WattCalc LAB

Sources and reference scope

Direct references with explicit limits on what they support.

Content reviewed 15 October 2026

EIA: measuring electricity

EIA: measuring electricity — Power and energy units only; not equipment performance.

Schneider Electric: apparent power

Schneider Electric: apparent power — Single-phase and balanced three-phase relationships.

European Commission JRC: PVGIS

European Commission JRC: PVGIS — Location-specific PV estimates; not a tariff or payback guarantee.

European Commission: heat pumps

European Commission: heat pumps — Technology background; not the seasonal efficiency of your installation.

Hyundai: original IONIQ 5 announcement

Hyundai: original IONIQ 5 announcement — Historical V2L example; not verification of the vehicle catalogue.

What was checked

These five pages were read on 21 September 2026 for the stated reference topics. No source is treated as certification of the site. Each calculator publishes its own equation, hypothetical scenarios and limitations.

Vehicle data boundaries

Only individually source-backed fields are filled. If usable capacity is not established, enter it manually for your exact vehicle. Gross pack labels are not usable energy. Saved inputs are your own editable assumptions.

Catalogue and sources

41 source-backed usable capacities; 57 require manual capacity. No unsupported capacity estimate is filled. No whole vehicle record is fully verified. Source scope and market must be checked for your vehicle.

98 / 98

Catalogue and sources · 98
Vehicle versionSource-backed usable capacityManual capacity requiredField-specific references
Hyundai IONIQ 5 · 2022 · 72.6 kWh AWD—Manual capacity required
output: 3.6 kW

Source scope (original documentation / English notes)

Original IONIQ 5 launch specification, up to 3.6 kW V2L. Availability and output vary by market and equipment.

Manufacturer source
Hyundai IONIQ 5 · 2023 · 77.4 kWh AWD—Manual capacity required
Hyundai IONIQ 5 · 2025 · 84 kWh AWD—Manual capacity required
Hyundai IONIQ 6 · 2023 · 77.4 kWh RWD—Manual capacity required
Kia EV6 · 2022 · 77.4 kWh AWD—Manual capacity required
Kia EV6 · 2025 · 84 kWh AWD—Manual capacity required
Kia Niro EV · 2023 · 64.8 kWh FWD—Manual capacity required
Tesla Model 3 · 2024 · Long Range AWD—Manual capacity required
Tesla Model Y · 2023 · Long Range AWD—Manual capacity required
Volkswagen ID.3 · 2024 · Pro S 77 kWh (05/2024–)77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

Volkswagen Media Information 49/2024, 2 May 2024, page 1: updated five-seat ID.3 Pro S, 77 kWh explicitly net. Selection is narrowed to the May 2024 update. Other vehicle and charger limits remain manual.

Manufacturer source
Volkswagen ID.4 · 2022 · Pro 77 kWh77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

European first-generation ID.3/ID.4 battery option; net energy. Source published 10 May 2021, not a VIN-specific certificate.

Original reference currently unavailable (checked 16 October 2026). Historical evidence is retained; confirm the specification against your vehicle documents.

Volkswagen ID.4 · 2024 · Pro 77 kWh77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

10 October 2023 European ID.4 update: Pro, Pro 4MOTION and GTX use the new 77 kWh net pack. Pure retains its 52 kWh pack and unchanged drive; net basis also established by the 2021 ID battery-system release.

Manufacturer source
Škoda Enyaq · 2024 · 85 77 kWh RWD77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

26 February 2024 European Enyaq 85/85x/RS and Coupé specification: 82 gross, 77 net. Equipment and battery configuration may differ.

Manufacturer source
Škoda Enyaq Coupé · 2024 · 85 77 kWh RWD77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

26 February 2024 European Enyaq 85/85x/RS and Coupé specification: 82 gross, 77 net. Equipment and battery configuration may differ.

Manufacturer source
Renault Zoe · 2021 · ZE50 R135—Manual capacity required
Renault Megane E-Tech · 2023 · EV60 220 hp60 kWh—
Usable battery: 60 kWh

Source scope (original documentation / English notes)

Renault Ireland launch brochure, page 4: EV60 220 hp Optimum Charge, usable capacity 60 kWh. Battery-family evidence; publication date and exact 2023 VIN are not established. Only usable capacity is transferred; charger options and equipment remain manual.

Manufacturer source
Nissan Leaf · 2021 · 40 kWh—Manual capacity required
Nissan Ariya · 2023 · 87 kWh e-4ORCE87 kWh—
Usable battery: 87 kWh

Source scope (original documentation / English notes)

Nissan pre-facelift ARIYA 63/87 kWh battery family comparison: usable/total capacity 63/65 and 87/90 kWh respectively. Public family reference, not a dated 2023 VIN specification; verify the installed pack. No market-specific AC limit is inferred.

Manufacturer source
MG MG4 Electric · 2023 · Long Range 64 kWh—Manual capacity required
output: 2.2 kW

Source scope (original documentation / English notes)

September 2023 Italian MG4 brochure: V2L up to 2200 W. Requires compatible vehicle equipment and adapter; confirm the actual rating.

Manufacturer source
MG MG4 Electric · 2024 · Extended Range 77 kWh—Manual capacity required
output: 2.2 kW

Source scope (original documentation / English notes)

September 2023 Italian MG4 brochure: V2L up to 2200 W. Requires compatible vehicle equipment and adapter; confirm the actual rating.

Manufacturer source
Volvo EX30 · 2024 · Extended Range RWD64 kWh—
Usable battery: 64 kWh

Source scope (original documentation / English notes)

Volvo Cars EX30 MY24 EU metric specification, October 2023, published 6 December 2023. PDF page 1, BATTERY, explicitly separates nominal and usable energy. Single Motor E400V10: 49 usable; Extended Range E400V18 and Twin Motor Performance E400V12: 64 usable. Figures marked preliminary; confirm your vehicle documentation. Charger equipment and consumption are not inferred.

Manufacturer source
Volvo EX40 · 2025 · Single Motor Extended Range—Manual capacity required
BMW i4 · 2024 · eDrive40 (07/2024–)81.3 kWh—
Usable battery: 81.3 kWh

Source scope (original documentation / English notes)

BMW technical specifications, June 2024, valid from July 2024, page 3: net energy, ACEA markets. Selection is restricted to the updated July 2024 model; earlier 2024 cars require their own specifications.

Manufacturer source
BMW iX1 · 2024 · xDrive30—Manual capacity required
Audi Q4 e-tron · 2024 · 45 e-tron77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

Audi Denmark official release, 21 September 2023, model year 2024 produced from week 44. Technical table: Q4 45 e-tron and Q4 55 e-tron quattro, 77 kWh net / 82 gross. Danish-market scope; confirm exact vehicle. Does not cover Q4 40 e-tron or establish optional equipment.

Manufacturer source
Audi Q8 e-tron · 2024 · 55 quattro106 kWh—
Usable battery: 106 kWh

Source scope (original documentation / English notes)

Audi archived German-market Q8 e-tron specification, 19 December 2022, launch spring 2023: Q8 50 89 kWh net / 95 gross; Q8 55 106 net / 114 gross. Applies to Q8 generation, not the earlier e-tron. Optional AC charger is not inferred.

Manufacturer source
Mercedes-Benz EQA · 2024 · EQA 250+70.5 kWh—
Usable battery: 70.5 kWh

Source scope (original documentation / English notes)

Mercedes-Benz Poland, 9 October 2023, updated EQA family technical table: EQA 250 66.5, 250+ 70.5, 300 4MATIC 66.5 kWh usable. Applies to the facelift family sold for 2024; confirm installed version. Consumption and equipment limits remain manual.

Manufacturer source
Ford Mustang Mach-E · 2023 · Extended Range AWD—Manual capacity required
Peugeot e-208 · 2024 · 51 kWh · 156 hp FWD48.1 kWh—
Usable battery: 48.1 kWh

Source scope (original documentation / English notes)

Peugeot / Stellantis Turkey, 25 November 2023, announced Q1 2024 launch of facelift E-208 115 kW / 156 hp: 51 kWh gross, 48.1 kWh ready for use. Scope is the 51 kWh / 156 hp battery configuration, not the older 50 kWh / 136 hp. No optional AC charger limit is inferred.

Manufacturer source
Polestar Polestar 2 · 2024 · Long range Single motor—Manual capacity required
Hyundai IONIQ 5 · 2022 · 58 kWh RWD—Manual capacity required
output: 3.6 kW

Source scope (original documentation / English notes)

Original IONIQ 5 launch specification, up to 3.6 kW V2L. Availability and output vary by market and equipment.

Manufacturer source
Hyundai IONIQ 5 · 2022 · 58 kWh AWD—Manual capacity required
output: 3.6 kW

Source scope (original documentation / English notes)

Original IONIQ 5 launch specification, up to 3.6 kW V2L. Availability and output vary by market and equipment.

Manufacturer source
Hyundai IONIQ 5 · 2022 · 72.6 kWh RWD—Manual capacity required
output: 3.6 kW

Source scope (original documentation / English notes)

Original IONIQ 5 launch specification, up to 3.6 kW V2L. Availability and output vary by market and equipment.

Manufacturer source
Hyundai IONIQ 5 · 2023 · 58 kWh RWD—Manual capacity required
Hyundai IONIQ 5 · 2023 · 77.4 kWh RWD—Manual capacity required
Hyundai IONIQ 5 · 2025 · 63 kWh RWD—Manual capacity required
Hyundai IONIQ 5 · 2025 · 84 kWh RWD—Manual capacity required
Hyundai IONIQ 6 · 2023 · 53 kWh RWD—Manual capacity required
Hyundai IONIQ 6 · 2023 · 77.4 kWh AWD—Manual capacity required
Kia EV6 · 2022 · 58 kWh RWD—Manual capacity required
Kia EV6 · 2022 · 77.4 kWh RWD—Manual capacity required
Kia EV6 · 2022 · 77.4 kWh GT AWD—Manual capacity required
Kia EV6 · 2025 · 63 kWh RWD—Manual capacity required
Kia EV6 · 2025 · 84 kWh RWD—Manual capacity required
Kia Niro EV · 2022 · 64 kWh FWD—Manual capacity required
Tesla Model 3 · 2022 · Rear-Wheel Drive—Manual capacity required
Tesla Model 3 · 2022 · Long Range AWD—Manual capacity required
Tesla Model 3 · 2022 · Performance AWD—Manual capacity required
Tesla Model 3 · 2024 · Rear-Wheel Drive—Manual capacity required
Tesla Model 3 · 2024 · Performance AWD—Manual capacity required
Tesla Model Y · 2023 · Rear-Wheel Drive—Manual capacity required
Tesla Model Y · 2023 · Performance AWD—Manual capacity required
Tesla Model Y · 2025 · Long Range RWD—Manual capacity required
Volkswagen ID.3 · 2022 · Pure Performance 45 kWh45 kWh—
Usable battery: 45 kWh

Source scope (original documentation / English notes)

European first-generation ID.3/ID.4 battery option; net energy. Source published 10 May 2021, not a VIN-specific certificate.

Original reference currently unavailable (checked 16 October 2026). Historical evidence is retained; confirm the specification against your vehicle documents.

Volkswagen ID.3 · 2022 · Pro 58 kWh58 kWh—
Usable battery: 58 kWh

Source scope (original documentation / English notes)

European first-generation ID.3/ID.4 battery option; net energy. Source published 10 May 2021, not a VIN-specific certificate.

Original reference currently unavailable (checked 16 October 2026). Historical evidence is retained; confirm the specification against your vehicle documents.

Volkswagen ID.3 · 2022 · Pro S 77 kWh77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

European first-generation ID.3/ID.4 battery option; net energy. Source published 10 May 2021, not a VIN-specific certificate.

Original reference currently unavailable (checked 16 October 2026). Historical evidence is retained; confirm the specification against your vehicle documents.

Volkswagen ID.4 · 2022 · Pure 52 kWh RWD52 kWh—
Usable battery: 52 kWh

Source scope (original documentation / English notes)

European first-generation ID.3/ID.4 battery option; net energy. Source published 10 May 2021, not a VIN-specific certificate.

Original reference currently unavailable (checked 16 October 2026). Historical evidence is retained; confirm the specification against your vehicle documents.

Volkswagen ID.4 · 2022 · GTX 77 kWh AWD77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

European first-generation ID.3/ID.4 battery option; net energy. Source published 10 May 2021, not a VIN-specific certificate.

Original reference currently unavailable (checked 16 October 2026). Historical evidence is retained; confirm the specification against your vehicle documents.

Volkswagen ID.4 · 2024 · Pure 52 kWh RWD52 kWh—
Usable battery: 52 kWh

Source scope (original documentation / English notes)

10 October 2023 European ID.4 update: Pro, Pro 4MOTION and GTX use the new 77 kWh net pack. Pure retains its 52 kWh pack and unchanged drive; net basis also established by the 2021 ID battery-system release.

Manufacturer source
Usable battery: 52 kWh

Source scope (original documentation / English notes)

2021 ID.4 battery family reference establishes the 52 kWh usable-energy basis; continuity is checked against the October 2023 Pure specification.

Original reference currently unavailable (checked 16 October 2026). Historical evidence is retained; confirm the specification against your vehicle documents.

Volkswagen ID.4 · 2024 · Pro 4MOTION 77 kWh AWD77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

10 October 2023 European ID.4 update: Pro, Pro 4MOTION and GTX use the new 77 kWh net pack. Pure retains its 52 kWh pack and unchanged drive; net basis also established by the 2021 ID battery-system release.

Manufacturer source
Volkswagen ID.4 · 2024 · GTX 77 kWh AWD77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

10 October 2023 European ID.4 update: Pro, Pro 4MOTION and GTX use the new 77 kWh net pack. Pure retains its 52 kWh pack and unchanged drive; net basis also established by the 2021 ID battery-system release.

Manufacturer source
Škoda Enyaq · 2022 · iV 60 58 kWh RWD58 kWh—
Usable battery: 58 kWh

Source scope (original documentation / English notes)

Škoda 29 March 2021 launch specification of the original Enyaq iV 60/80/80x pack family: 58 or 77 kWh net. Family evidence, not a 2022 VIN certificate. Confirm the installed pack; later 60, 85 and facelift specifications are different.

Manufacturer source
Škoda Enyaq · 2022 · iV 80 77 kWh RWD77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

Škoda 29 March 2021 launch specification of the original Enyaq iV 60/80/80x pack family: 58 or 77 kWh net. Family evidence, not a 2022 VIN certificate. Confirm the installed pack; later 60, 85 and facelift specifications are different.

Manufacturer source
Škoda Enyaq · 2022 · iV 80x 77 kWh AWD77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

Škoda 29 March 2021 launch specification of the original Enyaq iV 60/80/80x pack family: 58 or 77 kWh net. Family evidence, not a 2022 VIN certificate. Confirm the installed pack; later 60, 85 and facelift specifications are different.

Manufacturer source
Škoda Enyaq · 2024 · 85x 77 kWh AWD77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

26 February 2024 European Enyaq 85/85x/RS and Coupé specification: 82 gross, 77 net. Equipment and battery configuration may differ.

Manufacturer source
Škoda Enyaq Coupé · 2024 · RS 77 kWh AWD77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

26 February 2024 European Enyaq 85/85x/RS and Coupé specification: 82 gross, 77 net. Equipment and battery configuration may differ.

Manufacturer source
Renault Megane E-Tech · 2023 · EV40 130 hp—Manual capacity required
Renault Scenic E-Tech · 2024 · 60 kWh 170 hp—Manual capacity required
Renault Scenic E-Tech · 2024 · 87 kWh 220 hp—Manual capacity required
Nissan Leaf · 2021 · e+ 62 kWh—Manual capacity required
Nissan Ariya · 2023 · 63 kWh FWD63 kWh—
Usable battery: 63 kWh

Source scope (original documentation / English notes)

Nissan pre-facelift ARIYA 63/87 kWh battery family comparison: usable/total capacity 63/65 and 87/90 kWh respectively. Public family reference, not a dated 2023 VIN specification; verify the installed pack. No market-specific AC limit is inferred.

Manufacturer source
Nissan Ariya · 2023 · 87 kWh FWD87 kWh—
Usable battery: 87 kWh

Source scope (original documentation / English notes)

Nissan pre-facelift ARIYA 63/87 kWh battery family comparison: usable/total capacity 63/65 and 87/90 kWh respectively. Public family reference, not a dated 2023 VIN specification; verify the installed pack. No market-specific AC limit is inferred.

Manufacturer source
MG MG4 Electric · 2023 · Standard Range 51 kWh RWD—Manual capacity required
output: 2.2 kW

Source scope (original documentation / English notes)

September 2023 Italian MG4 brochure: V2L up to 2200 W. Requires compatible vehicle equipment and adapter; confirm the actual rating.

Manufacturer source
MG MG4 Electric · 2024 · XPOWER 64 kWh AWD—Manual capacity required
output: 2.2 kW

Source scope (original documentation / English notes)

September 2023 Italian MG4 brochure: V2L up to 2200 W. Requires compatible vehicle equipment and adapter; confirm the actual rating.

Manufacturer source
Volvo EX30 · 2024 · Single Motor 51 kWh RWD49 kWh—
Usable battery: 49 kWh

Source scope (original documentation / English notes)

Volvo Cars EX30 MY24 EU metric specification, October 2023, published 6 December 2023. PDF page 1, BATTERY, explicitly separates nominal and usable energy. Single Motor E400V10: 49 usable; Extended Range E400V18 and Twin Motor Performance E400V12: 64 usable. Figures marked preliminary; confirm your vehicle documentation. Charger equipment and consumption are not inferred.

Manufacturer source
Volvo EX30 · 2024 · Twin Motor Performance AWD64 kWh—
Usable battery: 64 kWh

Source scope (original documentation / English notes)

Volvo Cars EX30 MY24 EU metric specification, October 2023, published 6 December 2023. PDF page 1, BATTERY, explicitly separates nominal and usable energy. Single Motor E400V10: 49 usable; Extended Range E400V18 and Twin Motor Performance E400V12: 64 usable. Figures marked preliminary; confirm your vehicle documentation. Charger equipment and consumption are not inferred.

Manufacturer source
Volvo EX40 · 2025 · Twin Motor Performance AWD—Manual capacity required
BMW i4 · 2024 · eDrive35 (07/2024–)67.1 kWh—
Usable battery: 67.1 kWh

Source scope (original documentation / English notes)

BMW technical specifications, June 2024, valid from July 2024, page 1: net energy, ACEA markets. Selection is restricted to the updated July 2024 model; earlier 2024 cars require their own specifications.

Manufacturer source
BMW i4 · 2024 · xDrive40 AWD (07/2024–)81.3 kWh—
Usable battery: 81.3 kWh

Source scope (original documentation / English notes)

BMW technical specifications, June 2024, valid from July 2024, page 5: net energy, ACEA markets. Selection is restricted to the updated July 2024 model; earlier 2024 cars require their own specifications.

Manufacturer source
BMW i4 · 2024 · M50 AWD (07/2024–)81.3 kWh—
Usable battery: 81.3 kWh

Source scope (original documentation / English notes)

BMW technical specifications, June 2024, valid from July 2024, page 7: net energy, ACEA markets. Selection is restricted to the updated July 2024 model; earlier 2024 cars require their own specifications.

Manufacturer source
BMW iX1 · 2024 · eDrive20 FWD64.78 kWh—
Usable battery: 64.78 kWh

Source scope (original documentation / English notes)

5 September 2023 launch release for iX1 eDrive20, production from November 2023: usable energy 64.78 kWh. Standard and optional AC chargers differ; charging limit remains manual.

Manufacturer source
Audi Q4 e-tron · 2024 · 40 e-tron 77 kWh RWD—Manual capacity required
Audi Q4 e-tron · 2024 · 55 e-tron quattro AWD77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

Audi Denmark official release, 21 September 2023, model year 2024 produced from week 44. Technical table: Q4 45 e-tron and Q4 55 e-tron quattro, 77 kWh net / 82 gross. Danish-market scope; confirm exact vehicle. Does not cover Q4 40 e-tron or establish optional equipment.

Manufacturer source
Audi Q8 e-tron · 2024 · 50 quattro 89 kWh AWD89 kWh—
Usable battery: 89 kWh

Source scope (original documentation / English notes)

Audi archived German-market Q8 e-tron specification, 19 December 2022, launch spring 2023: Q8 50 89 kWh net / 95 gross; Q8 55 106 net / 114 gross. Applies to Q8 generation, not the earlier e-tron. Optional AC charger is not inferred.

Manufacturer source
Mercedes-Benz EQA · 2024 · EQA 250 66.5 kWh FWD66.5 kWh—
Usable battery: 66.5 kWh

Source scope (original documentation / English notes)

Mercedes-Benz Poland, 9 October 2023, updated EQA family technical table: EQA 250 66.5, 250+ 70.5, 300 4MATIC 66.5 kWh usable. Applies to the facelift family sold for 2024; confirm installed version. Consumption and equipment limits remain manual.

Manufacturer source
Mercedes-Benz EQA · 2024 · EQA 300 4MATIC AWD66.5 kWh—
Usable battery: 66.5 kWh

Source scope (original documentation / English notes)

Mercedes-Benz Poland, 9 October 2023, updated EQA family technical table: EQA 250 66.5, 250+ 70.5, 300 4MATIC 66.5 kWh usable. Applies to the facelift family sold for 2024; confirm installed version. Consumption and equipment limits remain manual.

Manufacturer source
Ford Mustang Mach-E · 2023 · Standard Range RWD—Manual capacity required
Ford Mustang Mach-E · 2023 · Extended Range RWD—Manual capacity required
Ford Mustang Mach-E · 2023 · GT AWD—Manual capacity required
Peugeot e-208 · 2022 · 50 kWh 136 hp FWD—Manual capacity required
Peugeot e-2008 · 2024 · 54 kWh 156 hp FWD—Manual capacity required
Polestar Polestar 2 · 2024 · Standard range Single motor—Manual capacity required
Polestar Polestar 2 · 2024 · Long range Dual motor AWD—Manual capacity required
Dacia Spring · 2024 · 26.8 kWh FWD—Manual capacity required
Fiat 500e · 2023 · 42 kWh · 118 hp FWD37.3 kWh—
Usable battery: 37.3 kWh

Source scope (original documentation / English notes)

Fiat Poland price/specification document dated 21 June 2023, PDF page 12: 42 kWh FWD / 118 hp versions explicitly have 37.3 kWh usable capacity; separate 23.8 kWh / 95 hp columns have 21.3 kWh usable and are not this selection. Applies to the documented 2023 European battery configuration, not US 2024 cars. Consumption and equipment-dependent limits remain manual.

Manufacturer source
Cupra Born · 2023 · 58 kWh RWD58 kWh—
Usable battery: 58 kWh

Source scope (original documentation / English notes)

CUPRA Greece January 2023 technical specification, page 1: 58 kWh 204/231 hp columns explicitly list net/gross 58/62 kWh. Battery-family reference, not a VIN or battery-health check. Other specifications remain manual.

Manufacturer source
Cupra Born · 2024 · 77 kWh e-Boost RWD77 kWh—
Usable battery: 77 kWh

Source scope (original documentation / English notes)

CUPRA official MY24/25 brochure, printed October 2023, e-Boost 77 kWh family: technical table 77 (82); footnote explicitly identifies 82 as gross. Family scope; exact VIN and market equipment must be confirmed. This does not cover the later 79 kWh VZ battery.

Manufacturer source
Opel Corsa Electric · 2024 · 51 kWh FWD—Manual capacity required