Can I use a longer cable to power the Joolca Pump? Last Updated: October 11, 2022 01:31 Yes. Get a 5.5*2.1mm DC to 5.5*2.1mm DC cable. Where 5.5mm is the outer diameter, and 2.1mm is the inner diameter. Was this article useful? No Yes 3 out of 6 found this helpful Our team appreciate your feedback! What exactly was the issue with the article? Article content isn't very clear Missing or broken links and/or images Article does not answer my question(s) Article content is outdated Other Please Choose atleast one option. Let us know what we can improve: Submit feedback If you'd like to submit a support request, please contact us here.