Question about Ryobi Multi-Volt Battery Charger

2 Answers

Yellow & Green lights stay on,battery will not charge

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I hooked a 12 volt car battery charger to the battery for about two min. Then I put it in it's own charger,the yellow & green lights came on for about 5 sec. then the red light came on . About 30 min. later the green light came on and the battery is fine.

Posted on Jun 23, 2009

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Just to confirm lilgenl13 s solution this actually did work. The voltage started at 1.2 volts and would not take a charge but putting the 12 volts to it immediately brought the voltage up to about to about 9+ volts and the battery charger then accepted the pack to take a charge. WoW who would have thought, Thanks

Posted on Jan 28, 2011

  • David Kerr Nov 12, 2011

    It does work - a few minutes on the car charger - then the "smart" charger can figure the rest out. Thanks!!!

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Posted on Jan 02, 2017

  • 13 Answers

SOURCE: The Yellow and Green light both come on and stay

http://oneworld1.inetu.net/manuals/ryobi/hp1442m_1802m_874_eng.pdf
It sounds like your battery is bad. If yellow and green are on for more than 15 minutes it probably a defective battery pack. See page 8 in the manual.

Posted on Nov 24, 2009

Editor925
  • 285 Answers

SOURCE: yellow / green light will not go off when charging

Its likely the batteries will take at least several hours to fully charge, if not more. NiCad batteries are slow charging and usually need 4-6 hours for a full charge. Keep them on longer or even overnight but make sure you remove them in the morning. You will probably find the light turns green after 4-6 hours of charging. If lights stay yellow and green after 12 hours of charging, it may indicate a fault in the battery itself where it will not accept a charge.

Posted on Jun 20, 2009

  • 13 Answers

SOURCE: Green & Yellow light on 14.4V charger

It sounds like your battery is bad.

If both yellow and green LEDs come on, this indicates
a deeply discharged or defective battery pack.
Allow the battery pack to remain in the charger for 15
to 30 minutes. When the battery pack reaches normal
voltage range, the red LED should come on. If the
red LED does not come on after 30 minutes, this may
indicate a defective battery pack and should be
replaced.
n After normal usage, a minimum of 1 hour of charging time
is required to fully recharge battery pack.

Posted on Nov 24, 2009

  • 13 Answers

SOURCE: both green and yellow light stay on and batteries

If both yellow and green LEDs come on, this indicates
a deeply discharged or defective battery pack.
Allow the battery pack to remain in the charger for 15
to 30 minutes. When the battery pack reaches normal
voltage range, the red LED should come on. If the
red LED does not come on after 30 minutes, this may
indicate a defective battery pack and should be
replaced.
n After normal usage, a minimum of 1 hour of charging time
is required to fully recharge battery pack.

Posted on Nov 24, 2009

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It sounds like your battery is bad.

If both yellow and green LEDs come on, this indicates
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Allow the battery pack to remain in the charger for 15
to 30 minutes. When the battery pack reaches normal
voltage range, the red LED should come on. If the
red LED does not come on after 30 minutes, this may
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n After normal usage, a minimum of 1 hour of charging time
is required to fully recharge battery pack.

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Just was on a website for Ryobi drills and it states that if the yellow and green light stay on for more than 15 minutes the battery is fried. Couldn't find the link but if you do a search for Ryobi Drill 18 volt you should find the same info. It was as product review from Australia I think.

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