Question about Dewalt 7.2-18.0 Volt One Hour Charger

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Why Skil 18V Li-Ion battery lights blinking fast ?

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  • 33 Answers

Bad Battery

Posted on Aug 14, 2015

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Posted on Jan 02, 2017

krb55
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SOURCE: Hi. I have a charger for 18v Dewalt Li-Ion

most chargers will fuction on 240/50 hz, look closely at the writing on the charger, it may say. I have laptop chargers and have used the overseas with no problem, that being said, you might try contacting dewalt and asking them if you can do it. Like I said, it probably already will work without doing anything. i have seen some devices (amplifiers mostly) that have a switch on the bakc to switch voltage, ( I don't recall ever seeing a switch to change line frequecny though), hope this helps a bit

Posted on Mar 10, 2011

c1apton15
  • 3400 Answers

SOURCE: I have a problem with a battery and charger. It is

Take your battery to a Batteries Plus store and have them test it. I suspect you're going to need a new battery. That one is no longer taking a charge.

Posted on Mar 23, 2011

  • 885 Answers

SOURCE: broken dewalt battery 18v lithium ion

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.

Posted on Jan 30, 2012

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1 Answer

Can you use 18v lithium battery in old 18v drill


Yes you can. On tools, 18 volts is 18 volts. Tools don't 'know' how the power is being created, either by Ni-Cad or Li-Ion means. Chargers are totally different. Most Li-Ion chargers can charge older Ni-Cad and some Ni-MH batteries but older Ni-Cad chargers will charge Li-Ion battery untill they overheat and sometimes start on fire because older chargers can't detect when the Li-Ion batteries are full.

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Some of the Makita 18v LXT tools require the BL1830 3.0AH battery and are designed that the 1.5AH battery will not fit.

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I did get an educated electronics eng. tell me li ion batteries 4handtools,are manufactured to only be recharged a set number of times,to avoid tool damage.

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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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I bought 2 P103 lithium batteries and they will not take a charge from my one + (p110) charger. I was informed that these components are all interchangeable. Will the P103s work with the blue 18v ryobi...


That is true the One+ 18V Li-Ion battery packs will work in any One+ 18V Ryobi tool. However the Lithium ion batteries will not charge in the original P110 NiCd charger. You will need one of the the new series Ryobi One+ 18V "dual chemistry" chargers for that. The will charge both types of battery packs.

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I have a 18v battery charger for my great neck drill but the red light insant lighting up when I go to charge my my battery, but the green one is lit up.


Try jump starting the battery. Li Ion batteries often have smart chargers if the battery gets to low the charger doesnt recognise it. If yo have a spare battery fully charge it ant then conect + to + and - to - with wire ( may take two people) kep them connected for 2 mins or so then try in the charger.

Worked for me

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1 Answer

Red and green light flashes alternatingly with only one of my batterys of my makita 18v li-ion fast charger


unplug charger to let it reset. plug back in and then try again, if it still flashes red/green that would indicate a battery failure. check for warranty replacement.

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18V Litiom Batteries (Skil)


I would return it and tell them that the battery wont work.

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Makita dc1804f charger will not charge new i-mh 1834 18v battery


I think your tryiong to charge NIMH batteries oon a charger designed for Lithium Ion batteries. With all the new style batteries such as NICAD, NIMH and LI-ION, charging becomes difficult. Most chargers pre NIMH and LI-ion, were designed for NICAD's. The best advise, match your batteries with the correct charger

Feb 06, 2008 | Makita 18V LXT Lithium - Ion Cordless...

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