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A standard cordless compact DeWalt 18V drill with a high performance motor that delivers 380 watts. Equipped with easy to hold design that allows you to work in difficult spaces.

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Why won't my battery charge?

My battery will not charge even when it is hooked up to the charger.

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If your battery won’t charge, first look to see if the light is flashing on the charger you plug into the wall. If the light is not flashing then there may be a blown fuse in the battery charger which can be replaced. If it is not a blown fuse it may just be a defective battery or an old battery since batteries over a period of time may not be able to hold charge as well as when you first got them. So in that case I recommend buying a new charger if you can not replace the fuse on your drill.

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A little confusing (no pun) You suggest buying a new charger if the batteries are defective???

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Confusing to say the least, all of my dewalt batteries are approx 24 months old and same goes for my chargers. I get one flash of the red light then nothing...none of my batteries should be depleted and the chargers should still be okay too

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I know this Answer may be a bit delayed but I had exactly the same issue after using my Dewalt 18v lithium ion battery to run Christmas lights. The battery got totally depleted and when trying to charge it all that would happen is one flash of the charger then absolutely nothing. No indication of life while pressing the indicator button on the battery either. Apparently these batteries can go into sleep mode if totally depleted.

To cure the issue I got a fully charged identical battery and connect wires to the outer + and - slots. I then connected the dead battery to the other end of the wires in the same slots…..make sure + goes to + and - goes to - . I found I only had to do this for a few seconds then Disconnected all wires. On pressing the indicator button on the dead battery I then got a faint flash…..next I place the battery in the charger and it started to charge as normal and after an hr it was fully charged and worked as normal.

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I have had this a few times patience is the answer put flat battery in charger and leave for about an hour until red light comes on without flashing then remove battery and plug back in should charge fully then

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These days, it’s due to tired original NiCd batteries. I have a DC970, and both of my batteries are done. However, my recommendation here is NOT to match what you have, or buy knockoffs; scrap the NiCd setup, even if you buy a new drill with 2 batteries in the box. They may come back if jumped, if you don't fry the pack permanently (it can help, but you're more likely to kill it after 11+ years of abuse, use and memory effect shock removal).

What I usually recommend for these older DeWalts is the DCA1820 adapter and the 20V batteries (even basic 1.5A will do, since it's capable of more capacity then NiCd will ever be, with zero memory effect). The rub is this dream setup is more than a new drill, so it's more cost effective to buy a drill on sale new, or a refurb 2-battery combo from a place like CPO Outlet (read: only buy Brushless, not brushed; brushed is old tech and the original NiCds are brushed with age) and buy the DCA1820 from a place like Home Depot as CPO does not sell it piecemeal. DeWalt also sells the parts needed as a kit, but it is not truly as cost effective UNLESS IT IS ON SALE.

Being as I own one of these NiCd drills too and I need batteries, I did my research on this and when I looked at the DCA2203C vs a 2-battery bundle CPO refurb and a Home Depot sourced DCA1820, it's about the same both ways. NOTE: The drill kit and adapter setup may be slightly more expensive in some cases, but it's within the $40-50 range most of the time -- if there is one with how often the kits get discounted.

My NiCd charger is in a box since I do not intend to bother with any new NiCd batteries -- the downsides are worse than upgrading to LiOn and buying new tools when there's an official fix.

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hi nick, hope you have a great day

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Found a site that answers the question:

https://thefixitdad.com/index.php/2022/0...

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Thanks David, this was very helpful!

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