10.8 - 12V Peak Cordless Impact Driver WH12DD

Cordless Impact Driver: WH12DD

Super Easy to Work with

  • Versatile and Compact with the Shortest* Head in its Class

    • As of November 2018, among 10.8V cordless impact drivers made by leading power tool manufacturers. (Survey by Koki Holdings)
    134mm Overall Length

Runtime per Charge *

Approx. 500 Wood Screws

ø3.8 x 50mm screws in lauan without pilot holes

  • With the BSL1240M battery. The values are shown for reference purposes. They may vary according to conditions.

Other Features

  • 3 Tightening Modes (Soft / Power / Self-drilling Screw)
  • LED Light

12V PEAK Slide Lithium-Ion Batteries

  • BSL1240M

    4.0Ah / BSL1240M

  • BSL1225M

    2.5Ah / BSL1225M

  • BSL1215

    1.5Ah / BSL1215

Lightweight. Compact. High-Capacity*.

  • Applies to the BSL1240M.

Clear Battery Status Indication (BSL1240M / BSL1225M only)

  • The remaining battery indicator lamp shows not only charge level but also battery overheating and failure when they occur.

    Remaining battery indicator lamp / Remaining battery indicator switch
Indicator Lamp




Battery Charge State 75% and above 50% - below 75% 25% - below 50% Below 25% 0%
Indicator Lamp

Battery Charge State Output suspended due to high temperature*1 Output suspended due to failure*2
  1. Remove the battery from the tool and allow it to cool down fully.
  2. The problem may be with the battery so please contact your dealer.

Class-leading* Charging Speed

  • Approx. 60min with BSL1240M Battery

    Approx. 37min with BSL1225M Battery

    Approx. 22min with BSL1215 Battery

    Fast Charger

    Fast Charger

  • As of November 2018, among 10.8V slide Lithium-ion batteries made by leading power tool manufacturers. (Survey by Koki Holdings)

BSL1240M / BSL1225M / BSL1215 12V Peak Slide Lithium-ion Battery

Model BSL1240M BSL1225M BSL1215
Voltage 10.8 - 12V Peak
Capacity 4.0Ah 2.5Ah 1.5Ah
Charging Time at 20℃* Approx. 60min
(with UC12SL)
Approx. 37min
(with UC12SL)
Approx. 22min
(with UC12SL)
Dimensions (L x H x W) 91 x 45 x 74mm 86 x 42 x 65mm 86 x 42 x 65mm
Compatible Charger UC12SL
  • The charging time may vary depending on the operating conditions and battery state.


Drive 6.35mm
Capacity Small Screw 4 - 8mm
Ordinary Bolt 5 - 14mm
High Tension Bolt 5 - 12mm
Self Drilling Screw ø3.5 - ø5mm
Tightening Torque 135Nm
Battery Voltage 10.8 - 12V Peak
No Load Speed Soft Mode 0 - 1,300/min
Power Mode 0 - 3,200min
Self-drilling Screw Mode 0 - 3,200min
Impact Rate Soft Mode 0 - 2,500/min
Power Mode 0 - 4,000min
Self-drilling Screw Mode 0 - 4,000min
Overall Length 134mm
Weight *1 1.1kg
Standard Accessories *2 2 Batteries (BSL1240M), Charger (UC12SL), Battery Cover, Carrying Case
  1. According to EPTA-Procedure 01/2014.
  2. Standard accessories vary by country or area.

Note: Manufacturer reserves the right to change specifications of parts and accessories without notice. Specifications and standard accessories may vary from country to country.

  • Please contact local dealers for product availability and product details.