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First measure of the batterie if its loaden ,only if the brushes are to short replace also anyway the armature and brushes BOTH . it is not good to switch only the carbonbrushes because of a marketing technical design concept because of the heat dissipation that playing tricks insite the armature and it is cheap made by Johnson sometimes the half value compared to other brandnames.
Armatures are new designed in a short time
left the armature of the old but same cdd 18 milwaukee no problems you can change only the brushes and its working again right the same modificated armature marketing technical a new design of this JOHNSON Armature (Johnson is also used in Panasonic powertools bv EY7441 ) it has much more force in the same armature but the heat dissipation plays tricks and if the brushes are to short replace anytime BOTH (the brushes and the armature look at the difference of the turns of the coil front right look the later design more and thiny wire on it more power force but a bad heat dissipation in about 2 or 3 years the brushes are on its end take by heavy work a more powerful tool its better longlasting then this machines Makita has oft a better armature but there are also posibillities in some tools.
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My Ryobi 18V One+ charger blinks green while it's charging. When the battery is fully charged, the LED goes to a solid green. However, one battery recently had a faulty cell. After several hours on the charger, the green and red LEDs both were blinking. That indicated that the battery failed late in the charging sequence. It didn't fail the initial testing by the charger. The other battery I charged that day charged fine.
The extended capacity batteries can take 12 hours to charge in my experience. The regular batteries take less time. The charge time will depend on the battery chemistry(The older NiCd batteries take longer to charge then the Lithium batteries.)
I hope this helps. Assuming you aren't dealing with a cold or hot battery or charging environment, if you have any suspicion about a faulty battery, replace it.
Cindy Wells
(Note: I have a 12V drill as well. Those batteries takes longer to charge for the same relative capacity than the 18V NiCd batteries.)
remove the battery from drill and insert into the charger, the red charge light should come on and then after about an hour it should change to green indicating a full charge, there is a lable on the charger to indicate other problems that might occur. Let me know if you need more assistance.
Directions say green light indicates that the battery is fast charging only,it does not indicate at exact point of full charge. I let my batteries charge for 12 hours for the first time charging,found out myself the same way. Try that and you will notice the difference.
The problem is your batteries are either over heating or worn out. You might also have a problem with the charger but you'll need Dewalt tech support to determine if it's good or bad.
The first thing to do is clean the contacts. Use a white plastic pencil eraser and clean all the contacts you can reach. If there are any contact you can reach with the eraser use a Q-tip that is just damp (not wet) with rubbing alcohol to clean them.
Discharge your batteries completely then put them in the freezer for 8-24 hours. Take the batteries out of the freezer and let the set 24-48 hours after that put them on the charger, they'll either charge or you need new batteries (more likely) or a charger.
Red = quick charge
yellow = evaluating
green = charged
CHARGING A COOL BATTERY PACK
If battery pack is within normal temperature range, the red LED on charger will come on.
Red LED should remain on for approximately 1 hour then the green LED will come on. Green LED on indicates battery pack is fully charged and charger is in maintenance charge mode.
Its likely the batteries will take at least several hours to fully charge, if not more. NiCad batteries are slow charging and usually need 4-6 hours for a full charge. Keep them on longer or even overnight but make sure you remove them in the morning. You will probably find the light turns green after 4-6 hours of charging. If lights stay yellow and green after 12 hours of charging, it may indicate a fault in the battery itself where it will not accept a charge.
left the armature of the old but same cdd 18 milwaukee no problems you can change only the brushes and its working again right the same modificated armature marketing technical a new design of this JOHNSON Armature (Johnson is also used in Panasonic powertools bv EY7441 ) it has much more force in the same armature but the heat dissipation plays tricks and if the brushes are to short replace anytime BOTH (the brushes and the armature look at the difference of the turns of the coil front right look the later design more and thiny wire on it more power force but a bad heat dissipation in about 2 or 3 years the brushes are on its end take by heavy work a more powerful tool its better longlasting then this machines Makita has oft a better armature but there are also posibillities in some tools.
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