Question about Dewalt Drills

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I brought an 18v battery De9098 from Amazon it will not slot into my blinking charger It appears to have three connecting points my old battery only has two. Can you advise


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IF your battery is having 3 contacts you are lucky but your charger must have also that 3 contacts because that thirth contact is a deep discharge-protection to warn you if the cells are become to low for DC voltage the switch in the machine -the battery and the loader must all off them 3 contacts to will that worked.
The motor stopped immediately if the voltage is becomming to low .the thirth contact is responsible for the protection.
Batteries are expensive wrong batteries more but there are ways for rebuild the switch and batterie contactplate as first. and after that the charger. it will give a longer freshment of capacity.

Posted on Apr 12, 2016

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Brand New Cordless Drill Battery for DEWALT DE9098

  • Type: Ni-MH
  • Volt: 18V
  • Capacity: 3000mAh
  • Color: Black
  • Weight: 1160g
  • Dimension: 136.80x85.43x113.00mm

  • Type: Ni-MH
  • Volt: 18V
  • Capacity: 3000mAh
  • Color: Black
  • Weight: 1160g
  • Dimension: 136.80x85.43x113.00mm

Posted on May 20, 2015

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Posted on Jan 02, 2017

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is this a north american model.all i can find is model DC727 & DC728 model. charger model 9116 & battery is DC9096 may work.charger volts 110v ac. if your buying the individual part like batt & chgr its more expensive than buying the whole kit is cheaper. hope i answer your question

Posted on Jun 21, 2008

  • 75066 Answers

SOURCE: Dewalt battery charger

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

Posted on Nov 07, 2008

  • 1 Answer

SOURCE: Very little juice in freshly charged batteries

have you tried the batterys in any other tool?

you would also need to check the voltage of the batterys they should be at least 18 volts (19 prefered)

then if the batterys do not show charged you would need to make sure the battery charger is putting out voltage.

After that contact your closest Ryobi service center we would check that for free to let you know what you need, I am sure you local place would do the same.

Posted on Mar 20, 2009

  • 33294 Answers

SOURCE: can dewalt 18v batteries be repaired

Theoretically yes. Practically no.

Posted on Oct 11, 2012

  • 304 Answers

SOURCE: 4 contact points on charger yet only 3 0n rhe Battery. what do they do actually. I understand the + and -

They are to do with the feed back for the PCB in the charger and tell it when to switch it off and also sense the condition/temp of the battery.

Posted on Dec 17, 2012

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Replacement battery DE9098 18v 1.3Ah

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Goes through charging process Red light blinks then green light blinks like it is charging then after a few seconds solid green as if fully charged but it is still dead

I had the same problem. Your battery sounds like it got drained too much. The voltage on the battery is too low for the charger to charge. I looked on YouTube (how to charge battery that won't charge). I actually tried this today. I had a battery attached to one of those flashlights from a combo pack and the battery was drained down to 0.64v. The video I watched said take a higher voltage batter and boost it. Like a 20v to boost your 18v. Attach wires from one to the other. + to + and - to - I didn't have any. So what I did was stick 9v batteries together + to - in series I had 5 laying around. I taped a wire to the exposed terminals on the two end batteries and tapped the wire on the battery, which only brought it up to about 2.3volts. Then I just held the two wire on the battery for about a minute. It went up to about 6.3 volts I plugged it in the charger and it finally started charging. I don't know how well it will keep a charge. The batter is 10 or 12 years old. Hope this helps. And check YouTube. There is a lot of videos there.

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Will the P110 charger charge a lithium ion battery

No, the P110, 18V NiCad battery charger, will not charge a 18V lithium ion battery. You need one of the dual-chemistry chargers. If you have the Ryobi ONE+ batteries, you can get the P117 charger ($30) or a charger with an extra battery (P126) from a store like Home Depot. A 6 battery charger and a 12V in-car charger are also available.

I wish that I had better news for you.

Cindy Wells
(who has the Ryobi 12V drill and charger, a few of the 4V tools, and a number of the ONE+ 18V devices and chargers. The single chemistry battery charger is not used much any more.)

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Need to know what terminals to conncect a 12v charging system to a Dewalt 18v battery in order to recharge it. I know it is a three prong system and I am assuming that the small center ground is used for...

I do not recommend connecting anything but the factor charger to the battery. No 12v will not not charge an 18v battery.
They can BLOW UP if you apply too much current.
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The testing light continues to blink when I plug in a battery. The batteries appear to still work but they don't charge or the charger won't charge them. I'm not sure what's wrong.

Check the date on the battery, all batteries are dated, if they are not 2 years old, they will be replaced for free, that goes for the charger too. I have the same charger, but I didn't get the li-ion batteries yet, still using the ni-mh or whatever they are, they were replaced, no problem by home depot. If they don't have a date, they have a date code, you can look that up on line. Check it out.

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Can you charge ryobi lithium batteries in a regular ryobi charger?

NO! Never charge lithium batteries in a charger designed for nickle based batteries like the NiHi your old charger was meant for. Ryobi did design the new Lithium charger to be backwards compatible so you can charge your older 18V NiHi batteries in the Lithium 18V charger.
Also note, NEVER miss-match the voltage, for example, make sure you are not trying to charge 12V batteries in an 18V charger unless the manufacturer has specifically stated that the charger is capable of multiple voltages.

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I have a B&D KC12XC 12v Drill/Driver. Battery does not appear to take charge but on investigation the charger is not showing any voltage at the contact points. Presumably it (the charger) should show...

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