# Festool BP 18 TBX 4 C-ASI 18V 4.0 Ah Tabless Battery

> Light 4.0 Ah tabless pack: full power at 600 g, with Bluetooth

- **Brand:** [Festool](https://tools-universe.superfast.shop/en/brands/festool.md)
- **Battery platform:** [Festool 18V](https://tools-universe.superfast.shop/en/battery-platforms/festool-18v.md)
- **Category:** [Batteries & chargers](https://tools-universe.superfast.shop/en/batteries-and-chargers.md) › Battery
- **Item no.:** 578745
- **ETIM class:** Battery for electric tools
- **Price from:** €114.88 excl. VAT (€139.00 incl. VAT)

## Summary

Festool's compact tabless battery: 4.0 Ah in 600 g, with tabless cells that deliver full current and stay cooler. Bluetooth starts a paired extractor and shows pack data in the Festool Work app.

## Why this one

- **600 g pack**: 4.0 Ah from tabless cells for full power in a light pack.
- **Fast recharge**: About 25 minutes on the SCA 16 AIRSTREAM charger.
- **Bluetooth**: Extractor auto-start and data in the app.
- **Fits the 18V range**: All Festool 18V tools except three Ergo sanders.

## The story

### Full power, less weight

The TBX 4 is the pack to put on drills, drivers, jigsaws and compact saws when weight and balance matter. Tabless cells have lower internal resistance, so they deliver high current without the voltage sag of older packs, stay usable in heat and cold, and can be recharged straight after use. On the AIRSTREAM SCA 16 charger it is ready again in about 25 minutes.

### Part of the system

It fits every Festool 18V tool except the ETSC 125, RTSC 400 and DTSC 400 sanders, which use the Ergo pack. Bluetooth starts a compatible CLEANTEC extractor when the tool starts, and the app shows charge, temperature and cycles. An LED gauge and a soft-touch frame that stops tools sliding on slopes are standard.

## Specifications

### Batteries & charging

| Specification | Value | ETIM |
|---|---|---|
| Kind | Battery pack |  |
| Capacity | 4 Ah | EF001985 |
| Cell technology | Li-ion, tabless cells | EF004351 |
| Charge indicator | Yes |  |
| Cooling fan | No |  |
| Fits platforms | Festool 18V |  |

### Power

| Specification | Value | ETIM |
|---|---|---|
| Power source | Cordless (battery) | EF000145 |
| Voltage | 18 V | EF000002 |
| Connectivity | Bluetooth, Festool Work app |  |

### Physical

| Specification | Value | ETIM |
|---|---|---|
| Weight | 0.6 kg | EF011121 |
| LED work light | No |  |
| Belt hook | No |  |

**Technology:** [Bluetooth / ASI auto-start](https://tools-universe.superfast.shop/en/technology/bluetooth-asi-auto-start.md)

## Choose a version

### Battery pack

- **Item no.:** 578745
- **Stock:** 5 in stock
- **Price:** €114.88 excl. VAT (€139.00 incl. VAT)

## Prices

Net prices exclude VAT; incl. VAT uses the market rate.

| Version | Item no. | EUR Net (excl. VAT) | EUR Incl. VAT 21 % | NOK Net (excl. VAT) | NOK Incl. VAT 25 % | SEK Net (excl. VAT) | SEK Incl. VAT 25 % |
|---|---|---|---|---|---|---|---|
| Battery pack | 578745 | €114.88 | €139.00 | NOK 1,359.20 | NOK 1,699.00 | SEK 1,279.20 | SEK 1,599.00 |

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Web page: https://tools-universe.superfast.shop/en/batteries-and-chargers/festool-bp-18-tbx-4-c-asi-18v-40-ah-tabless-battery
Markdown version of this page, for language models. Prices are net (excl. VAT) unless marked incl. VAT.