CHARGER WAS WORKING GOOD FOR 3 MONTHS OF DAILY LOCKSMITH WORK, TODAY I NEEDED TO CHARGE AND THERE WAS ACTIVITY AT THE LEDS AND NO VOLTAGE AT THE CONTACTS. I CHECKED AND THERE IS 120 CURRENT GOING TO THE CIRCUT BOARD.
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When a Dewalt charger is showing a fast blinking red light it means the battery is no longer chargeable. It may be because of a bad cell or short inside the battery. Whatever the reason the charger will not charge the battery and it needs to be replaced.
I think you've already come to this conclusion, so I'll affirm, you need a new battery.
Something that may be worth trying, if you haven't already, find something a little abrasive and try to really scrub the contacts on the drill, and in the charger, ( obviously you'll want to make sure the charger is unplugged.)
Porter Cable has not offered a replacement for their poorly designed 19.2V chargers. I had the same problem and happen to like my drill and circular saw. I found a universal charger called a model number CHUN-2420. Google it--I got mine for $27 plus shipping. All you need to do to make this work is splice 3 wires.
My charger is a PC model 8624, so the instructions might vary slightly between the chargers. Remove the six screws on the bottom of your PC charger. Remove the bottom section. Remove the screw(s) that attach the circuit card to the plastic housing. Disconnect the 3 pin white charging connector from the circuit card, and cutoff the connector. Discard the circuit card and power cord. Cut the 3 conductor (red/yellow/black) cable coming out of the Chun-2420 approximately 2' from the charger. Splice these three wires to the three wires in the charger housing that connect to your battery. In my situation, Red/Red, Yellow/Yellow, White/Black. To verify, red=positive, black/white=negative, yellow=temperature sensor. Wrap the red/yellow/black cable with electrical tape where it exits the PC charger through the power cord hole. Re-attach the bottom.
Hi, Thanks for getting back to me. The yellow and blinking red indicate a defective cell. Since it has lithium cells and is that new any repair to it would be a waste of your time. Ryobi tools purchased in 2008 have a 2 year warranty. I am guessing you probably got it at a home depot and you should return it under the warranty. All new Ryobi tools have a three year warranty. Good Luck! and Thanks for using fixya!
Maybe sometimes it is the battery do you have 2 batteries you can check it with if it charges the other then its just the battery .If you have a local industrial distributor in the area usually they can test it for you