Question about Dewalt Drills
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Posted on Jan 02, 2017
It means there is too high or too low a voltage coming into the charger. Check your chord.
I had the exact same problem. After using the necessary security bit to crack mine open, I found that the large capacitor inside had come loose and needed to be re-soldered.
That fixed my charger.
Posted on Aug 28, 2009
if its anything other than replacing the cord, it is not considered "repairable" and there are no schematics offered.
there was a recall on this model charger, so a dewalt service center might be able to repair or replace it free of charge.
Posted on Dec 06, 2009
Lithium-Ion batteries require careful charging and temperature monitoring while in the charger. Ryobi's Charging station monitors many functions and shuts off when the battery has gone through a complete charge. This is indicated by a steady Green light. Once the Charge indicator is a steady green the charger stops charging. With any battery It will slowly discharge and I don’t think the Ryobi will maintain a battery that is never removed. For example, if after a complete charge cycle if the battery was left there for 2 years and then you went to use it, it would likely be completely discharged. However if the battery charger is unplugged then plugged back in a new charge sequence would start. I lose power at my house about every 6 months or so. Once power is restored a new cycle would start and the charging cycle begins again.
Hope this helps and have a great day.
Posted on Apr 01, 2010
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For NiCd and NiMH batteries - check the battery voltage (for a good battery it is ~ 19, V); each battery contains 15 units 1.2 V each; you can test each unit after disassembling the battery case (my have 4 screws each, and the case has bottom and top parts). First charge the batteries; second, disassemble cases and check each unit voltage (shouldn't be less than 1.2 V); then take any battery tester (for AA, AAA and other batteries and accus for home usage), attach 2 long (~10 inches) wires to tester's testing contacts, and test each 1.2V unit for current - if it is in "yellow" or "red" zone - the unit is dead and needs replacement
Posted on Jun 08, 2010
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.
Posted on Jan 30, 2012
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