I'm charging a brand new Dewalt 20v battery on the dcb106 charger. When I put on the battery, the light flashes like normal but then dies out in about 3 seconds. Problem with charger? I'm planning to exchange tomorrow morning.

I DON'T KNOW. COULD BE UNDER WARRANTY FOR FREE REPAIR OR REPLACEMENT. I HAVE RYOBI AND UPDATED ITEMS. THEY HAVE 3 CHARGERS 2 SMALLER RATED CHARGERS WOULD NOT GIVE ME
'FULL CHARGED' LIGHT. OLD BATTERIES WOULD NOT CHARGE ON OLDER CHARGER. FROM INTERNET ADVICE, I REPEATEDLY PLUG AND UNPLUG CHARGER BY HAVING PLUG LOOSE WHEN DOING THIS. SOMETIMES IT TAKES 4 TIMES TO CHANGE FROM DEFECTIVE TO CHARGE. SOMETIMES IT TAKES 20 TIMES TO SEE THE CHARGE LIGHT.

if the battery is older than 1 year replace the battery with a new one , also I know its difficult but try to not charge a battery till its dead , short cycle charging of battery's kills em fast if battery is less than 1yr contact Milwaukee its still under warranty

High Performance Current Mode Controller doesn't work for you in the charger. According to the link, scheme.http://kazus.ru/forums/attachment.php?attachmentid=51161&d=1377505983

This is what dewalt is saying...The Dewalt 12V/20V MAX work-site charger/radio functions as an AM/FM radio and recharges your 12V/20V Dewalt batteries (batteries not included). The 3-stage charger can recharge your batteries in as little as 1 hour, and the radio can run off 12V/20V batteries for cordless operation

• 2 AC power outlets offer more versatility for jobsite power
• Auxillary & USB ports allows for connection to CD, MP3, portable satellite receivers, and other digital audio devices.
• USB port allows device to be charged via USB when radio is plugged into a wall outlet
• Class D amplifier, woofers and tweeters provide full range of high and low sound for optimum sound quality,( hope this helps)

I had the same issue. The problem is resolved by fully inserting the battery pack until it clicks into the charger. When inserted properly you shouldn't have this problem

sounds like the charger is bad

Here is the manual for the charger - note on page 2 the meaning of the problem you describe - time to replace batteries (depends how old they are)
http://download.sears.com/own/00925737e.pdf

That being said, check the videos out, perhaps can get it to work after all for a while longer.

The cells in the battery have gone bad

The Dewalt charger's red light will flash while charging and go to steady red when the battery is fully charged. If you go to the Dewalt ServiceNET site at http://servicenet.dewalt.com/ you can search for the manual for any of your tools. DCK294L3 does not have a manual as that is the model number for the whole kit. Search for the model number of each of your tools and you can get the manual for them. Inside the manuals it also describes the different meanings of how the red light is flashing on your charger.

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.