It appears to be a PW3624 with just a single out port. Not being familiar with the products I assumed they could be connected like the 3600 and a dual power bank. Since the old camera has AA batteries it looks like the best option will be to use the 6 d cell power bank and discard the 3501.
I’m curious why the PW003 has only a single output. Did Cuddeback determine that it was so powerful that there was little to be gained by using a power bank in addition to the panel? And are the batteries bypassed in the 3600 on the output to the power bank because the batteries in it don’t play nice with the rechargeable D cells in the dual power bank?
Sounds like the PW003 solar panel won’t work with the dual power banks. Found good deals for both on EBay. If I leave the rechargeable bank empty in the dual bank I’m guessing power won’t flow across it and the system would immediately start using the alkaline bank. Just trying to get maximum life for the home cell unit.