For users of FIELDMANN 20V tools, this 4 Ah Li-ion battery provides the necessary runtime to tackle tasks without interruption. Compatible with the entire FAST POWER 20V range, it integrates seamlessly into an existing collection of tools. Its triple protection against overheating, overloading, and deep discharge preserves cell lifespan, while the five-level LED indicator (0%, 25%, 50%, 75%, 100%) allows for monitoring the charge level at a glance. Weighing 796 g, it remains easy to handle even during long DIY sessions.