Sorry that the charging cord isn't long enough for your store's needs.
We don't sell a longer one, but I have a workaround that might be helpful. You can substitute any standard Micro-USB to USB cable for the one that we provide. (You'll find these cables at retail stores like Best Buy and Staples or online.) Although we don't officially support extension cables, you can purchase a USB extension like this one (again, we don't officially support these third-party products) and extend your cable that way.
Hope that helps!
