Electric cars
A larger usable battery gives you more range and, in most cases, lets you accept more charge per minute at a rapid charger. The key qualifier is usable kWh: manufacturers advertise a gross figure, but a buffer reserved at both ends of the pack typically reduces the driveable capacity by around 3-6%. Battery chemistry also changes how you live with the car day to day: LFP packs (used by BYD and some MG models) can be charged to 100% daily without degradation concerns, while NMC packs are best kept to around 80% for everyday use. These are the 10 EVs with the largest usable batteries on sale in the UK in 2026.
Every model that qualifies for this list, in alphabetical order. Tap any card for the full review and specs.
i4 eDrive40
BMW CCS
The 80.7kWh pack supports 205kW peak DC charging, a faster absolute charge rate than the Polestar 2 or Nissan Ariya despite a similar nominal capacity. Saloon form factor and grand-tourer refinement are unique on this list.
i4 M50
BMW CCS
Identical pack to the eDrive40 but dual-motor AWD pulls WLTP range down from 360 to 318 miles. Same battery, less range, substantially more performance; the M50 is the performance choice on this list.
Atto 3 Extended Range
BYD CCS
The only LFP pack on this list at this capacity. LFP chemistry means you can charge to 100% daily without the long-term degradation concerns of NMC rivals; a significant practical advantage for daily commuters.
EV9 Air RWD
Kia CCS
The entry EV9 has the smallest pack of the three EV9s on this list, but the RWD drivetrain extracts more WLTP miles per kWh than the AWD variants, making it the most efficient EV9 on this page.
EV9 Earth AWD
Kia CCS
The largest usable battery of any mainstream EV on sale in the UK at 100kWh, combined with a seven-seat SUV body and 3.6kW V2L. No other production car in the UK currently pairs this pack size with this level of practicality.
EV9 GT-Line S AWD
Kia CCS
Same 100kWh usable pack as the Earth with GT-Line S specification and sportier trim. The 800V architecture supports 233kW peak DC charging, so the larger battery does not translate into slower charging.
Ariya 87kWh e-4ORCE Evolve
Nissan CCS
Same 87kWh pack as the FWD Evolve with dual-motor AWD and V2L added. The AWD drivetrain costs around 34 WLTP miles versus the FWD variant; the trade-off is all-weather traction.
Ariya 87kWh Evolve
Nissan CCS
One of the few EVs in the UK that accepts 22kW three-phase AC charging; the 87kWh pack makes longer AC charge times less of a concern and extends real-world range between rapid stops.
Polestar 2 Long Range Dual Motor
Polestar CCS
Same 78kWh pack as the single-motor; adding a second motor for AWD costs around 37 miles of WLTP range. The choice between the two Polestar 2s comes down to drivetrain priority: maximum range or all-weather traction.
Polestar 2 Long Range Single Motor
Polestar CCS
Extracts 391 miles WLTP from 78kWh, the most efficient use of battery capacity on this list by WLTP miles per kWh. A relatively modest pack size delivering the highest official range of any model on this page.