in numerical sequence the following new heading: 9902.30.96 12 V Lead-acid storage batteries, of a kind used for the source of power for wheelchairs and mobility scooters of subheading 8713.90.00 (provided for in subheading 8507.20.80) 3.1% No change No change On or before 12/31/2024 . 5190. 12 V lead-acid storage batteries, rated at less than 15 ampere-hours Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.30.97 12 V Lead-acid storage batteries, with a maximum length of 20 cm, maximum width of 10 cm and maximum height of 10 cm, rated at less than 15 ampere-hours, of a kind used for the source of power for medical devices (provided for in subheading 8507.20.80) 3% No change No change On or before 12/31/2024 . 5191. 12 V lead-acid storage batteries, rated at 15 ampere-hours or more Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.30.98 12 V Lead-acid storage batteries, with a maximum length of 35 cm, maximum width of 18 cm and maximum height of 25 cm, rated at 15 ampere-hours or more, of a kind used for the source of power for medical devices (provided for in subheading 8507.20.80) 3.1% No change No change On or before 12/31/2024 . 5192. Cell box assemblies, weighing 15 kg or more but not over 18 kg Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.30.99 Lithium-ion battery cell boxes having aluminum cases, of a kind used for electrically powered motorcycles of heading 8711, containing numerous individual lithium-ion battery cells, such cell boxes having a minimum specific energy density of 175 watt-hour per kg, a minimum volumetric specific energy of 380 watt-hour per liter and weighing 15 kg or more but not over 18 kg (provided for in subheading 8507.60.00) Free No change No change On or before 12/31/2024 . 5193. Cell box assemblies, weighing 30 kg or more but not over 36 kg Subchapter II of chapter 99 is amended by inserting in numerical