BYD Dolphin G DM-i battery, range and efficiency
7.42 kWh vs 18.3 kWh battery, EV range, combined range and warranty context.
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What is confirmed
Active uses a 7.42 kWh LFP Blade Battery with about 40 km / 24.8 miles WLTP EV range in official UK data. Boost, Comfort and Sport use an 18.3 kWh battery with up to 105 km / 65 miles WLTP EV range and up to 646 miles combined range in UK figures.
Scope and safety boundaries
Battery facts are trim and market dependent. HV battery inspection, coolant, thermal management and warranty claims are not DIY topics.
| Topic | Status |
|---|---|
| Official BYD model/spec facts | Published with citations |
| Manual text / warning icons / DTC | Review only until official manual extraction |
| Maintenance intervals | Requires VIN/manual/service confirmation |
Check market, trim, battery, software, VIN and official BYD/dealer confirmation. Safety-critical topics stay service-only.
Frequently asked questions
Is this page official BYD content?
No. It is an AutoTechHelp source-backed owner help page. Official BYD sources are cited at the bottom.
Does this apply to Dolphin EV or Dolphin Surf?
No. BYD Dolphin G DM-i is kept separate from Dolphin EV and Dolphin Surf unless an official source confirms overlap.
Where is the official owner manual?
BYD UK lists Dolphin G DM-i in the owner-manual selector, but the direct manual PDF/HTML still needs extraction or admin upload.
Are DTC codes published for this model?
No. Model-specific DTC pages are blocked until an official diagnostic or service source confirms exact codes.
Can I use this for an imported car?
Use it as a source map only. Confirm market, VIN, trim, battery, software and dealer support before applying a fact.
Are maintenance intervals confirmed?
Not as a full Dolphin G DM-i schedule in this rollout. Service topics are stored as confirmation-required until direct manual/service data is available.
Which trims have the larger battery?
Official UK specs list the 18.3 kWh battery on Boost, Comfort and Sport; Active is listed with 7.42 kWh.
Which trims have DC charging and V2L?
Official UK specs list DC charging and 3.3 kW V2L on Boost, Comfort and Sport, not Active.
Is this a repair guide?
No. HV battery, hybrid, fuel, brake, steering, airbag, ADAS, ECU, wiring and charging repair work is excluded.
How often are sources checked?
The seed stores checked dates and review tasks; dynamic pages and manuals should be rechecked as BYD publishes more assets.
Sources for this guide
This guide is for informational purposes only. Always consult an authorised service centre for safety-critical repairs. AutoTechHelp is not liable for any damage resulting from the use of this information.