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My Ryobi one plus charger is blinking both red and green lights even when there is not a battery in it being charged. Is this easily fixable or a case of having to buy a new one? Thank you.

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I read online that someone fixed this problem by rotating the plug in the wall. Another person said that the terminals in the charger were a bit corroded and possibly bent so they caused the lights to flash.

Posted on Sep 27, 2020


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My Ryobi 18v battery blinking green and does not stop.

The batter is faulty , perhaps one of the cells has shorted out .

Why is the green light blinking on the Ryobi charger with the battery in it

My Ryobi 18V One+ charger blinks green while it's charging. When the battery is fully charged, the LED goes to a solid green. However, one battery recently had a faulty cell. After several hours on the charger, the green and red LEDs both were blinking. That indicated that the battery failed late in the charging sequence. It didn't fail the initial testing by the charger. The other battery I charged that day charged fine.

The extended capacity batteries can take 12 hours to charge in my experience. The regular batteries take less time. The charge time will depend on the battery chemistry(The older NiCd batteries take longer to charge then the Lithium batteries.)

I hope this helps. Assuming you aren't dealing with a cold or hot battery or charging environment, if you have any suspicion about a faulty battery, replace it.

Cindy Wells
(Note: I have a 12V drill as well. Those batteries takes longer to charge for the same relative capacity than the 18V NiCd batteries.)

I have a brand new Ryobi kit put battery in the charger the red light goes on and the green light flashers on and off is this charging or should the green light go off until battery is charged.

When the battery is charged the green will be steady on and the red will go off. Flashing green is an indication that it is charging.

hope this helps?

My Brand new Ryobi 18v lithium-ion battery P104, I bought this three years ago and just now needed it. I opened it from the blister pack it was in and I tried to charge it. When in the charger the red...

get the new charger; and consider returning to store or manufacturer.
if you have the black charger, throw it out
you need the green/two-tone charger for ryobi one 18v
Mar 18, 2017 • Drills


Try rotating the plug that goes into the wall. I know it sounds irrelevant but ive had the same issue and it worked for me. The positive and negative may be reversed in the dock.

Battery not charging. Orange and Green light on charger. 18V Plus one system

The air holes on the bottom of the batteries are there for the battery to vent. Downside is, these vents can also allow moisture to get in and prevent contacts from letting the battery charge and causing the "defective" display on the charger.

I work on pool and spa equipment and I had dropped my batteries in a small puddle of water where I was working, both went dead immediately and both showed "defective" on the charger even after drying them out for a few days.

Tried using a can of air and gave each of the vent holes several shots... The batteries charged and are now working perfectly.

I'm sure even overnight condensation could be the culprit for a charger to display "Defective"

When i place a 18v battery which is dead on the charger both red and green lights come on and stay on. This is happening with both batteries. and neither holds a good charge. What is the problem? It is...

In some model the FUSE got burn.But if this is not your case one or both,batts and charger are burn.Try first to change the batt, then if this not work, change the charger.

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For others with the same problem (flashing red light won't go off)...make sure you FIRMLY PUSH the battery down onto the charger and engage the latches. Simply resting the battery on the charger will not work.
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