EINHELL TC-SR 18 Li BT-Solo 18V Power X-Change Cordless Bluetooth Speaker

The EINHELL TC-SR 18 Li BT-Solo 18V Power X-Change Cordless Bluetooth Speaker is a compact portable audio device designed for job sites and workshops. It runs on the cordless battery platform, so it can be used away from mains power. Sold as a bare unit, it comes without a battery or charger, and users must supply their own compatible power pack. A single built-in driver handles all audio output. The speaker is aimed at contractors and DIYers who need basic sound reproduction on site. It fits into an existing power-tool ecosystem, which avoids the need for duplicate equipment.

Wired and wireless inputs handle audio playback from external devices. A secondary port provides power output for connected electronics. The speaker has no built-in FM tuner, so audio comes from external sources only. Its compact size means it fits into tight workspaces or toolbags without taking up much room. Together, the connectivity options cover straightforward playback for most standard uses. The speaker is light enough to carry between work zones or outdoor project areas.

• 3 W RMS output delivers basic sound amplification for small-group listening
• 18V Power X-Change battery compatibility allows users to share power packs across multiple Einhell tools
• Bluetooth 5.0 maintains a stable wireless connection to mobile devices
• 3.5 mm AUX input offers a wired fallback for devices lacking wireless capability
• Micro-USB A port functions as a charging output to prevent phone battery drain
• 120 to 20,000 Hz frequency range covers the audible spectrum for clear speech and music
• 290 g weight keeps it light enough to carry during active tasks