I have an anker powerhouse a1701, trying to charge it from a solar panel

is there a mc4 to 16.8v cable

did you try searching? Some obvious tips if you do.

https://community.anker.com/search?q=powerhouse%20solar

of course i tried searching. So did you have an answer

Any (12V-28V) solar charger with DC 7909 Male connector can charge the Powerhouse II.

Edit: scratch that I just realized you have the original powerhouse. Not sure the connector size or cord required for that one. As far as I know anker never made their own solar connector available for these

You can Google: mc4 to 16.8v cable and see what comes up

Actually it is not DC7909, rather it is 7.5 mm x 5 mm x 0.6 mm (pin) the same as Dell/HP notebook charger socket.

IMG_1092

Pictured is original Anker 521 Powerhouse 65 W AC charging adapter next to HP notebook 65w charging adapter. The plug are pictured opposing each other. By visual observation the Anker plug is shorter and wider than the HP. I do not have a dial caliper with me, other wise I would provide measurements, but they are not the same size