Two Niche Chargers, Two Very Different Strengths
Here's an unusual comparison. The GivEnergy EV Charger and EO Mini Pro 3 aren't trying to be the best all-round charger on the market — and neither succeeds at that. Instead, each one dominates a specific niche. Your decision comes down to a simple question: do you have a home battery, or do you need a charger that disappears into a tight space?
In a nutshell:
- GivEnergy EV Charger (£478): The only sub-£500 charger that can charge your Tesla from stored battery energy — solar or cheap off-peak power alike.
- EO Mini Pro 3 (£550): The smallest charger you can buy, with surprisingly capable smart tariff and solar features packed into an A5-sized box.
Does the GivEnergy Make Sense Without a Home Battery?
Bluntly: no. The GivEnergy's entire value proposition rests on its integration with home battery systems. Battery-to-EV charging means you can store cheap overnight electricity or daytime solar in your home battery, then feed it to your Tesla whenever you like. That's a genuinely different capability — not just solar diversion (which plenty of chargers offer), but stored energy transfer.
Strip that away, and you're left with a £478 charger with a basic app, limited smart tariff support, and a 5-metre cable. It works fine, but you'd get more from an Ohme Home Pro or even a cheaper unit from our cheapest EV chargers guide. The GivEnergy monitoring portal is excellent for managing whole-home energy — but only if you're already in the GivEnergy ecosystem.
Is the EO Mini Pro 3 More Than Just a Small Charger?
The size gets all the attention — 215mm × 140mm × 100mm, weighing 2.5 kg — and rightly so. If you're mounting a charger inside a cramped garage, on a narrow wall between your house and your neighbour's, or anywhere aesthetics matter, the EO Mini Pro 3 is often the only realistic option. No other charger comes close on dimensions.
But what surprised me is how much EO has crammed into that tiny shell. You get Wi-Fi, Bluetooth, and Ethernet connectivity — that triple-option approach means you're covered even if your Wi-Fi signal is patchy near your driveway. There are smart tariff presets for Octopus Go and EDF Go Electric baked in. A CT clamp is included as standard for solar diversion, which saves you the £30-50 that some competitors charge as an add-on. And if you're a British Gas customer, the Hive Power+ feature credits back 25% of your charging costs — a meaningful saving over time.
At £550, it's £72 more than the GivEnergy. That premium buys you meaningfully better connectivity, smarter energy tariff handling, and that remarkable compactness.
Solar Diversion: GivEnergy's Depth vs EO's Simplicity
Both chargers offer solar diversion, but they approach it differently. The GivEnergy can pull energy from a home battery that was charged by solar hours earlier — evening charging powered by midday sunshine. That's a level of flexibility the EO simply can't match.
The EO Mini Pro 3's CT clamp setup diverts live excess solar to your car in real time. It's competent but straightforward — if you want the most sophisticated solar integration without a battery, the Zappi remains the benchmark. The EO sits in the middle: better than chargers with no solar support, less capable than dedicated solar-first units.
For anyone with solar panels and a home battery, the GivEnergy is the obvious winner here. For solar panels without a battery, the EO's included CT clamp is a convenient, no-fuss solution.
Which Should You Buy?
Buy the GivEnergy EV Charger if:
- You have a home battery system (GivEnergy or otherwise) and want to charge your Tesla from stored energy
- You're already using the GivEnergy monitoring portal for whole-home energy management
- You want the cheapest charger that integrates battery-to-EV charging
- You prioritise solar self-consumption over smart tariff tricks
Buy the EO Mini Pro 3 if:
- Installation space is tight — no other charger will fit where this one does
- You want solid smart tariff support without paying for a premium unit like the Hypervolt Home 3 Pro
- You're a British Gas/Hive customer who can benefit from the 25% Power+ cashback
- You want the most reliable connectivity options (Ethernet is a genuine advantage over Wi-Fi-only chargers)
If you don't have a home battery and space isn't a constraint, neither of these is the best charger for your money — check our best Tesla home charger guide for stronger all-rounders. But within their respective niches, both are hard to beat. The GivEnergy does something almost no other charger can do at £478. The EO Mini Pro 3 fits where nothing else will, and does a respectable job once it's there.