The Rothenberger 18V CAS Battery Packs are high-performance replacement or additional batteries designed for the Rothenberger cordless battery platform and all CAS 18V (Cordless Alliance System) tools. Choose the capacity that suits your workload—2.0Ah for a lighter, compact setup or 4.0Ah for extended runtime on demanding jobs.

Built with advanced Li-Ion technology and intelligent battery management, these packs deliver reliable power reserves for professional plumbing, heating, HVAC, and maintenance work. Patented AIR COOLED charging technology keeps the battery cooler during charging to protect cells and extend service life. Permanent electronic single-cell monitoring (ESCP) and a processor-controlled charging management system optimise every charge cycle, preventing memory effect and ensuring consistent performance over time.

A charge level indicator lets you check remaining power at a glance, and both batteries are suitable for long-term storage with almost no self-discharge, so they’re ready to go when you need them.

Choose your variant:

• 18V 2.0Ah CAS Battery – compact, lightweight, ideal for everyday tasks and reduced tool weight.

• 18V 4.0Ah CAS Battery (RO BP 18/4 – 1000001653) – longer runtime for heavier jobs and extended site use.

Key Features:

• • Compatible with all CAS 18V cordless machines

  • Replacement/additional battery options to maximise uptime

  • AIR COOLED charging for cooler, safer charging cycles

  • ESCP single-cell monitoring for longer battery life

  • Processor-controlled charging system with no memory effect

  • Charge indicator for quick power checks

  • Low self-discharge for storage over long periods