Best 7kW Home Smart Wallbox for Solar Divert & Off-Peak EV Tariffs (UK, AU & NZ): myenergi Zappi v2.1 vs Ohme Home Pro vs Evnex E2
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As an OZEV-approved EVSE installer in Yorkshire (and daily driver of a BYD Seal), I get asked every week which 7kW single-phase home charger pairs best with BYD's onboard AC charger. Here is my hands-on breakdown for UK, Australian, and New Zealand households:
1. myenergi Zappi GLO / v2.1 (7kW / 22kW) — King of Rooftop Solar Export Divert (AU & UK)
- Why it wins for Solar: Built-in CT clamp monitoring lets you run Eco+ mode, which waits until your rooftop solar export exceeds
1.4 kW (6A)and dynamically modulates charge speed to match passing clouds so you import zero grid power. - Built-in PEN Fault Protection & RCD: No separate earth rod needed in the UK.
2. Ohme Home Pro / Ohme ePod — Best for UK Octopus Intelligent Go & OVO Charge Anytime
- Why it wins for Smart Tariffs: Integrates via API directly with Octopus Intelligent Go (7p/kWh). Even though BYD doesn't expose a direct vehicle API to Octopus yet, Ohme acts as the smart device — you just tell the Ohme app "Add 55% to my BYD Seal by 7:00 AM" and Ohme unlocks extra 7p/kWh daytime and overnight slots automatically!
3. Evnex E2 / E2 Plus (7.4kW) — Best Made-in-NZ & Australian Heat-Rated Charger
- Designed and built in Christchurch NZ with tough UV-stabilised polycarbonate casing that laughs at 42°C Aussie sun, native solar diversion, and clean local support.
- Why it wins for Solar: Built-in CT clamp monitoring lets you run Eco+ mode, which waits until your rooftop solar export exceeds
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Can vouch for the myenergi Zappi v2.1 here in Melbourne! We have 10kW of panels on the roof, and from September through April our Atto 3 charges 100% off surplus solar in Eco+ mode without touching the grid.
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For anyone in the UK on Octopus Intelligent Go, getting an Ohme Home Pro is a complete no-brainer. You select your exact BYD model (Atto 3 / Dolphin / Seal / Seal U) in the Ohme app, plug in when you get home at 5 PM, and Octopus frequently gives you cheap 7p/kWh whole-house electricity slots from 8 PM onwards!
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One installer tip for Australian homes with 3-phase power: remember that the BYD Atto 3 (early MY22/23), Sealion 6, and Shark 6 have a 7kW single-phase onboard AC charger, whereas the BYD Seal, Sealion 7, and 2024+ Dolphin/Atto 3 in Europe/UK support 11kW 3-phase. Make sure your sparky balances the phases on your switchboard!
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