Makita 18v drill overloaded and now won't go - Makita Drills

SOURCE: makita dc1804f charger will not charge new i-mh 1834 18v battery

I think your tryiong to charge NIMH batteries oon a charger designed for Lithium Ion batteries. With all the new style batteries such as NICAD, NIMH and LI-ION, charging becomes difficult. Most chargers pre NIMH and LI-ion, were designed for NICAD's. The best advise, match your batteries with the correct charger

SOURCE: grinding noise

possible burnt out in the brush holder assy,checked the motor

SOURCE: chuck change

After removing the screw and inserting the allen wrench shift the drill to the LOW position and turn the clutch to the drill only position. Use an allen wrench about the size of the chuck capacity so that it will not flex when hitting it with a mallet. Sometimes they are stubborn because of the torque but this should work. Put the allen wrench at about a 30deg angle and hit the wrench. I support the chuck on a workbench or a block of wood will do fine. The chuck has standard threads.

SOURCE: 18v makita bhp451 cordless hammer drill.clutch

its prob stuck between gears one and two try a little wd40 on the gear selector switch

SOURCE: on the charger flashes red

Your battery is shot. $75 - $100 for a new one.