Dewalt 7.2-18.0 Volt One Hour Charger Logo

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Anonymous Posted on Jul 27, 2012

New dewalt DW9116 will not charge new DC9099 battery

Both items were purchased brand new and stopped working after the first month. Battery was charged for 24 hours prior to first use, then drained completely. This cycle was completed three times to ensure maximum battery charge and lifespan. The indicator light does not come on, and assuming the light was faulty, I attempted to charge the battery anyway with no luck. Nothing unusual occurred to either item, ie extreme temperature/environmental issues. Not only will the charger not charge the brand new battery it came with, but it will not charge other batteries of the same model. As stated, these items are fairly new, and I would like to know if there is an obvious solution I am not thinking of? I see that this product(battery charger) has been recalled, but have had no luck finding the details of the recall.

5 Related Answers

emissionwiz

Marvin

  • 85242 Answers
  • Posted on Nov 07, 2008

SOURCE: Dewalt battery charger

You will need he correct charger, the 24V will destry a very expensive battery.

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Anonymous

  • 1 Answer
  • Posted on Aug 28, 2009

SOURCE: My Dewalt 7.2-18v charger model #dw9116 is giving

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.

tcraignfam

Tyler Craig

  • 30 Answers
  • Posted on Dec 12, 2009

SOURCE: Dewalt battery charger won't charge

As you know, solid red on your charger means that the battery is fully charged and the BLINKING red light means the battery is charging. Unless the light is blinking irradically everything is working the way it is supposed to. If the light is blinking irradically, the battery may just be too hot or too cold to charge ( like when you are driving many lags and your battery dies) and in this case simply wait 15 minutes to charge. If you get a fast blinking light still, the problem probably is with the battery.

Anonymous

  • 27 Answers
  • Posted on Jun 17, 2010

SOURCE: dewalt charger dw9116 got wet while

let dry completely . if any corrosion on pcb clean with contact cleaner from radio shack

Anonymous

  • 553 Answers
  • Posted on Jul 01, 2010

SOURCE: It tells you to that you should charge the battery

The problem is your batteries are either over heating or worn out. You might also have a problem with the charger but you'll need Dewalt tech support to determine if it's good or bad.
The first thing to do is clean the contacts. Use a white plastic pencil eraser and clean all the contacts you can reach. If there are any contact you can reach with the eraser use a Q-tip that is just damp (not wet) with rubbing alcohol to clean them.
Discharge your batteries completely then put them in the freezer for 8-24 hours. Take the batteries out of the freezer and let the set 24-48 hours after that put them on the charger, they'll either charge or you need new batteries (more likely) or a charger.

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Is the Dewalt DE9108 battery charger suitable for charging Ni-Mh batteries?

Dewalt DCB105 li-ion XR Battery Charger 10.8V - 20V


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http://www.drillbattery.com.au/charger/dewalt-DCB105-charger.html

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I have 32 dewalt 18v dc9096 batteries and 1d dewalt 18v dc9099 battery. I tried charging them and back to back they all start off charging fine then charging light speeds up as to suggest their all bad. ...

May read instructions and see if charger is compatible of charging the two types of batteries you are charging ,,,,I have 32 dewalt 18v dc9096 batteries and 1d dewalt 18v dc9099 battery
Sep 27, 2017 • Drills
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Broken dewalt battery 18v lithium ion 2.0ah flashes fast red when in charger

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.
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Dc9099 wont charge in charger. need new charger would like to know which one to buy, the one i have is from usa and is not compatible to our electricity

Firstly I would suggest that you check whether the problem is really with the charger or the Dc9099 Battery itself. All rechargeable batteries deteriorate over time, especially if they are left fully discharged for a long time or are frequently left on charge for extended periods.
If you have a spare battery try charging that.
You can test the charger itself with a digital multimeter (electrical test meter). 1) plug in your battery charger to mains supply and switch on. 2) Set the scale on the test meter to 200 volts DC Voltage (V--) 3) Insert the test meter probe wires in the sockets on the meter marked "Com" (black) and "V/Ohm (red) 4) Touch the other ends of the probes onto the metal contacts on the charger. It doesn't matter which way round you do it
If the voltage reads in the region 20-25V (will be either + or - depending on which way round you place the probes on the contacts )the charger is probably working okay.
If you have a battery charger that is for US Voltage (110)volts you can buy a 240V-110V step down converter quite cheaply here. http://cpc.farnell.com/_/mw2p-045/45w-230-110v-ac-ac-adaptor/dp/PW00942?crosssellid=PW00942&crosssell=true&in_merch=true&
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Trying to find out which batterys will work in the DC720 drill driver??? Scott

The DC9099 or part number 651034-01 ($105.00) is the battery you need.
It can be ordered here
http://servicenet.dewalt.com/Parts/Search?searchedNumber=651034-01

Or you can go to your local service center or Home Depot/Lowe's
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Dewalt charger dw9116 got wet while charging and won't charge any more

let dry completely . if any corrosion on pcb clean with contact cleaner from radio shack
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My DeWalt DW9116, battery charger lead light is fl...

Brown
Brown
Silver

Gold

R21 = 0.11 Ohm at 5 percent

Now can someone help me find the schematic for this model? DW9116
[email protected]
On 3/5/12
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I purchased a new charger for my Dewalt Cordless drill and the red light just blinks. Is this normal

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.
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My new drill suddenly stopped working even though the battery has been charged OK.

Is it Nano li-ion? have you got another spare battery to double- check?
I experienced the same problem with 18V Dewalt nano li-ion battery. Was fully charged, came to work- Dead!!! I was lucky I had spare one, so then i was ok, but anyways had to buy a new one. Check on these things:
1. Battery is faulty. If u have any chances to ask someone who has the same gun (voltage is very important!!! has to be the same!!!- 12V battery to 12V gun, 14.4 to 14.4, 18 to 18 etc). Put your battery into that other gun. If You find the same problem that means your battery is dead.
2.Gun with battery contacts. If you 100% sure, that batterIES (check 2 batteries, or more) are OK, check bottom contacts where u put battery in, use WD40, or similar to clean them.
3. Least common Dewalt thing (Most common in Panasonic drills) is trigger contacts.
Basically i do not know what model is your dewalt, i was only talking in general, but there are no miracles- stopped working suddenly, and what u describe new, for instance my new drill dw727kd is less than 1 year old, i was too stuppid to open that battery myself to void warranty :(
AAAAHHH!!!!!! One more thing - If you have not tried to open these screws- check your nearest Dewalt authorised repair center- new NANO batteries have 2year warranty!
7helpful
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No Manual?

Online Manual (PDF) For DW9116
http://www.dewaltservicenet.com/documents/English/Instruction%20Manual/630429-00,DW9116.pdf

Dewalt DW9116 Product Recall:
http://www.dewalt.com/us/articles/article.asp?ID=187
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