The Fein adapter in the Brennenstuhl Multi Battery 18-V system is intended for use with the 18-V batteries in one of the Multi Battery LED worklights. Attach the adapter, plug in the appropriate battery and get started - the adapter can be inserted into the work spotlight at the Brennenstuhl interface in a matter of seconds. The Fein adapter also convinces with the following features: https://elecena.pl/product/24188739/1172640079-adapter-for-multi-battery-led-work-lights-fein 2023-09-17 https://elecena.pl/product/24188739/1172640079-adapter-for-multi-battery-led-work-lights-fein 2026-02-10