| CPC A24F 40/50 (2020.01) [A24F 40/90 (2020.01); H01M 4/5825 (2013.01); H01M 10/0525 (2013.01); H01M 10/42 (2013.01); H01M 10/44 (2013.01); H02J 7/345 (2013.01); A24F 40/10 (2020.01); A61M 11/042 (2014.02); A61M 15/06 (2013.01); H01M 2004/028 (2013.01); H01M 2220/30 (2013.01)] | 22 Claims |

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1. A control unit for an electronic vapor provision system, the control unit comprising:
a battery for providing electrical power to a heater and wherein an output voltage of the battery when 80% discharged by successive puffs of the electronic vapor provision system is no more than 0.25V below the output voltage of the battery when fully charged.
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