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The Dewalt DCD771C2 is a compact, lightweight, high performance drill released in September 2013 whose usage is ideal for projects around the house.

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DeWalt lithium ion 18v issues

Hoping someone can help me out here I have 4 x 18v li ion batteries 2 of which are 5 months old & 2 which are 8 months old. When at work the other day one of the batteries ran out so I put it on charge to discover my other 3 were also flat, after charging all 4 batteries until the charge complete light came ON I went to use them to find that they all went flat after about 5 seconds of pressing the trigger on the drill so I then tried these batteries in other cordless tools such as my impact driver with no luck.

 I tested each battery with a multimeter and each battery had between 10-11 volts.

 I find it hard to believe all 4 batteries would die on the same day so I stuck my multimeter in the charger and although the 'charging' light would not flash the charger was out putting pulses of between .5 - 3.5v DC, is this normal?

 Does anyone know a method of pinpointing the problem? Eg battery cell test or charger test?

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Bu iyi bir soru mu?

Puan 2
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I had the same problem! What I was doing wrong was I didn’t push the battery hard and far enough on the charger. When battery is inserted properly you will feel it click into place then the battery will truly charge.

Bu yanıt yardımcı oldu mu?

Puan 7

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Guy - Thank you from Florida. I read your answer and it works!

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Yes worked thanks, needs a fair bit of muscle to force the battery onto charger. I am always scared I might break something using that much force!!

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Sometimes you feel so stupid ? thanks for the answer

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Thank you so much! I knew it had to be something i was doing wrong! Why isn't this made clear in the instructions?!!!

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