# Battery charger Fieldmann FDUZ 79100 20 V, 4000 Ah

**URL:** https://aio.lv/en/product--fieldmann-50004602--10501469
**Data updated:** 2026-03-07 15:20 (EET)
**Category:** Power tool batteries
**Manufacturer:** Fieldmann
**Manufacturer code:** 50004602
**EAN:** 8590669303953
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 16.99 €
**Prices and availability valid until:** 2026-07-06 23:59
**Price without VAT (21%):** 14.04 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--fieldmann-50004602--10501469

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 26.06.2026 | free |
| Pickup points | 01.07.2026 | 1.99 EUR |
| Courier delivery to door | 01.07.2026 | 4.99 EUR |

## Summary description

Fieldmann FDUZ 79100 battery charger for 20 V cordless tool batteries. Designed to charge 20 V batteries with a stated capacity of 4000 Ah. Provides a dedicated charging solution for compatible Fieldmann cordless tools, suitable for home DIY and light professional use when maintaining battery readiness and extending runtime.

## Long description

The Fieldmann FDUZ 79100 20 V, 4000 Ah battery charger is designed to recharge 20 V lithium-ion batteries from the FAST POWER 20V series. Built for compatibility with Fieldmann cordless tools, the charger provides electronic monitoring of battery state and a clear LED indicator that shows charging progress. The unit supports fast charging for smaller capacity batteries and offers a compact solution for maintaining battery readiness at home or on light professional jobs.
Advantages
The charger features electronic charge monitoring that senses battery state and prevents overcharging, while the LED indicator provides an immediate, easy-to-read status update. Its compact design allows simple placement in a workshop or garage, and compatibility with the FAST POWER 20V line means it can service multiple Fieldmann cordless tools. Fast-charge capability reduces downtime for tasks that require frequent battery swaps.
Suitable for
 Home DIY battery-powered tools from the FAST POWER 20V series
 Light professional or trade use where rapid battery turnaround is needed
 Workshops, garages, and storage areas where compact chargers are preferred
 Users who require clear LED indication of charging status
Key specifications
 Input voltage: compatible with standard household mains (check local mains requirements)
 Output voltage: 20 V nominal for FAST POWER 20V batteries
 Battery chemistry supported: lithium-ion
 Charging capacity reference: supports batteries specified at 4000 Ah (4.0 Ah) nominal capacity
 Fast charge capability: for example, a 2 Ah battery can be charged in approximately 60 minutes
 Charge status indication: multi-state LED indicator for simple monitoring
 Protection features: electronic monitoring to reduce risk of overcharge and overheating
How to use
Place the charger on a stable, dry surface and connect it to the mains supply. Insert the compatible 20 V battery into the charger until it locks into place. Observe the LED indicator to confirm charging has started and monitor until the indicator shows full charge. After charging completes, remove the battery by pressing the release latch and disconnect the charger from the mains if it will not be used for extended periods.
Usage recommendations
Use the charger only with compatible Fieldmann FAST POWER 20V lithium-ion batteries. Charge batteries in a well-ventilated, dry area away from flammable materials. Avoid leaving batteries on the charger for prolonged periods after they reach full charge. If the battery or charger shows signs of damage or unusual heat, stop charging and consult authorized service or the user manual.

## Specifications

| Feature | Value |
|---|---|
| Battery technology | Not applicable |
| Power supply type | AC |
| Number of batteries supported | 1 |
| Input voltage | 230 |
| Battery recharge time | 60 h |
| Product colour | Green, Black |
| Input frequency | 50 |
| Proper use | Drill, Sander, Rotary hammer, Power screwdriver, Power multi-tool |
| Recharge indicator | Yes |
| Battery voltage | 20 V |
| Battery LED indicator | Yes |
| Maximum charging time | 120 h |
| Power protection features | Overheating |
| Brand compatibility | Fieldmann |
| Compatible battery technologies | Lithium-Ion (Li-Ion) |
| Battery capacity | 4000 Ah |
| Product type | Battery charger |
| Charging voltage | 21 |
| Battery capacity (max) | 4000 Ah |
| Battery capacity (min) | 2000 Ah |
| Charging current | 2.4 A |
| Number of chargers | 1 |

## FAQ

### How much does the Battery charger Fieldmann FDUZ 79100 cost, and is it available for purchase?

The price is 16.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 39 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 26.06.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Fieldmann products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Fieldmann service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### Where can I download the instructions for Battery charger Fieldmann FDUZ 79100?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/10501469/64843373_large.webp