![help me understand the difference between capacity of 30k maH and rated capacity of 18k maH. does that mean I'll always have 12k maH of unused power in the battery or can help me understand the difference between capacity of 30k maH and rated capacity of 18k maH. does that mean I'll always have 12k maH of unused power in the battery or can](https://i.redd.it/w0766bjg5p691.jpg)
help me understand the difference between capacity of 30k maH and rated capacity of 18k maH. does that mean I'll always have 12k maH of unused power in the battery or can
How exactly do I calculate the Wh for a portable charger? I'm planning to get one, however I'm not sure if it's allowed in an aircraft. - Quora
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