Dewalt dc9310 charger flashing

Question edited for a lot more clarity. All questions need full 'make model (what it is)' please.
Question moved from Garden to make model category.

It is this one with wildly differing prices!

https://www.google.com/search?q=Dewalt+DC9096+charger

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Yes normally means faulty battery pack try another one

Roy,
On the front of your charger, you have a menu of what the flashing lights mean. As you get used to seeing the light flashing, you will be able to tell when it is flashing faster or slower. If what you are seeing right now is a slow flash of maybe a flash every second or so, that is normal for letting you know that the battery is in the charging mode and it is charging normally. When it starts flashing faster than that, you maybe experiencing a battery problem. Hope this helps!

Most likely all of the power control circuitry, charging circuitry, and voltage regulating circuitry. At this point, your best bet would be to look for a used one on line.

please clear the contact of the battery and charger, charge the battery again. If still no help, please use a good battery to see if it is the problem of the Dewalt DC920KA battery or the charger.

The dcb106 is a Li-ion battery charger, In this case, I think it is the problem of the battery. And, the battery code of the Dewalt 20v Max tools is DCB201, you can use it to search and find a new battery. You can also try to below store: Dewalt DCB201 Battery

This can happen if the battery is too dead for too long. Keep trying to make it work like you have maybe 20-30 times. Or you can leave the battery in for a few days and let the logic chip do it's job. It should start working in a day or two.

The batteries are probably bad...especially if you kept them outside in the cold or at some point they got frozen...also, if you don't use them for a long period they will exhibit this behavior..get new batteries

The flashing light indicates the charger is charging the battery (or attempting it) and if it never finishes charging you should try to charge a different battery, if the charger charges that one ok then the battery is bad.

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.