Hitachi DS18DFL, just stops after seconds of use???

The OEM chuck for that is about 45 dollars. There are no substitutes offered.

Did the receipt have it listed?

Many of these have a torque clutch that is used in screwdriver mode that will slip when a certain torque is reached as set by the ring around the chuck area. If you want it to not slip, usually you set it on a symbol that looks like a twist drill.

There are always 2 different rings to the chuck grip surface, you always hold the back one and turn the front one counter clockwise.
You should be able to do this by hand.
But if it is really tight for some reason, you could use a channel lock pliers or even a pipe wrench if you had to, but both might leave some marks.

it sounds like a gearing problem simply take it back to where you purchased it and ask for a replacement or a refund

hi

try to charge the battery at full level and see what happens then.

regards savumihai71

Charge the battery.

You can try this it might take a while but it should work , use the drill untill it actually stops, use it really hard , then recharge for the full time then use the drill again untill it stops [drain the battery ] even get the kids to hold the trigger untill it stops then recharge again eventually you will remove the memory block off the battery , works for me everytime smirf617

You should try to charge the battery again. Or you can try to fix it or then its time to get a new battery.