| CPC B65D 81/18 (2013.01) [H01G 9/08 (2013.01); H01M 50/20 (2021.01); B65D 2201/00 (2013.01)] | 20 Claims |

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1. An apparatus comprising:
a foil pack defining a device enclosure configured to enclose an energy storage device;
a fluid conduit defining a test port, defining a fluid channel opening which opens into the device enclosure, and defining a fluid channel which defines a flow path fluidically coupling the test port and the fluid channel opening; and
a scaffolding within the fluid channel configured to resist a collapse of the fluid channel when a vacuum is established in the fluid channel.
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