Question about Dewalt 7.2-18.0 Volt One Hour Charger

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Old batteries started not to hold a charge very long. I purchase 2 new batterys and still have the same problem. NOTE- i WAS USING MY TOOLS outside in 100 plus degree heat for weeks.

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Does the charger check out? use a volt ohm meter to check the chargers output. when you charge all four batteries us the meter to check the batteries charge. this should give you an idea where the problem is.

Posted on Sep 02, 2010

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Posted on Jan 02, 2017

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Hi,
Yes you are right, a defective battery.
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Hello sara_lou,

I have 2 suggestions for you:

1) Look into purchasing an external rechargeable battery pack for PDVD units (available at Best Buy). It is an external pack that will connect to the players AC port.

2) Prepare for surgery! You will need 6 rechargeable AA batteries, a soldering iron, super glue, and patience.

You'll need to open the battery case and look at the batteries within. Note the direction and polarity of all the batteries and how they are wired/soldered together. You will need to replace all these batteries with the new ones you have purchased. Wire together the new batteries in the exact same order and polarity as the old dead ones. Remove the old ones and replace with the new ones. Solder in where necessary and be sure not to bridge any contacts. Put the case back together with a little super glue on the seam. Replace into the PDVD player when the battery case is dry (or else you may permanently mount the battery case into the player) and set to recharge using the AC pack. if everythign was wired correctly, you should have a charged battery pack in about 1 hour (since most rechargeable batteries come with 3/4 charge in them).

While I don't recomend this second solution, it is plausable for the hobbiest electrician or DIY-er.

Best of luck to you!

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If it is a new battery, then take it back as it could be defective.

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