18V Battery Replacement 4000mAh Pack for Einhell TECS 18/165 TECN 18 Tools, Extended Runtime Power

Replacement battery pack, 4000mAh, compatible with Einhell 18V tool models TECN 18, TECS 18/150, TECS 18/165, TECS 18/89, TEDA 18/760, TEDY 18. Alternative part numbers covered: 45.114.36, 4511396, 4511437, 4511501, 4511502. Why this battery matters Restores tool runtime: The 4000mAh capacity provides extended operating time compared with lower capacity packs, letting you finish tasks without frequent battery swaps. Direct replacement fit: Designed to match the original pack form and connections for the listed Einhell models, so installation is straightforward and tools retain normal function. Consistent performance: Delivers steady power for demanding tasks, helping maintain cutting, drilling, and sanding performance across a work session. Key features and attributes Capacity: 4000mAh for longer run time between charges. Compatibility: Built for Einhell TECN 18, TECS 18/150, TECS 18/165, TECS 18/89, TEDA 18/760, TEDY 18 and associated part numbers 45.114.36, 4511396, 4511437, 4511501, 4511502. Function: Replacement battery pack to restore mobility and runtime of cordless tools without modifying the tool. Fit and installation: Same connector layout and physical form as the original pack to ensure easy swapin replacement. How it solves common problems Replaces worn out or dead battery packs to avoid downtime on renovation or jobs. Extends usable runtime for midlength projects where a higher capacity pack reduces interruptions. Provides a simple field replacement option when original packs are unavailable or degraded. Practical use scenarios Home renovation: a depleted battery in a circular saw TECS 18/165 to finish cutting decking boards without pausing to recharge. Workshop and assembly: Swap into a drill TEDY 18 for extended screwdriving and drilling during furniture assembly or fixture installation. Surface work and finishing: Use with a sander TEDA 18/760 for uninterrupted sanding sessions when smoothing doors, trim, or small panels. Fitment reminder Confirm model and part number compatibility before to ensure correct fit and electrical matching for your specific tool. Contents One 4000mAh replacement battery pack compatible with the listed Einhell models and part numbers. This replacement battery is intended as a directfit power source to restore the runtime and usability of the specified cordless tools.