myenergi Zappi GLO vs EO Mini Pro 3: Solar Specialist vs Space Saver

Solar Specialist vs the Smallest Charger on the Market

These two chargers sit in an interesting space. Both are British-designed, both offer solar diversion, and both support smart tariff charging — yet they take radically different approaches to the job. The myenergi Zappi GLO is the UK's gold-standard solar charger, built to anchor a whole-home energy ecosystem. The EO Mini Pro 3, meanwhile, is barely larger than a paperback book, designed to disappear into tight spaces while still delivering genuinely smart charging.

If you're weighing these two up, chances are you've got solar panels (or you're planning them) and you want a charger that does more than simply push electrons into your car. The question is whether you need the Zappi GLO's unmatched solar intelligence — or whether the EO Mini Pro 3's compact form factor and solid feature set are enough to get the job done at a lower price.

In a nutshell:

• myenergi Zappi GLO (£779): The undisputed king of solar diversion, with three charging modes and a full home energy ecosystem behind it.
• EO Mini Pro 3 (£699): The smallest charger on the market with CT-clamp solar diversion and Ethernet connectivity included as standard.

Spec Comparison

Solar Diversion: Where the Zappi GLO Pulls Away

This is the headline difference, and it's significant. The Zappi GLO offers three distinct charging modes — Eco, Eco+, and Fast — that give you granular control over how much grid power you're willing to use. In Eco+ mode, the charger will only draw surplus solar energy, meaning your car charges entirely for free when the sun is shining. Eco mode blends solar surplus with grid power to maintain a minimum charge rate, while Fast mode ignores solar altogether and charges at full speed. This level of control is genuinely unmatched in the UK market, as electriccarguide.co.uk notes in its 9/10 performance rating.

The EO Mini Pro 3 does offer solar diversion via an included CT clamp, and credit where it's due — bundling the CT clamp as standard saves you the hassle and cost of buying one separately. But the implementation is simpler. It lacks the Zappi's multi-mode sophistication, and you won't get the same precision in balancing solar surplus against grid draw.

If you have a 4kW+ solar array and genuinely want to maximise self-consumption, the Zappi GLO is the clear winner here. But if your solar panels are modest or you mainly charge overnight on a cheap tariff anyway, the EO's basic solar diversion may be perfectly adequate.

Smart Tariff Integration

Both chargers play nicely with the UK's growing range of time-of-use tariffs, though they take slightly different approaches. The Zappi GLO is compatible with Octopus Intelligent Go — the gold-standard smart EV tariff that extends your off-peak window and offers rates around 7p/kWh. As myenergi.com confirms, the Zappi integrates with all popular low-cost tariffs, and the myenergi app lets you schedule charging to coincide with the cheapest slots.

The EO Mini Pro 3 offers smart tariff presets for Octopus Go (7.5p/kWh between 00:30 and 04:30), EDF Go Electric, and others. It also has an interesting trick up its sleeve: the British Gas/Hive Power+ integration, which credits back 25% of your charging costs. If you're already in the Hive ecosystem, that's a meaningful saving — though it does lock you into British Gas as your energy supplier.

For a typical UK driver covering 7,400 miles per year in a Tesla Model 3 (roughly 2,114 kWh annually), charging on Octopus Intelligent Go at ~7p/kWh would cost around £148 per year. The EO's Hive Power+ cashback could theoretically bring costs even lower if you're on a compatible British Gas tariff, but the maths depends heavily on your specific tariff rate.

Build Quality, Design, and Connectivity

The physical difference between these two is striking. The Zappi GLO measures 439 × 282 × 130mm and weighs 5.4 kg — not enormous, but a substantial unit on your wall. The EO Mini Pro 3, at just 215 × 140 × 100mm and 2.5 kg, is genuinely A5-sized. If you're mounting a charger in a narrow garage, a tight car port, or anywhere space is at a premium, the EO may be your only realistic option.

The Zappi GLO carries an IP65 rating, meaning it's fully protected against water jets from any direction — ideal for exposed driveways. The EO Mini Pro 3's IP54 rating protects against splashing water but isn't quite as robust in truly exposed locations. For most sheltered UK installations this won't matter, but if your charger will face the full brunt of British weather, the Zappi's higher rating offers extra peace of mind.

On connectivity, the EO actually has the edge. It includes Ethernet alongside Wi-Fi and Bluetooth, providing the most reliable connection option — particularly useful if your charger is in a garage with poor Wi-Fi signal. There's also an optional 4G add-on for truly remote locations. The Zappi GLO relies on Wi-Fi and Bluetooth only, with no 4G fallback. That said, the Zappi GLO does integrate with the broader myenergi ecosystem — including the eddi hot water diverter and libbi battery storage — giving it a whole-home energy management capability the EO simply can't match.

The Zappi GLO also supports RFID access for up to 126 users, making it surprisingly practical for shared driveways, rental properties, or small business settings, as evergy.co.uk highlights in its listing.

Power and Charging Speed

The Zappi GLO offers 7kW on single-phase (the vast majority of UK homes) and 22kW on three-phase — future-proofing for the rare UK property with a three-phase supply. The EO Mini Pro 3 delivers 7.2kW on single-phase only. In practice, the difference between 7kW and 7.2kW is negligible — we're talking minutes over an eight-hour overnight charge.

Cable length is worth noting: the Zappi GLO's 6.5-metre tethered cable gives you noticeably more reach than the EO's 5-metre cable. If your parking spot is any distance from the charger, that extra 1.5 metres could save you from needing a longer cable run during installation.

Price and Value

The £80 price gap isn't dramatic, but it does raise a fair question: what are you getting for the extra money? If you have solar panels, the answer is clear — the Zappi GLO's three-mode solar diversion is worth every penny and will pay for itself over time through free solar charging. If you don't have solar, that £80 buys you a longer cable, a higher IP rating, and ecosystem expandability — worthwhile, but not essential.

The EO Mini Pro 3's potential British Gas Power+ cashback (25% of charging costs) could recoup the price difference within a couple of years for eligible users, making it surprisingly competitive on total cost of ownership.

Who Should Buy Which?

Buy the myenergi Zappi GLO if:

• You have solar panels and want the best solar diversion technology available
• You're building a whole-home energy system with myenergi's eddi or libbi products
• You need RFID access for multiple users on a shared driveway
• Your charger will be fully exposed to the elements (IP65 rated)
• You want a longer 6.5-metre cable for flexible parking positions

Buy the EO Mini Pro 3 if:

• Space is genuinely tight — nothing else comes close to its A5-sized footprint
• You want Ethernet connectivity for a rock-solid connection in a garage with poor Wi-Fi
• You're a British Gas/Hive customer who can benefit from the 25% Power+ cashback
• You want basic solar diversion without paying the Zappi premium
• You need optional 4G connectivity for a remote installation

Our recommendation: For most buyers with solar panels, the myenergi Zappi GLO is the better charger. Its Eco/Eco+ modes are genuinely best-in-class, and the myenergi ecosystem gives you a clear upgrade path as home energy management becomes increasingly important. But if you're working with a cramped installation space, or you don't have solar and want a compact, well-connected smart charger with solid tariff support, the EO Mini Pro 3 is a capable and slightly more affordable alternative. Size really is its superpower — and for some homes, that alone makes the decision.

For the full specs-level breakdown, see our myenergi Zappi GLO vs EO Mini Pro 3 comparison page.

Read our full myenergi Zappi GLO review or EO Mini Pro 3 review.

Compare all chargers →