{
  "checked": "2026-10-30",
  "method": "Public specifications and regulator statistics only. No Tend customer telemetry or hardware measurements. Headline battery capacity is kept separate from actual-rating footnotes; adapters are included/listed adapters unless explicitly labelled recommended minimum.",
  "models": [
    {"model":"MacBook Air M1 (2020)","family":"Air","wh":49.9,"adapter":"30 W","source":"https://support.apple.com/en-gb/111883"},
    {"model":"MacBook Air 13-inch M2 (2022)","family":"Air","wh":52.6,"adapter":"30 W or 35 W; configuration-dependent","source":"https://support.apple.com/en-am/111867"},
    {"model":"MacBook Air 15-inch M2 (2023)","family":"Air","wh":66.5,"adapter":"35 W","source":"https://support.apple.com/en-my/111346"},
    {"model":"MacBook Air 13-inch M3 (2024)","family":"Air","wh":52.6,"adapter":"30 W or 35 W; configuration-dependent","source":"https://support.apple.com/en-in/118551"},
    {"model":"MacBook Air 15-inch M3 (2024)","family":"Air","wh":66.5,"adapter":"35 W","source":"https://support.apple.com/en-za/118552"},
    {"model":"MacBook Air 13-inch M4 (2025)","family":"Air","wh":53.8,"adapter":"30 W or 35 W; configuration-dependent","source":"https://support.apple.com/en-ae/122209"},
    {"model":"MacBook Air 15-inch M4 (2025)","family":"Air","wh":66.5,"adapter":"35 W","source":"https://support.apple.com/en-in/122210"},
    {"model":"MacBook Air 13-inch M5 (2026)","family":"Air","wh":53.8,"adapter":"40 W Dynamic with 60 W Max; current US specs","source":"https://www.apple.com/macbook-air/specs/"},
    {"model":"MacBook Air 15-inch M5 (2026)","family":"Air","wh":66.5,"adapter":"40 W Dynamic with 60 W Max; current US specs","source":"https://www.apple.com/macbook-air/specs/"},
    {"model":"MacBook Pro 13-inch M1 (2020)","family":"Pro","wh":58.2,"adapter":"61 W","source":"https://support.apple.com/en-ae/111893"},
    {"model":"MacBook Pro 14-inch M1 Pro / Max (2021)","family":"Pro","wh":70,"footnote_wh":69.6,"adapter":"67 W (8-core CPU); 96 W (10-core or Max)","source":"https://support.apple.com/en-us/111902"},
    {"model":"MacBook Pro 16-inch M1 Pro / Max (2021)","family":"Pro","wh":100,"footnote_wh":99.6,"adapter":"140 W","source":"https://support.apple.com/en-gb/111901"},
    {"model":"MacBook Pro 13-inch M2 (2022)","family":"Pro","wh":58.2,"adapter":"67 W","source":"https://support.apple.com/en-in/111869"},
    {"model":"MacBook Pro 14-inch M2 Pro / Max (2023)","family":"Pro","wh":70,"footnote_wh":69.6,"adapter":"67 W (10-core CPU); 96 W (12-core or Max)","source":"https://support.apple.com/en-in/111340"},
    {"model":"MacBook Pro 16-inch M2 Pro / Max (2023)","family":"Pro","wh":100,"footnote_wh":99.6,"adapter":"140 W","source":"https://support.apple.com/en-us/111838"},
    {"model":"MacBook Pro 14-inch M3 (Nov 2023)","family":"Pro","wh":70,"footnote_wh":69.6,"adapter":"70 W","source":"https://support.apple.com/en-gb/117735"},
    {"model":"MacBook Pro 14-inch M3 Pro / Max (Nov 2023)","family":"Pro","wh":72.4,"footnote_wh":69.6,"note":"Apple's headline and shared footnote disagree; both transcribed, not reconciled by inference.","adapter":"70 W (11-core Pro); 96 W (12-core Pro or Max)","source":"https://support.apple.com/en-us/117736"},
    {"model":"MacBook Pro 16-inch M3 Pro / Max (Nov 2023)","family":"Pro","wh":100,"footnote_wh":99.6,"adapter":"140 W","source":"https://support.apple.com/en-gu/117737"},
    {"model":"MacBook Pro 14-inch M4 (2024)","family":"Pro","wh":72.4,"adapter":"70 W","source":"https://support.apple.com/en-us/121552"},
    {"model":"MacBook Pro 14-inch M4 Pro / Max (2024)","family":"Pro","wh":72.4,"adapter":"70 W (12-core Pro); 96 W (14-core Pro or Max)","source":"https://support.apple.com/en-us/121553"},
    {"model":"MacBook Pro 16-inch M4 Pro / Max (2024)","family":"Pro","wh":100,"footnote_wh":99.6,"adapter":"140 W","source":"https://support.apple.com/en-gb/121554"},
    {"model":"MacBook Pro 14-inch M5 (2025)","family":"Pro","wh":72.4,"adapter":"70 W","source":"https://support.apple.com/en-us/125405"},
    {"model":"MacBook Pro 14-inch M5 Pro / Max (2026)","family":"Pro","wh":72.4,"adapter":"70 W (15-core Pro); 96 W (18-core Pro or Max)","source":"https://support.apple.com/en-us/126318"},
    {"model":"MacBook Pro 16-inch M5 Pro / Max (2026)","family":"Pro","wh":100,"footnote_wh":99.6,"adapter":"140 W","source":"https://support.apple.com/en-us/126319"},
    {"model":"MacBook Pro 14-inch M6 (2026)","family":"Pro","wh":72.4,"adapter":"70 W (US box); 60 W recommended minimum; fast charge with 96 W","source":"https://www.apple.com/macbook-pro/liquid-retina-xdr-display/specs/","note":"Present on commercial specs but not Apple's model catalogue or cycle-count table checked on the same date."},
    {"model":"MacBook Neo A18 Pro (2026)","family":"Neo","wh":36.5,"adapter":"20 W","source":"https://www.apple.com/macbook-neo/specs/"}
  ],
  "cost_assumptions": {"full_equivalent_charges_per_year":365,"efficiency":0.85,"efficiency_is":"Illustrative wall-to-battery assumption, not an Apple specification or measurement","capacities_wh":[53.8,72.4,99.6],"excluded":"Computer use during charging, displays, peripherals, standby energy, standing charges, tariff changes, battery wear"},
  "electricity_rates": [
    {"place":"United States","currency":"USD","symbol":"US$","rate_per_kwh":0.1816,"period":"August 2026 (single month)","basis":"EIA national residential revenue/sales average for one month; preliminary; not a marginal tariff or uniform national price","source":"https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_es1a"},
    {"place":"Great Britain","currency":"GBP","symbol":"£","rate_per_kwh":0.2632,"period":"October–December 2026","basis":"Ofgem average single-rate electricity cap for Direct Debit; England, Scotland, Wales; no electricity VAT in this period per source; standing charge excluded","source":"https://www.ofgem.gov.uk/your-energy-supply/your-energy-bill/energy-price-cap-unit-rates-and-standing-charges"},
    {"place":"Singapore","currency":"SGD","symbol":"S$","rate_per_kwh":0.3116,"period":"October–December 2026","basis":"EMA regulated tariff including GST (28.59 cents before GST); fixed retail contracts may differ","source":"https://www.ema.gov.sg/consumer-information/electricity/buying-electricity/buying-at-regulated-tariff","source_secondary":"https://www.spgroup.com.sg/our-services/utilities/tariff-information"},
    {"place":"Ireland","currency":"EUR","symbol":"€","rate_per_kwh":0.3871,"period":"January–June 2026","basis":"Eurostat household band 2,500–5,000 kWh/year; taxes, levies and VAT included; average not marginal tariff","source":"https://ec.europa.eu/eurostat/statistics-explained/index.php?title=Electricity_price_statistics"},
    {"place":"Germany","currency":"EUR","symbol":"€","rate_per_kwh":0.3618,"period":"January–June 2026","basis":"Eurostat household band 2,500–5,000 kWh/year; taxes, levies and VAT included; average not marginal tariff","source":"https://ec.europa.eu/eurostat/statistics-explained/index.php?title=Electricity_price_statistics"},
    {"place":"Belgium","currency":"EUR","symbol":"€","rate_per_kwh":0.3575,"period":"January–June 2026","basis":"Eurostat household band 2,500–5,000 kWh/year; taxes, levies and VAT included; average not marginal tariff","source":"https://ec.europa.eu/eurostat/statistics-explained/index.php?title=Electricity_price_statistics"},
    {"place":"Hungary","currency":"EUR","symbol":"€","rate_per_kwh":0.1139,"period":"January–June 2026","basis":"Eurostat household band 2,500–5,000 kWh/year; taxes, levies and VAT included; Eurostat euro-denominated statistic, not a forint conversion made by Tend","source":"https://ec.europa.eu/eurostat/statistics-explained/index.php?title=Electricity_price_statistics"},
    {"place":"Malta","currency":"EUR","symbol":"€","rate_per_kwh":0.1268,"period":"January–June 2026","basis":"Eurostat household band 2,500–5,000 kWh/year; taxes, levies and VAT included; average not marginal tariff","source":"https://ec.europa.eu/eurostat/statistics-explained/index.php?title=Electricity_price_statistics"},
    {"place":"Bulgaria","currency":"EUR","symbol":"€","rate_per_kwh":0.1341,"period":"January–June 2026","basis":"Eurostat household band 2,500–5,000 kWh/year; taxes, levies and VAT included; average not marginal tariff","source":"https://ec.europa.eu/eurostat/statistics-explained/index.php?title=Electricity_price_statistics"}
  ],
  "cycle_source":"https://support.apple.com/en-gw/102888",
  "cycle_groups":[
    {"family":"MacBook","limit":1000,"models":["Retina 12-inch 2017","Retina 12-inch Early 2016","Retina 12-inch Early 2015","13-inch Mid 2010","13-inch Late 2009"]},
    {"family":"MacBook","limit":500,"models":["13-inch Aluminum Late 2008"]},
    {"family":"MacBook","limit":300,"models":["Mid 2009","Early 2009","Late 2008","Early 2008","Late 2007","Mid 2007","Late 2006","13-inch (original)"]},
    {"family":"MacBook Neo","limit":1000,"models":["MacBook Neo"]},
    {"family":"MacBook Pro","limit":1000,"models":["14-inch M5 Pro or M5 Max","16-inch M5 Pro or M5 Max","14-inch M5","14-inch 2024","16-inch 2024","14-inch Nov 2023","16-inch Nov 2023","14-inch 2023","16-inch 2023","13-inch M2 2022","14-inch 2021","16-inch 2021","13-inch M1 2020","13-inch 2020 Two Thunderbolt 3 ports","13-inch 2020 Four Thunderbolt 3 ports","16-inch 2019","15-inch 2019","13-inch 2019 Four Thunderbolt 3 ports","13-inch 2019 Two Thunderbolt 3 ports","15-inch 2018","13-inch 2018 Four Thunderbolt 3 ports","15-inch 2017","13-inch 2017 Four Thunderbolt 3 ports","13-inch 2017 Two Thunderbolt 3 ports","15-inch 2016","13-inch 2016 Four Thunderbolt 3 ports","13-inch 2016 Two Thunderbolt 3 ports","Retina 13-inch Early 2015","Retina 13-inch Mid 2014","Retina 13-inch Late 2013","Retina 13-inch Early 2013","Retina 13-inch Late 2012","13-inch Mid 2012","13-inch Late 2011","13-inch Early 2011","13-inch Mid 2010","13-inch Mid 2009","Retina 15-inch Mid 2015","Retina 15-inch Mid 2014","Retina 15-inch Late 2013","Retina 15-inch Early 2013","Retina Mid 2012","15-inch Mid 2012","15-inch Late 2011","15-inch Early 2011","15-inch Mid 2010","15-inch 2.53 GHz Mid 2009","15-inch Mid 2009","17-inch Late 2011","17-inch Early 2011","17-inch Mid 2010","17-inch Mid 2009","17-inch Early 2009"]},
    {"family":"MacBook Pro","limit":500,"models":["15-inch Late 2008"]},
    {"family":"MacBook Pro","limit":300,"models":["15-inch Early 2008","15-inch 2.4/2.2 GHz","15-inch Core 2 Duo","15-inch Glossy","15-inch (original)","17-inch Late 2008","17-inch Early 2008","17-inch 2.4 GHz","17-inch Core 2 Duo","17-inch (original)"]},
    {"family":"MacBook Air","limit":1000,"models":["13-inch M5","15-inch M5","13-inch M4 2025","15-inch M4 2025","13-inch M3 2024","15-inch M3 2024","15-inch M2 2023","M2 2022","M1 2020","Retina 13-inch 2020","Retina 13-inch 2019","Retina 13-inch 2018","13-inch 2017","11-inch Early 2015","11-inch Early 2014","11-inch Mid 2013","11-inch Mid 2012","11-inch Mid 2011","11-inch Late 2010","13-inch Early 2015","13-inch Early 2014","13-inch Mid 2013","13-inch Mid 2012","13-inch Mid 2011","13-inch Late 2010"]},
    {"family":"MacBook Air","limit":500,"models":["Mid 2009"]},
    {"family":"MacBook Air","limit":300,"models":["Late 2008","MacBook Air (original)"]}
  ]
}