This 6 x AA (9V) plastic battery holder has a 2.1mm DC plug connector of 24cm long. With the sturdy housing, a battery can be easily clicked off and on without having to glue the battery to the project. https://elecena.pl/product/27739225/opencircuit-6-x-aa-battery-holder-dc-plug-9v 2025-01-23 https://elecena.pl/product/27739225/opencircuit-6-x-aa-battery-holder-dc-plug-9v 2026-02-20 https://elecena.pl/product/27739225/opencircuit-6-x-aa-battery-holder-dc-plug-9v 2026-04-11 https://elecena.pl/product/27739225/opencircuit-6-x-aa-battery-holder-dc-plug-9v 2026-04-25