Tools / Air Compressors & Pneumatics
User Manual for Fieldmann FDUZ 79040 20V Battery
Quick guide for the Fieldmann FDUZ 79040 20V 4.0Ah Li-Ion battery. Learn about charging, safety, storage, and LED capacity indicators.
Quick answers from the manual
Quick answer
- The FDUZ 79040 is a 20V 4.0Ah Li-Ion battery. It should be charged and stored at temperatures between 10°C and 40°C. Use only Fieldmann chargers. p. 1, 6, 7
Key actions
- Charge the battery p. 6, 7
- Check battery level p. 7
First start
- Fully charge the battery before first use. p. 7
Problems and fixes
Battery LEDs blinking
Battery is too hot or too cold. Ensure temperature is between 10°C and 40°C.
p. 7Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Voltage | 20V | Nominal voltage | p. 9 |
| Capacity | 4.0Ah | Battery capacity | p. 9 |
Where to find it in the PDF
- Safety Instructions p. 6
- Charging and Capacity p. 7
Table of contents
Quick guide from the manual
The Fieldmann FDUZ 79040 is a 20V 4.0Ah Li-Ion battery designed for use with compatible Fieldmann tools. New batteries are shipped with a low charge and must be fully charged before the first use. Always use the original Fieldmann charger to ensure safety and performance.
Safety instructions
- Do not expose to rain or water.
- Do not burn.
- Do not open or puncture the battery pack.
- Avoid short circuits: Keep the battery away from metal objects like nails, screws, or keys.
- Temperature limits: Only charge and store the battery in temperatures between 50°F (10°C) and 104°F (40°C).
- Damaged batteries: Stop using the battery if it exhibits abnormal heat, odor, color, or deformation.
Charging and capacity
To check the remaining capacity, press the button on the battery. The LED indicators will display the status:
- All 4 LEDs lit: Battery is fully charged.
- 3 or 2 LEDs lit: Battery has adequate remaining charge.
- 1 LED blinks: Battery is empty; recharge the battery.
- All LEDs blink: Battery is too hot or too cold. Ensure the temperature is between 10°C and 40°C.
The most suitable temperature for charging is between 68°F (20°C) and 77°F (25°C).
Storage
Store the battery in a cool, dry place. Do not leave the battery in environments where temperatures can easily exceed the recommended limits, such as garden sheds or vehicles in direct sunlight, as this may cause fire or damage.
Disposal
This battery contains Li-ion cells. Do not dispose of it with household waste. Discharge the battery by operating the tool, remove it, and cover the terminals with heavy-duty adhesive tape to prevent short circuits. Recycle the battery at a designated local municipal collection point.
Manufacturer information
Fieldmann
Practical help
Common problems
Battery cuts out during use
The battery voltage is low; stop using the tool and recharge the battery.
All LEDs are blinking
The battery is too hot or too cold. Move it to an environment between 10°C and 40°C.
Before use
- Ensure the battery is not damaged or leaking.
- Check that the ambient temperature is between 10°C and 40°C.
- Fully charge the battery before the first use.
- Verify that the charger is a genuine Fieldmann product.
Images and diagrams
- The battery features a button and LED indicators to show the current charge level.
Model compatibility
- Use only with Fieldmann tools and chargers.
- Do not use the battery to power any device other than the Fieldmann tool it was sold with.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.