What kind of batteries are they? If they are NiMh and haven't been used for a while, they can lose their charge and NOT be sble to be charged again!
Do you have a 3rd battery that does work? Buy a battery to make sure the charger is working or that the drill is working. If yes to both of these, then your old batteries are NFG.
SOURCE: I purchased a new charger for my Dewalt Cordless Drill
They usually have a little pic on there that tells you what the blinking means. I think it is charging, but sometimes it needs a green light too. Check it out. Mine flashes all kinds of signals, when it hits a dead battery, one that won't charge, it flashes something else. It only takes an hour to charge. Is the battery getting charged at all? Hope this helps.
SOURCE: Dead DW972 Cordless Drill?
Easiest and safest:
take the tool and batteries to nearest shop where they sell Dewalt. Ask the guy to let you use their batteries in your tool and vice versa, your batteries in their tool.
DYI procedure:To check batteries:
- if you have some multimeter, try to measure voltage and if possible also amps (but only for a fraction of the second, if battery is good, amperes shoudl jump up very quickly)
- if you have no multimeter, try to find 12V bulb (check spare bulbs for your car), use wire to connect and it should light up.
To check tool:
open it up, take some 12V DC source, put wires on contacts inside the handle where battery connects. Pull the trigger and it should work. you can try to put wires directly to contacts on the motor. Follow cables from the switch to motor.
Juraj
SOURCE: My 14.4V DeWalt DW983 XRP cordless drill just quit
Probably the brushes need replacing on the drill. Order new ones from a Dewalt parts dealer on-line.
SOURCE: 12v drill/driver not holding charge
Seems like your batteries need to be repaired and recharge! For this, let me suggest you the ultimate Nicad battery repair guide. This is very efficient and works on all weak or dead nicad batteries. With this nicad battery fix manual, you can repair, recharge and make your old batteries work like new ones. it is easy to understand and easy to work on. Recharges the batteries within no time. Try it, it is really helpful!
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