Question about Ryobi Multi-Volt Battery Charger

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Red light in charger flash when battery is put in to charging

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All three of my batteries are doing it. They were all working fine last week. I doubt all the batteries died at once.
Would it be something to do with the charger?

Posted on Aug 21, 2017

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This behavior is typical of trying to charge a battery that is wither too hot (let it rest for a hour) or one that has done its job and is ready for the battery retirement home. Replace your battery for best results with your Ryobi battery powered tool.

Posted on Jun 02, 2011

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Posted on Jan 02, 2017

emissionwiz

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SOURCE: Cannot recharge 18v battery, place

You will need to replace the battery it is defective.

Posted on May 18, 2011

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1 Answer

Red light flashing will not charge battery have left over night with no result


Sometimes, this is a result of a battery that is too cold (below freezing-warm it up). Sometimes it can be too hot (discharged under heavy stress-let it cool down). Sometimes there may be insufficient voltage, I have had problems in older houses, get closer to the electrical panel to plug in, or you may have to wait until you get home. Red flashing may mean https://www.youtube.com/watch?v=8rZqYmPsZycthe charger or battery is to hot and must cool down before it will charge. The charger will not charge a battery if the lights are flashing. Solid Red light means it is charging and solid green light means it is charged. Plug the charger in first before putting the battery on the charger. If the charger has been dropped or hit the floor the coil inside could have broke loose and damaged the charger requiring it to be replaced. Below is an unconventional way to charge the battery if the charger is no good. BE CAREFUL
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Batteries don't charge. I have a new battery, and neither of the old or new batteries work in the charger. I get flashing lights only, sometimes red, sometimes green, but in the end, the battery isn't...


Dust getting in the charger is a problem, Try blowing it out with a moisture-free dust remover, found at most any store. Green flashing means improper power, due to dust or power from the outlet, try a differant wall outlet. Red flashing means the charger or battery is to hot and must cool down before it will charge. The charger will not charge a battery if the lights are flashing. Solid Red light means it is charging and solid green light means it is charged. Plug the charger in first before putting the battery on the charger. If the charger has been droped or hit the floor the coil inside could have broke loose and dammaged the charger requiring it to be replaced.

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Clean contact points of both battery and charger with q-tips dipped in rubbing alcohol. This solved my problem with blinking lights and not charging of the batteries.

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I had this problem a few weeks ago (i.e. flashing red LED). All I did was remove the power plug from the charging unit, turned it around 180 degrees, then plugged it back into the charging unit. Red LED came on steady & the battery (which is the one that came with the camera) recharged as normal.

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