EO Mini Pro 3 vs Rolec EVO: the £101 size question

The £101 size question

Two OZEV-approved 7kW chargers a hundred quid apart, and the gap is almost entirely about one thing: how much wall you have. The Rolec EVO is £449, British-built, five-year warranty, and comes with install-saving protection baked in. The EO Mini Pro 3 is £550 and the smallest mainstream charger sold in the UK — A5-sized, 2.5 kg, designed for walls that can't host a 260 mm square.

The shortest version:

• EO Mini Pro 3 — the one you buy when size or British Gas Hive Power+ cashback is the deciding factor.
• Rolec EVO — the one you buy when neither of those apply. Cheaper unit, longer warranty, cheaper install.

When the EO Mini Pro 3 earns its £101 premium

Two scenarios, and only two. The first is physical. At 215 × 140 × 100 mm the EO Mini Pro 3 is smaller than the competition — notably smaller than the 260 × 260 mm Rolec EVO. If your mounting spot is a narrow pier between a door and a drainpipe, or a recessed alcove, or a pillar in a shared car park where planners have been difficult, the EO often fits where nothing else does. This is a real use case, not a marketing line.

The second is tariff-adjacent. The Hive Power+ variant of the EO credits back 25% of charging costs when you're on the British Gas EV Power+ tariff. That's a structural discount no other charger on the UK market can match — but it only works inside the British Gas ecosystem. If you're on Octopus Intelligent Go, Octopus Go, or E.ON Next Drive, the Hive angle is irrelevant and the EO loses its trump card.

Beyond those two cases, the EO's 7.2kW vs the Rolec's 7.4kW is a rounding error, its three-year warranty is shorter, and its solar diversion via CT clamp is basic next to what the Zappi GLO does at the top of the market.

Why the Rolec EVO is the default at this price

The Rolec EVO is one of the quieter value propositions in the catalogue. £449 buys an untethered 7.4kW unit with Wi-Fi 6, Bluetooth 5.0, Ethernet, OCPP 1.6J, a CT clamp in the box for Eco+ surplus solar, and — crucially — built-in PME fault detection plus a Type A RCD with 6mA DC protection.

That last bit matters financially. Built-in PME fault detection means your installer doesn't need a separate earth rod or PEN device, which typically saves £100–£250 on labour and parts. The onboard RCD saves a bit more. On most jobs the effective installed price of the Rolec lands noticeably below the EO Mini Pro 3 — and below the Tesla Wall Connector and Ohme Home Pro while we're at it.

The five-year warranty, from a Boston, Lincolnshire manufacturer with a decade of commercial charging behind it, quietly puts the Rolec ahead of the Easee One and the EO on cover. The trade-off is honest: untethered only, no 4G fallback, no on-unit display, and the consumer app is newer than Ohme's or Hypervolt's.

Solar and smart tariffs

Both chargers handle solar. The Rolec's Eco+ mode is the more sophisticated of the two — genuine surplus-only charging via the included CT clamp, modulating in real time. The EO's diversion is simpler. If solar is the main event, neither of these is the charger to buy; the Zappi GLO comparison covers that angle properly.

For smart tariffs, neither has a direct Octopus Intelligent Go API integration — for that you want the Ohme Home Pro or Ohme ePod. Both the Rolec and the EO will schedule reliably against fixed-window tariffs like Octopus Go or British Gas Electric Drivers, which is what most buyers at this price actually need.

The verdict

Buy the EO Mini Pro 3 if:

• Your mounting location physically can't take a 260 mm unit
• You're a British Gas customer planning to use Hive Power+ cashback
• You want a tethered cable and a compact form factor in one

Buy the Rolec EVO if:

• You want the lowest installed price and a five-year warranty
• You already own a Type 2 cable or don't mind buying one
• Surplus-solar charging via Eco+ is on your list

On a typical wall, with a typical supplier, the Rolec is the charger to put up. £101 cheaper on the unit, usually £150 or so cheaper to install, two extra years of warranty, and made in Lincolnshire. The EO is the right answer to a narrow question — size, or Hive. If neither is your question, the Rolec wins.