Battery and Charger Fieldmann FDUZ 79020 — Li‑Ion 2 Ah, cordless tool battery

Fieldmann FDUZ 79020 is a Li‑Ion 2 Ah replacement battery with an integrated charger designed for cordless handheld power tools in the FAST POWER 20V battery series. The battery delivers portable, steady power for general DIY and light professional tasks. It combines a compact, lightweight design with balanced performance over the full life cycle and offers protection features that maintain reliability during prolonged use and storage.

Advantages

The Li‑Ion chemistry provides minimal memory effect, low self-discharge and consistent output from near‑full charge down to low charge levels, allowing uninterrupted work and convenient recharging at any time. Built‑in protections guard against overload, overheating and deep discharge to extend service life. The battery’s lightweight construction and integrated charging function simplify replacement and reduce downtime when used with compatible FAST POWER 20V tools.

Suitable for

• General household repairs and DIY projects
• Garden maintenance with cordless garden tools from the same 20V series
• Light workshop tasks such as drilling, screwing and sanding
• Portable use where compact, replaceable power sources are required

Key specifications

• Battery chemistry: Lithium‑Ion (Li‑Ion)
• Nominal capacity: 2 Ah
• Nominal voltage: 20 V (for FAST POWER 20V series compatibility)
• Integrated charging function for on‑battery recharging
• Protection features: overload, overheating and deep discharge protection
• Low self‑discharge and no memory effect
• Lightweight, compact form factor for handheld tools

How to use

Insert the battery into a compatible FAST POWER 20V cordless tool or place it on the integrated charger according to the tool and charger manufacturer’s instructions. Allow the battery to charge fully before first use for optimal initial performance. The battery may be recharged at any state of discharge thanks to the absence of memory effect. Observe the tool’s and battery’s indicator lights and charging guidelines to confirm completion of charging and to avoid prolonged exposure to high temperatures.

Usage recommendations

For longest service life, store the battery partially charged, avoid storing at extreme temperatures, and use the built‑in protections as intended by charging before deep discharge. Match the battery with compatible FAST POWER 20V tools and follow safety instructions for charging and operation provided by the tool manufacturer.