7kW Single-Phase vs 11kW/22kW Three-Phase Home Wallbox Installation Guide for BYD Owners
-
Before paying for a 22kW 3-phase home charger, check your specific BYD model's On-Board AC Charger (OBC) rating:
On-Road Impressions, Efficiency & Setup Details
- BYD Atto 3, Seal, Sealion 6 & Shark 6 (Standard RHD): 7 kW Single-Phase AC (32A) -> Adds ~11–12% SOC per hour.
- BYD Seal, Dolphin Design & Sealion 7 (UK/EU 3-Phase Builds): 11 kW Three-Phase AC (16A per phase) -> Full charge in ~6.5 hours.
For 95% of households, a 7.4 kW smart solar-aware wallbox (Zappi, Fronius Wattpilot, Evnex, or Tesla Gen 3 Wall Connector) easily fills the battery from 20% to 100% during a 6-hour overnight off-peak window!
-
-
Before paying for a 22kW 3-phase home charger, check your specific BYD model's On-Board AC Charger (OBC) rating:
On-Road Impressions, Efficiency & Setup Details
- BYD Atto 3, Seal, Sealion 6 & Shark 6 (Standard RHD): 7 kW Single-Phase AC (32A) -> Adds ~11–12% SOC per hour.
- BYD Seal, Dolphin Design & Sealion 7 (UK/EU 3-Phase Builds): 11 kW Three-Phase AC (16A per phase) -> Full charge in ~6.5 hours.
For 95% of households, a 7.4 kW smart solar-aware wallbox (Zappi, Fronius Wattpilot, Evnex, or Tesla Gen 3 Wall Connector) easily fills the battery from 20% to 100% during a 6-hour overnight off-peak window!
-
Great summary! Even on a 3-phase house in Australia, if the car has a 7kW single-phase OBC, a 22kW charger will only supply 7.4kW (32A) on Phase 1.
@Rhys_N_EV Installed a myenergi Zappi 7kW tethered Type 2 charger—Eco+ mode automatically dumps 100% of our spare rooftop solar into the Atto 3.
-
@Rhys_N_EV Installed a myenergi Zappi 7kW tethered Type 2 charger—Eco+ mode automatically dumps 100% of our spare rooftop solar into the Atto 3.
@Connor_M_Seal Don't forget to use a Type A RCD + 6mA DC protection (or dedicated EV RCBO) at the switchboard!
-
-
Appreciate the honest perspective! Every EV and PHEV platform has trade-offs, and seeing real long-term feedback like this is why independent owner forums are way more useful than brochure numbers.
Hello! It looks like you're interested in this conversation, but you don't have an account yet.
Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.
With your input, this post could be even better 💗
Register Login