Most likely cause is the electronic protection system tripping. The drill has a built-in system that cuts power if the battery is overloaded or overheats. It protects both the tool and the battery.
- Remove the battery from the drill.
- Let both the drill and the battery cool down for at least 15-20 minutes.
- Reinstall the battery. Press the fuel gauge button on the battery to check the charge level. Ensure at least one LED is lit.
- Pull the trigger. It should operate normally now.
IF THAT DIDN'T WORK: The battery might be completely discharged or faulty. Try a different, fully charged ONE+ 18V Lithium+ battery if you have one. Also, inspect the battery contacts on both the drill and battery for dirt or damage.
HEADS UP: Avoid continuous, high-torque applications that cause the motor to bog down. This overheats the system and triggers the shutdown. Let the tool work at its intended speed.