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BQ25505 Supercap Charging

Paul Joseph
Expert 2795 points
Other Parts Discussed in Thread: BQ25505

.       Is there any limitation on what size solar panel we can use to charge the supercap? Could it support 1W.

  1. We are still working on the ultracap configuration. At this point, it seems like it would be a 2S3P to give an equivalent capacitance of 160F to 200F, [5.4V].
    1. Would there be any concern on charging this size cap with BQ25505?
    2. We are thinking about providing a auxiliary power source to charge the ultra-caps, using a USB port. Can we “OR” the USB 5V with the solar panel?