Dremel 10.8V Lithium-Ion Cordless Rotary Tool Kit w/ 40 Accessories - 8000-02 Logo
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Anonymous Posted on Feb 10, 2013

Dremel charger model 856 won't charge. Charging light will not come on.

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Dale Chambers

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  • Posted on Jan 02, 2014
Dale Chambers
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I had a similar problem. I was going to take the charger apart but I ran into triangular socket head screws so in desperation I gently bent the 5 contact wires out from the battery socket. After slipping in the battery and plugging the charger into the wall socket, the charging light returned. The charger contacts that come into contact with the battery are easily pushed back and after a few battery insertions fail to make contact with the battery.

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  • Jerry Laudermilk
    Jerry Laudermilk Jan 12, 2015

    I will give it a shot right now thanks

  • slj852 Oct 09, 2017

    Have same problem with mine. Have to keep bending the contacts out in the charger so they will make contact with the battery.

  • Jacqueline Williams Dec 11, 2018

    One of mine is broken. Can't find a new one.

  • John Bennett
    John Bennett Jan 11, 2019

    Wished I had checked this site first. I managed to "drill/destroy" the triangular fixing screws and cut a copper track in getting at the circuit board before reading this site. The 1000uF electrolytic capacitor looked as though it had leaked so replaced it. Put everything back together and still would not work. That's when I read this site and tried flexing the connectors as suggested. What do you know, it now works.

  • Anonymous Mar 19, 2019

    Thank you, it worked.

  • Bill Carter Aug 30, 2019

    Many thanks Dale. It worked for me.

  • Nicolas Carranza
    Nicolas Carranza Nov 20, 2023

    Yeah buddy. 3 minute fix for the charger. Excellent advice!

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Craig Harris

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  • Posted on Jul 09, 2020
Craig Harris
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My permanent solution to this problem which I have had for years with one of my favorite tools. I have pried prongs, cleaned contacts. wiggled, jiggled and set at odd angles and have never gotten a consistent green charging light. The mounting and prong design just does not allow for the battery to properly seat. If it did, there would not have been over 5,700 people looking for a solution. I have chosen the not too safe solution of removing the circuit board from the holder then inserting the battery. For safety I did tape over the AC contacts on the transformer. Pretty, no, effective, yes. I have recharged my 3 batteries over 20 times and I have never had the green charge light go out until they are fully charged.

Dremel charger model 856 won't charge.  Chargi - p1050580-undefined-undefined-0.jpg

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Jerry Laudermilk

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  • Posted on Jan 12, 2015
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Still won't light up. Tried two separate outlets.

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