| 摘要 |
A manual dynamo recharging device including a roller disposed in a housing and arranged for manually pressing and rolling against a surface, a dynamo connected to the roller, wherein rotation of the roller operates the dynamo to create electricity, and a rechargeable battery electrically connected to the dynamo through electrical circuitry, wherein manually pressing and rolling the roller against the surface operates the dynamo to create electricity to recharge the rechargeable battery, which is electrically connected to an electric portable device battery.
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