{"chart":"mah-to-wh-chart","generatedFrom":"All Unit Conversions shared conversion library","tables":[{"title":"Phone cells and power banks: mAh to Wh","headers":["mAh","Wh at 3.6 V","Wh at 3.7 V","Wh at 3.85 V"],"rows":[["1,000","3.6","3.7","3.9"],["2,000","7.2","7.4","7.7"],["2,500","9.0","9.3","9.6"],["3,000","10.8","11.1","11.6"],["3,500","12.6","13.0","13.5"],["4,000","14.4","14.8","15.4"],["4,500","16.2","16.7","17.3"],["5,000","18.0","18.5","19.3"],["6,000","21.6","22.2","23.1"],["8,000","28.8","29.6","30.8"],["10,000","36.0","37.0","38.5"],["12,000","43.2","44.4","46.2"],["15,000","54.0","55.5","57.8"],["20,000","72.0","74.0","77.0"],["25,000","90.0","92.5","96.3"],["26,800","96.5","99.2","103.2"],["27,000","97.2","99.9","104.0"],["30,000","108.0","111.0","115.5"],["40,000","144.0","148.0","154.0"],["50,000","180.0","185.0","192.5"]]},{"title":"Airline category at 3.7 V","headers":["mAh at 3.7 V","Wh","Category"],"rows":[["10,000","37.0","Up to 100 Wh"],["20,000","74.0","Up to 100 Wh"],["25,000","92.5","Up to 100 Wh"],["26,800","99.2","Up to 100 Wh"],["27,000","99.9","Up to 100 Wh"],["30,000","111.0","100–160 Wh"],["40,000","148.0","100–160 Wh"],["43,000","159.1","100–160 Wh"],["45,000","166.5","Over 160 Wh"]]},{"title":"Battery packs: Ah to Wh","headers":["Ah","7.4 V","11.1 V","12 V","12.8 V","14.8 V","24 V","36 V","48 V"],"rows":[["1","7.4","11.1","12","12.8","14.8","24","36","48"],["2","14.8","22.2","24","25.6","29.6","48","72","96"],["2.5","18.5","27.8","30","32","37","60","90","120"],["3","22.2","33.3","36","38.4","44.4","72","108","144"],["4","29.6","44.4","48","51.2","59.2","96","144","192"],["5","37","55.5","60","64","74","120","180","240"],["6","44.4","66.6","72","76.8","88.8","144","216","288"],["7","51.8","77.7","84","89.6","103.6","168","252","336"],["9","66.6","99.9","108","115.2","133.2","216","324","432"],["10","74","111","120","128","148","240","360","480"],["12","88.8","133.2","144","153.6","177.6","288","432","576"],["18","133.2","199.8","216","230.4","266.4","432","648","864"],["20","148","222","240","256","296","480","720","960"],["35","259","388.5","420","448","518","840","1,260","1,680"],["50","370","555","600","640","740","1,200","1,800","2,400"],["100","740","1,110","1,200","1,280","1,480","2,400","3,600","4,800"],["200","1,480","2,220","2,400","2,560","2,960","4,800","7,200","9,600"]]},{"title":"Watt-hours to mAh","headers":["Wh","mAh at 3.6 V","mAh at 3.7 V","mAh at 3.85 V"],"rows":[["5","1,389","1,351","1,299"],["10","2,778","2,703","2,597"],["20","5,556","5,405","5,195"],["27","7,500","7,297","7,013"],["37","10,278","10,000","9,610"],["50","13,889","13,514","12,987"],["60","16,667","16,216","15,584"],["74","20,556","20,000","19,221"],["90","25,000","24,324","23,377"],["99","27,500","26,757","25,714"],["100","27,778","27,027","25,974"],["120","33,333","32,432","31,169"],["160","44,444","43,243","41,558"]]},{"title":"Lithium batteries in passenger baggage (ICAO and IATA, 2026)","headers":["Rating","Item","Carry-on","Checked","Airline approval"],"rows":[["Up to 100 Wh","In a device (phone, laptop, camera)","Yes","Yes, switched fully off","No"],["Up to 100 Wh","Spare battery","Yes, terminals protected","No","No"],["Up to 100 Wh","Power bank","Yes, at most 2 per person","No","No"],["100–160 Wh","In a device","Yes","Yes","Yes"],["100–160 Wh","Spare battery","Yes, at most 2","No","Yes"],["100–160 Wh","Power bank","Only with approval until 31 Dec 2026; not allowed from 1 Jan 2027","No","Yes"],["Over 160 Wh","Any","No: cargo only, under the Dangerous Goods Regulations","No","—"]]},{"title":"Useful battery formulas","headers":["To find","Formula","Example"],"rows":[["Watt-hours","Wh = mAh × V ÷ 1000","5,000 mAh × 3.85 V ÷ 1000 = 19.25 Wh"],["Milliamp-hours","mAh = Wh × 1000 ÷ V","99 Wh × 1000 ÷ 3.7 V = 26,757 mAh"],["Runtime","hours ≈ Wh × efficiency ÷ load (W)","100 Wh × 0.85 ÷ 20 W = 4.25 h"],["Power-bank output at 5 V","mAh(5 V) ≈ mAh × 3.7 ÷ 5 × efficiency","20,000 mAh × 3.7 ÷ 5 × 0.85 = 12,580 mAh"],["Charge time","hours ≈ Ah ÷ charge current (A) × 1.2","5 Ah ÷ 2 A × 1.2 = 3 h"]]}]}