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Replacement battery Velux SSL solar roller shutter motor with plug 946933 https://www.meurer-shop.de/dachfenste... Replacement of the battery that is built into the motor in a Velux (SSL) solar roller shutter. Note: Only replacing the battery is only worthwhile if the roller shutter is no older than 7 - 8 years. In older solar roller shutters, the entire motor with solar panel should be replaced!