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