EO Mini Pro 3 vs Indra Smart PRO: Compact Size vs Smart Savings

The Tiny Trailblazer vs the Practical Brit

These two chargers sit in a fascinating middle ground of the UK home EV charging market. Neither is the cheapest option you can buy, nor the most feature-packed — but both bring something genuinely distinctive to the table. The EO Mini Pro 3 is, quite simply, the smallest home charger you can buy in the UK, roughly the size of an A5 notepad. The Indra Smart PRO, meanwhile, plays the value card by including a surge protection device (SPD) as standard — a component that typically adds £100–150 to your installation bill.

If you're choosing between these two, you're likely someone who wants a competent smart charger with solar diversion capability but doesn't necessarily need the bells and whistles of an Ohme Home Pro or the eco-modes of a Zappi. You want something reliable, well-built, and sensibly priced. The question is whether you prioritise the EO's remarkably compact footprint and Hive ecosystem integration, or the Indra's lower effective cost and slightly faster charging speed.

In a nutshell:

• EO Mini Pro 3 (£699): The smallest home charger on the market with solar diversion, smart tariff presets, and Hive/British Gas Power+ cashback integration.
• Indra Smart PRO (£599): A British-made charger with an included SPD that genuinely reduces installation costs, plus a longer cable and full 7.4kW output.

Spec Comparison

Power and Charging Speed

Let's address the numbers first. The Indra Smart PRO delivers the standard UK single-phase maximum of 7.4kW, while the EO Mini Pro 3 tops out at 7.2kW. In practical terms, the difference is marginal. On a typical 60kWh Tesla battery, the EO would take roughly 8 hours 20 minutes from empty to full, versus about 8 hours 6 minutes on the Indra. That's a difference of around 14 minutes — unlikely to matter when you're charging overnight.

Where the Indra does pull ahead slightly is cable length. Its 6-metre tethered cable gives you an extra metre of reach compared to the EO's 5-metre cable. If your parking spot is a little further from your charger mounting point, that extra metre could save you from needing a longer cable run during installation. It's a small detail, but one that occasionally makes a real difference to installation complexity and cost.

Both chargers are single-phase only, which is perfectly standard for UK homes. Neither offers a three-phase option, but as electriccarguide.co.uk notes, for residential overnight charging, single-phase is all most households need.

Smart Tariff Integration and Solar Diversion

Both chargers support smart tariff scheduling and solar diversion with an included CT clamp — so you won't need to buy extra hardware for either. This is a genuine advantage over some competitors that charge extra for solar compatibility.

The EO Mini Pro 3 comes with presets for popular UK tariffs like Octopus Go (7.5p/kWh off-peak between 00:30 and 04:30) and EDF Go Electric. If you're in the Hive ecosystem, there's an added bonus: the British Gas Power+ feature credits back 25% of your charging costs, which is a meaningful saving. According to hivehome.com, this feature is a key selling point for the over 35,000 Hive drivers already using EO chargers. However, it does tie you into the Hive/British Gas ecosystem — if you're with Octopus or another provider and have no interest in switching, this benefit evaporates.

The Indra Smart PRO offers smart tariff integration with major UK providers and adds dynamic load balancing as standard. This feature automatically adjusts your charging rate based on other electrical demand in your home, protecting your supply from overload. It's a genuinely useful safety and convenience feature, particularly in older homes where the electrical supply might be closer to its limits.

For solar diversion specifically, both chargers use a CT clamp to monitor your solar generation and divert surplus energy to your car. Neither is as sophisticated as the myenergi Zappi's dedicated eco-modes, but both will do the job competently for homeowners who want to top up their Tesla with free sunshine.

App, Connectivity and Design

The EO Mini Pro 3 has a clear connectivity advantage. Alongside Wi-Fi and Bluetooth, it offers Ethernet — which provides the most reliable connection for a device that sits outside your house, potentially at the edge of your Wi-Fi range. There's also an optional 4G add-on for properties where Wi-Fi simply doesn't reach the charger location. The Indra Smart PRO sticks with Wi-Fi and Bluetooth, which will be fine for most installations but could be frustrating if your router is at the opposite end of the house.

On the app front, the Indra's offering is described as basic compared to market leaders. The EO app is more established, particularly with its Hive integration, though neither charger's app experience will rival the slickness of Ohme's or myenergi's offerings.

Design is where the EO truly stands apart. At just 215mm × 140mm × 100mm and weighing only 2.5 kg, it's genuinely tiny — about half the size and half the weight of the Indra. As tinyeco.com highlights in their roundup of the best UK chargers, compact design is increasingly important for homeowners who don't want a bulky box dominating their exterior wall. If you have limited mounting space — perhaps between a window and a drainpipe — the EO may be your only realistic option.

The Indra counters with an RFID lock for security, which is a practical feature if your charger is accessible to passers-by. The EO doesn't offer this.

Installation Considerations

Both chargers are OZEV-approved and carry an IP54 weatherproof rating, so outdoor installation is no problem for either. Standard installation costs for both fall in the typical £400–600 range.

Here's where the Indra plays its trump card: the included surge protection device. Since the 18th Edition wiring regulations, an SPD is required in most new installations. Many electricians charge £100–150 to supply and fit one. With the Indra, it's built in, which means your installation bill could be noticeably lower. This effectively narrows — or even eliminates — the price gap between the two chargers.

The EO Mini Pro 3's compact size can also simplify installation in tight spaces, potentially reducing labour time if the installer would otherwise need to work around obstacles.

Price and Value

The raw numbers favour the Indra. It's £100 cheaper at the unit level, and when you factor in the included SPD saving, the effective price difference could stretch to £200–250. That's significant. The EO's counter-argument is the British Gas Power+ 25% cashback on charging costs — but you'd need to charge quite a lot (and be in the Hive ecosystem) before that recoups the upfront difference. At typical home charging costs of around £400–500 per year, a 25% credit would save you roughly £100–125 annually, meaning it would take about two years to close the gap.

Who Should Buy Which?

Buy the EO Mini Pro 3 if:

• You have very limited wall space and need the smallest possible charger
• You're already in the Hive/British Gas ecosystem and can benefit from the 25% Power+ credit
• You want Ethernet connectivity for a rock-solid connection
• Your charger location has poor Wi-Fi and you need the optional 4G add-on
• You value a compact, discreet aesthetic on your exterior wall

Buy the Indra Smart PRO if:

• You want the lowest total installed cost — the included SPD genuinely saves money
• You prefer a longer 6-metre cable for more flexible parking positions
• You want dynamic load balancing to protect your home's electrical supply
• You value RFID security for a charger accessible to the public
• You're interested in Indra's V2G ecosystem for potential future upgrades

Our recommendation: For most UK homeowners, the Indra Smart PRO represents better value. The included SPD makes its effective installed cost considerably lower than the EO's, and it delivers the full 7.4kW with a longer cable. It's a practical, no-nonsense charger that does everything most people need. However, if space is genuinely tight on your wall, the EO Mini Pro 3 is in a class of its own — nothing else comes close to its compact dimensions. And if you're a Hive household, the Power+ cashback could tip the long-term economics back in the EO's favour.

Read our full EO Mini Pro 3 review or Indra Smart PRO review.

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