T 15+3 Li - Screwdriver FESTOOL - Free user manual and instructions
Find the device manual for free T 15+3 Li FESTOOL in PDF.
| Brand | Festool |
| Model | T 15+3 Li |
| Product type | Cordless drill driver |
| Motor voltage | 14.4 – 15.6 V |
| No-load speed (1st gear) | 0 – 450 rpm |
| No-load speed (2nd gear) | 0 – 1500 rpm |
| Max. torque (soft screwing / wood) | 27 Nm |
| Max. torque (hard screwing / metal) | 40 Nm |
| Chuck clamping range | 1.5 – 13 mm |
| Tool holder in spindle | 1/4" (hex) |
| Weight (without battery) | 1.0 kg |
| Battery | Li-ion 14.4 V, 4.2 Ah |
| Charger | TCL 3, 220–240 V ~, 50/60 Hz |
| Charging time (4.2 Ah) – 80% | approx. 70 min |
| Charging time (4.2 Ah) – 100% | approx. 90 min |
| Main functions | Drilling, screwdriving, torque adjustment (0.5–8 Nm) |
| LED lighting | Integrated, turns on with the switch |
| Belt clip | Integrated |
| Acoustic signal | In case of overload, low battery or overheating |
| Automatic stop | When the set torque is reached |
| Maintenance | Clean the ventilation openings and contacts |
| Spare parts | Original Festool, available at www.festool.com/Service |
| Repairability | Authorized Festool service centers only |
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USER MANUAL T 15+3 Li FESTOOL
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Three black FESTOOL T15+3 power drillers with visible shafts and base plates (no text or symbols on the devices themselves)



3B





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Line drawing of a FESTOOL electric drill press with a screwdriver inserted (no text or symbols on the device itself)Original operating manual
1 Safety instructions
1.1 General safety instructions

WARNING! Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.
Save all warnings and instructions for future reference.
The term "power tool" in the warnings refers to your mains-operated (corded) power tool or battery-operated (cordless) power tool.
1.2 Machine-related safety instructions
- Hold power tool by insulated gripping surfaces, when performing an operation where the cutting accessory or fastener may contact hidden wiring. Cutting accessory or fasteners contacting a "live" wire may make exposed metal parts of the power tool "live" and could give the operator an electric shock.
- This charger can be used by children of 8 years and upwards and persons with impaired physical, sensory or mental abilities, or insufficient experience or knowledge, providing they are supervised or have been instructed in the proper use of the appliance and understand the risks involved. Children are not permitted to play with the appliance. Children must not carry out cleaning tasks or maintenance unless they are supervised.




- Wear suitable protection: such as ear protection, safety goggles, a dust mask for work which generates dust, and protective gloves when working with raw materials and when changing tools.

CAUTION! Rebound!
Rotation: Switch off device immediately!
- Do not lock the on/off switch permanently!
- Do not open the battery pack or the charger!
- Prevent metal parts (e.g. metal chips) or fluids from entering the charger!
- Do not use battery packs or chargers from other manufacturers!
- Protect the battery pack from excessive heat or constant heat sources such as sunlight or naked flames!
- Never use water to extinguish burning li-ion battery packs! Use sand or a fire blanket.
- Check the plug and the cable regularly and should either become damaged, in order to avoid a hazard, have them replaced by an authorised after-sales service workshop.
- Always pull the mains plug out of the socket when the charger is not in use.
- Only for AS/NZS: The tool shall always be supplied via residual current device with a rated residual current of 30 mA or less.
1.3 Emission levels
Levels determined in accordance with EN 60745 are typically:
Sound pressure level L _PA = 65 dB(A)
Sound power level L WA=76 dB(A)
Uncertainty K = 3 dB

Wear ear protection.
Vibration emission value a_h (vector sum for three directions) and uncertainty K measured in accordance with EN 60745:
Drilling in metal a h < 2,5 m/s^2 K = 1,5 m/s^2
Screwing a h < 2,5 m/s^2 K = 1,5 m/s^2
The specified emissions values (vibration, noise)
- are used to compare machines.
- They are also used for making preliminary estimates regarding vibration and noise loads during operation.
- They represent the primary applications of the
3 T e c h n i c a l d a t
power tool.
Increase possible for other applications, with other insertion tools or if not maintained adequately. Take note of idling and downtimes of machine!
2 S y m b o l

Warning of general danger

Risk of electric shock

Read the Operating Instructions/Notes!

Wear ear protection.

Wear protective gloves.

Wear protective goggles.

Do not throw in the household waste.
| Cordless drill | T12 + 3 | T15 + 3 | T18 + 3 | |
| Motor voltage | 10,8 - 12 V | 14,4 - 15,6 V | 18 V | |
| Idling speed* | 1st gear | 0 - 450 rpm | ||
| 2nd gear | 0 - 1500 rpm | |||
| Max. torque | Soft material (wood) | 20 Nm | 27 Nm | 30 Nm |
| Hard material (metal) | 34 Nm | 40 Nm | 45 Nm | |
| Adjustable torque** | 1./2. gear | 0,5 - 8 Nm | ||
| Chuck clamping range | 1,5 - 13 mm | |||
| Max. drill diameter in | wood | 25 mm | 35 mm | 45 mm |
| metal | 14 mm | 16 mm | 16 mm | |
| Tool holder in drill spindle | 1/4" | |||
| Weight without battery, with Centrotec | 1,0 kg | 1,0 kg | 1,05 kg | |
| Charger | TCL 3 |
| Mains voltage (input) | 220 - 240 V ~ |
| Mains frequency | 50/60 Hz |
| Charging voltage (output) | 10,8 - 18 V= |
| Rapid charging | max. 3 A |
| Conservation charging, intermittent (NiCd, NiMH) | approx. 0,06 A |
| Charging times for BP, BPS and BPC battery packs | |
| Li-ion 1,5 Ah, 80 %/100 % | approx. 25/35 min. |
| Li-ion 3,0 Ah, 80 %/100 % | approx. 55/70 min. |
Charger TCL 3
Li-ion 4,2 Ah, 80 %/100 % approx. 70/90 min.
Permitted operating temperature range - 5 °C to +45 °C
Temperature monitoring via NTC resistor
Safety class /II

| Battery Pack | BPC 12 Li | BPC 15 Li | BPC 18 Li |
| Voltage | 10,8 V | 14,4 V | 18 V |
| Capacity | 3,0 Ah | 4,2 Ah | 4,2 Ah |
| Weight | 0,49 kg | 0,58 kg | 0,68 kg |
* Speed specifications with fully charged battery pack.
** The maximum speed is reduced in the lower torque stages.
4 Machine features
[1-1] Buttons for releasing the battery pack
[1-2] Bit store
[1-3] On/Off switch
[1-4] Right/left switch
[1-5] LED lamp
[1-6] Gear switch
[1-7] Drilling symbol
[1-8] Screwdriving symbol
[1-9] Drilling/Fastening selector switch
[1-10] Capacity display
[1-11] Belt clip
[1-12] Torque thumbwheel
[2-1] Battery blanking plug
[3-1] LED-Display
[3-2] Cable holder
[3B] Wall mount
The specified illustrations appear at the beginning of the Operating Instructions.
5 Intended use
Cordless drill suitable for
- drilling in metal, wood, plastic and similar materials,
- inserting and tightening screws
- use with Festool batteries BPC and BPS of the same voltage.
Charger TCL 3 suitable for
- charging Festool battery packs: BP, BPS and BPC (NiMH, NiCd, li-ion are recognised automatically.)
- indoor use only.

The user is liable for improper or non-intended use; this also includes continuous industrial operation.
6
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6.1 Charger cable holder[3-2]
![FESTOOL T 15+3 Li - Charger cable holder[3-2] - 1](/content/2026/02/396740/images/5bc0a1bb4a5d1885f2c829622b42d97e3069be2738168966fe7b4f13fd9b874e.jpg)
Unwind the cable completely from the recess before using the charger.
6.2 Changing the battery pack [2]
① Battery pack is ready for use immediately upon delivery and can be charged at any time.
① When using NiMH or NiCd battery packs, the vacant opening can be closed with the blanking plug [2-1].
The capacity display [1-10] automatically displays the charge state of the battery pack [1-3] when the ON/OFF switch is actuated:
(not NiCd- and NiMH-battery packs)
![FESTOOL T 15+3 Li - Changing the battery pack [2] - 1](/content/2026/02/396740/images/bb01efb5b5cc46809a170e8b3acb50b2745bc89b98c1b4a88157fd2b4d492ac7.jpg)
natural_image
Four horizontal bars with varying internal patterns and a highlighted segment, no text or symbols present70 - 100 %
40 - 70 %
15 - 40 %
< 15 %
Recommendation: Charge battery pack before further use.
6.3 Charging the battery pack [3A]
The LED [3-1] on the charger indicates the respective operating status of the charger.
![FESTOOL T 15+3 Li - Charging the battery pack [3A] - 1](/content/2026/02/396740/images/c1f337bbefe84dfaffca6042e1ed9f2d9f3bb226886a66ae0f6063a6693855ca.jpg)
![FESTOOL T 15+3 Li - Charging the battery pack [3A] - 2](/content/2026/02/396740/images/6c81f3677d3be8c92842e1edc08bc1f19b8dbcbdc74bf92bd66468363dfccbd7.jpg)
LED yellow - lit continuously
Charger is ready to use.
![FESTOOL T 15+3 Li - Charging the battery pack [3A] - 3](/content/2026/02/396740/images/f8ed723dc6d21ec3774fc1e8476918377d8103537861623fe0a34cce20744c84.jpg)
![FESTOOL T 15+3 Li - Charging the battery pack [3A] - 4](/content/2026/02/396740/images/b14e2bc86bf0ec1859eebeb7687765a699b14454557331998f61ba0581fa9eb7.jpg)
LED green - flashes quickly
Battery pack is charged to maximum capacity.
![FESTOOL T 15+3 Li - Charging the battery pack [3A] - 5](/content/2026/02/396740/images/c4a383324aadb4847ef2c73cae3dea343e3dfa957a329f509ea2eda4f7382388.jpg)
![FESTOOL T 15+3 Li - Charging the battery pack [3A] - 6](/content/2026/02/396740/images/ca554b6c2ead58d745c0a0f5e8e4fc1771fe2bd2d4453271ced2a29d60b75a42.jpg)
LED green - flashes slowly
Battery pack is charged with reduced current. Li-ion is charged to 80 %.

![FESTOOL T 15+3 Li - Charging the battery pack [3A] - 8](/content/2026/02/396740/images/1c6c1fd5feb70d2b839aba49fa789fc72080abb33e712dd9bbfeb42401fc2675.jpg)
WARNING
Risk of injury
▶ Always switch off the machine before adjusting settings!
7.1 Changing direction of rotation [1-4]
- Switch to the left = clockwise rotation
- Switch to the right = counterclockwise rotation
7.2 Changing gear [1-6]
- Gear switch forwards (digit 1 visible) = 1st gear
- Gear switch to rear (digit 2 visible) = 2nd gear
7.3 Fastening
Adjust the switch so that its marking [1-9] faces the screw symbol [1-8] .
Adjust the torque accordingly at the torque wheel[1-12].
Position 1 = low torque
Position 25 = high torque
An acoustic signal sounds when the preset torque is reached and the machine then switches off. You must release and press the ON/OFF switch [1-3] again to start the machine.
7.4 Drilling
Adjust the switch so that its marking [1-9] faces the drilling symbol [1-7] = maximum torque.
8 Tool holder, attachments

WARNING
Risk of injury, electric shock
▶ Always disconnect the battery pack before any type of work on the machine!
The order numbers of the accessories and tools can be found in the Festool catalogue or on the Internet under "www.festool.com".
8.1 CENTROTEC tool chuck [4]
Quick change of tools with CENTROTEC shaft
![FESTOOL T 15+3 Li - CENTROTEC tool chuck [4] - 1](/content/2026/02/396740/images/1b27e8b3a8c58f2969831741e519e6a21ceb53263ede7c80af3766785661c221.jpg)
Only clamp CENTROTEC tools in CENTROTEC tool chucks.
![FESTOOL T 15+3 Li - CENTROTEC tool chuck [4] - 2](/content/2026/02/396740/images/a585a2878fcfd32b31f0275dcda811d4c7eb6f2a35be02c694d8cc4a5e53ddd2.jpg)
Wear gloves when replacing!
8.2 Chuck BF-FX [5]
For clamping drill bits and bits with max. shaft diameter of 13 mm.
![FESTOOL T 15+3 Li - Chuck BF-FX [5] - 1](/content/2026/02/396740/images/123d1b50781648e1d5e4f6a92b290b1f72c9e0abff090a8a7fa155b0206a1e60.jpg)
Clamp tool centrally in the chuck.
![FESTOOL T 15+3 Li - Chuck BF-FX [5] - 2](/content/2026/02/396740/images/57aa0958f14054ebd5952682a273a49e04804a7327a43f15a477869606066d4a.jpg)
8.3 Angle attachment DD-AS [6]
Drilling and screwing at right angle to machine (partly as an accessory).
8.4 Eccentric attachment DD-ES [7]
Screwdriving near edges with bits according to ISO 1173 (partly as accessory).
8.5 Tool holder in the drill spindle [8]
Bits can be inserted directly into the hexagon socket holder of the drill spindle.
9 Working with the machine
9.1 On/Off switch [1-3]
Press = ON, release = OFF
① The speed of the machine depends on how far the on/off switch is pressed in.
The LED bulb [1-5] lights up when the ON/OFF switch is pressed[1-3].
9.2 Bit depot [1-2]
Magnetic, for storing bits and bit holders.
9.3 Acoustic warning signals
Acoustic warning signals sound and the machine switches off in the following operating states:

peep - -
Battery flat or machine overloaded.
- Change the battery.
- Place the machine under reduced stress.

peep peep -
Machine is overheating.
- You must allow the machine to cool before using again.

peep peep peep
Lilon battery pack is faulty or has overheated.
- Once the battery pack has cooled, perform a functional check using the charger.
10 Service and maintenance

WARNING
Risk of injury, electric shock
▶ Always disconnect the battery pack from the machine before any maintenance or care work!
▶ All maintenance and repair work which requires the motor housing to be opened, must only be carried out by an authorised service workshop.

Customer service and repair only through manufacturer or service workshops: Please find the nearest address at:
www.festool.com/Service

Use only original Festool spare parts! Order No. at:
www.festool.com/Service
Note the following information:
- Keep the ventilation slits on the machine free and clean to ensure adequate cooling.
- Keep the contacts on the machine, charger and battery pack clean.
Information on battery packs
- Store in a cool, dry place at a temperature between 5^ and 25^ .
- Protect battery packs from moisture, water and heat.
- Do not leave flat battery packs in a charger disconnected from the mains power supply for longer than one month. Danger of deep discharge!
- If you intend to store li-ion battery packs for longer periods without use, you should charge them to 40% capacity (approx. 15 min charging time).
- To avoid short circuits the battery pack should be stored in the packaging supplied.
- Significantly shorter operating times after each charge indicate that the battery pack is worn and should be replaced with a new one.
11 Environment

Do not dispose of the device in household waste! Recycle devices, accessories and packaging. Observe applicable country-specific regulations.
EU only: European Directive 2002/96/EC
stipulates that used electric power tools must be collected separately and disposed of at an environmentally responsible recycling centre.
Return used or faulty battery packs to your local specialist retailer, Festool after-sales service or a designated public waste management facility. The battery packs will then be recycled. (Observe the regulations applicable in your country). The batteries must be discharged on return.
EU only: European Directive 91/157/EEC stipulates that faulty or used battery packs/batteries must be recycled.
Information on REACH: www.festool.com/reach
12 Transport
A li-ion battery pack alone falls below the applicable limit value and certified as per UN manual ST/SG/AC.10/11/rev. 3 part III, subsection 38.3. However, dangerous goods regulations may apply when several battery packs are transported.
13 EU Declaration of Conformity
Cordless drill Serial no.
| T 12 + 3 497835 |
| T 15 + 3 497836 |
| Year of CE mark: 2010 |
| T 18 + 3 497933 |
| Year of CE mark: 2012 |
We declare under sole responsibility that this product complies with all the relevant requirements in the following Directives, standards and normative documents:
2004/108/EC, 2006/95/EC, 2011/65/EU, EN 60745-1, EN 60745-2-1, EN 60745-2-2, EN 55014-1, EN 55014-2.
Charger Serial no.
TCL 3 10002345, 10004911
Year of CE mark: 2013
We declare under sole responsibility that this product complies with all the relevant requirements in the following Directives, standards and normative documents:
2004/108/EC, 2006/95/EC, 2011/65/EU, EN 60335-1, EN 60335-2-29, EN 61000-3-2, EN 61000-3-3, EN 61204-3.
Head of Research, Development and Technical Documentation
2013-05-22
[1-2] Support d'embouts
[3B] Fixation murale
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Four horizontal bars with varying internal segments and a small circular icon at the bottom (no text or symbols)70 - 100 %
40 - 70 %
15 - 40 %
< à 15 %
Position 1 = petit couple
Position 25 = grand couple
Presser = ON, relâcher = OFF
8.1 Mandril CENTROTEC [4]
E T 12 + 3, T 15 + 3, T 18 + 3
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Four black circular icons representing safety and hand protection symbols (no text or labels)natural_image
Four black circular icons representing human head, glasses, headphones, and gloves (no text or symbols)natural_image
Four horizontal bars with varying internal segments and a highlighted segment, no text or symbols present70 - 100 %
40 - 70 %
15 - 40 %
< 15 %
6.3 Accupack laden [3A]
Machine is oververhit.
- Na afkoeling kunt u de machine weer in gebruik nemen.
Li-ion-accupack is oververhit of defect.
peep peep peep
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Four black circular icons representing different workplace or safety symbols: helmet, glasses, headphones, and hand (no text or labels)S T 12 + 3, T 15 + 3, T 18 + 3
natural_image
Four horizontal bars with varying internal patterns and a highlighted segment, no text or symbols present70 - 100 %
40 - 70 %
15 - 40 %
< 15 %
S T 12 + 3, T 15 + 3, T 18 + 3


Äänenpainetaso L PA = 65 dB(A)
Äänentehotaso L WA = 76 dB(A)
Epävarmuus K = 3 dB

Skruning a _h < 2.5 m/s^2
$$ K = 1, 5 \mathrm{m} / \mathrm{s} ^ {2} $$
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Four black circular icons representing different workplace safety symbols: helmet, glasses, headphones, and hand (no text or labels)6.1 Kabeloppvikling for lader [3-2]
![FESTOOL T 15+3 Li - Kabeloppvikling for lader [3-2] - 1](/content/2026/02/396740/images/f711067f6ccfc8ddb52408777e3ecbe191cd227e040cd656cc111bf269a09c76.jpg)
Før bruk må kabelen vikles helt ut av utsparingen.
6.3 Lade batteriet [3A]
LED-en [3-1] på laderen viser gjeldende driftstil-gstand forladeren.r u k
![FESTOOL T 15+3 Li - Lade batteriet [3A] - 1](/content/2026/02/396740/images/c1571c5b7285d546da9c67e30288cac2a3de941577a3bf145df1a6d7c217a765.jpg)
Laderen er klar til bruk.
![FESTOOL T 15+3 Li - Lade batteriet [3A] - 2](/content/2026/02/396740/images/39096867cf763128b99df09f19d24824420adc6089bf1e57c55412c4137482ad.jpg)
natural_image
Four horizontal bars with varying internal patterns and a highlighted segment, no text or symbols present70 - 100 %
40 - 70 %
15 - 40 %
< 15 %
natural_image
Four horizontal bars with varying shades of gray and white, showing a battery icon at the bottom (no text or symbols)70 - 100 %
40 - 70 %
15 - 40 %
< 15 %