — top out at three years. That aluminium housing is built to last in British weather, and the warranty backs it up. But read the fine print: it covers the enclosure, not the electronics inside. Still, the physical housing is what takes the brunt of rain, UV, and temperature swings, so this is meaningful protection.
The EO's three-year warranty is industry-standard but unremarkable. If you're the type who installs something and wants to forget about it for a decade, the Simpson & Partners has a compelling edge. For anyone planning to move house or upgrade their car within five years, it matters less.
Smart Features and Connectivity: EO Mini Pro 3 Has the Edge
The EO Mini Pro 3 is better connected, full stop. Wi-Fi, Bluetooth, and Ethernet as standard — plus optional 4G for rural installations where Wi-Fi doesn't reach the driveway. The Simpson & Partners Home 7 offers Wi-Fi only. If your router is at the opposite end of the house, that Ethernet port on the EO could save you from the frustration of a charger that intermittently drops offline.
Both support smart tariff scheduling, with the EO offering presets for Octopus Go, EDF Go Electric, and others. The EO also bundles a CT clamp for solar diversion — no extra hardware needed. If you have panels or plan to install them, that's a genuine saving versus buying a separate clamp later. The Simpson & Partners is listed as solar compatible, but the EO's included CT clamp makes the setup more straightforward. For a deeper look at solar-ready options, see our best EV charger for solar panels guide.
One niche EO perk: if you're in the British Gas/Hive ecosystem, their Power+ feature credits back 25% of charging costs. That could recoup the charger's price within a couple of years of regular charging.
Does Three-Phase Support on the Simpson & Partners Matter?
The Simpson & Partners Home 7 can deliver 22kW on a three-phase supply. The EO Mini Pro 3 is single-phase only, capped at 7.2kW. On paper, that's a huge difference. In practice, the vast majority of buyers reading this page will be on single-phase, where both chargers deliver roughly the same 7–7.2kW. The Simpson & Partners drops to 7kW on single-phase — fractionally slower than the EO's 7.2kW, which is itself fractionally slower than the 7.4kW some competitors offer. None of these differences will change your morning routine.
If you happen to have three-phase power, or you're building a new property where it's being installed, the Simpson & Partners becomes far more interesting — 22kW is a serious charge rate. Check our best smart EV charger guide for other three-phase options.
Which Should You Buy?
Buy the EO Mini Pro 3 if:
- Your installation space is tight or awkward
- You want solar diversion included without buying extra hardware
- You value robust connectivity (Ethernet, optional 4G)
- You're a British Gas/Hive customer who can use the Power+ cashback
Buy the Simpson & Partners Home 7 if:
- You want the longest enclosure warranty available — 10 years
- Premium build quality and aesthetics matter (Accoya wood and colour options)
- You have or plan to get a three-phase supply
- You prefer UK-manufactured hardware and don't mind a smaller brand
For most Tesla owners on a single-phase supply, the EO Mini Pro 3 at £550 delivers more usable smart features and better connectivity for less money. The Simpson & Partners Home 7 is the pick if you're buying for the long haul and want a charger that still looks and functions perfectly a decade from now. Both are solid — your decision comes down to whether you're optimising for today's features or tomorrow's durability.