Except if the solar panel is completely shadowed, most of time the oximo solar io solar panel will get enough energy to recharge the battery (especially on 3 & 6Nm).
To be 100% sure of the performance of the system, use the Somfy Solar App available on the stores. To be 100% sure of the performance of the system, use the Somfy Solar App availble on the stores. This tool will give you a precise and customized diagnosis.