Quick Takeaways
  • Two new Seal DM-i variants now offer EV-like daily driving thanks to a much larger Blade Battery.
  • BYD is using large-battery PHEVs to close the gap between hybrids and full electric cars.
BYD Seal DM-i Long-Range variants were officially introduced for the Seal 05 and Seal 06 hybrid sedans, expanding BYD’s Ocean-series portfolio. The update mirrors the earlier long-range upgrades made to the Qin lineup and reinforces BYD’s strategy of pushing extended electric driving capability across its core plug-in hybrid models.
The two newly updated vehicles, the Seal 05 DM-i and Seal 06 DM-i, are now positioned to deliver significantly longer electric-only operation. Both sedans are designed to support drivers who want to maximize zero-emission driving without compromising the flexibility of a hybrid powertrain.
BYD Seal DM-i Long-Range Delivers 210 km Electric Range
With the latest update, each BYD Seal DM-i Long-Range model achieves a certified CLTC electric driving range of 210 kilometers. This places the Seal hybrids on par with the recently enhanced Qin DM-i variants and gives BYD one of the longest-range PHEV offerings in its segment.
The extended range makes daily commuting and short-to-medium city driving possible on electric power alone, reducing fuel consumption and operating costs while supporting lower tailpipe emissions.
High-Capacity Blade Battery Powers BYD Seal DM-i Long-Range
The extended electric capability comes from BYD’s proprietary Blade Battery technology. Both Seal DM-i long-range versions are equipped with a 25.28 kWh high-capacity Blade Battery pack, which is twice the size of the batteries used in comparable hybrid variants within the lineup.
  • 25.28 kWh Blade Battery for extended electric driving
  • Higher energy density without increasing vehicle size
  • Improved safety and thermal stability through BYD’s cell-to-pack design

This larger battery enables the Seal 05 and Seal 06 to operate like electric vehicles for most daily journeys while still retaining the backup of a combustion engine for longer trips.
Four Large-Battery PHEVs Expand BYD’s Hybrid Portfolio
The Seal DM-i long-range models join the Qin DM-i long-range variants, creating a family of four large-battery plug-in hybrid electric vehicles. Together, these models underline BYD’s push toward electrification using scalable battery-electric and hybrid technologies.
By doubling battery capacity compared with standard versions, BYD is narrowing the gap between full electric vehicles and plug-in hybrids, offering customers a more practical transition path toward fully electric mobility.
As BYD continues rolling out long-range upgrades across multiple product lines, the BYD Seal DM-i Long-Range series is set to play a central role in delivering longer electric driving, lower fuel dependency, and higher overall efficiency for hybrid sedan buyers.
Company Press Release

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