Ryobi Two  18V Lithium-Ion Batteries + Lithium-Ion Charger Upgrade Combo Pack Logo
Posted on Nov 26, 2010

My new 18v lithium batteries run out of charge after about 10 mins of continuous use is this about roght as my old Nicad batteries would go for about 20 mins this is using them with a drill driver with a metal brush stripping metal railings

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  • Contributor 8 Answers
  • Posted on Nov 28, 2010
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Joined: Nov 17, 2010
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This is not right. They should last much longer then that. I have one of the more expensive 18V lithium batteries (the one with the button on it that tells you if it needs charging or not) and I can use mine almost all day before it needs to be recharged. I do construction work and I use my Ryobi products almost all day. Either both batteries are bad (I don't believe that is the case) or the charger is not charging them all the way to a full charge. With this charger, you do need to make sure that you remove the batteries as soon as the green light comes on. It is not good on these batteries to stay charging after they are fully charged. You also should not leave the charger plugged in without any batteries charging.Please tell me more about the charger. When you plug in the charger, does the red light come on? When you plug in a battery, does the red light stay bright and the green light blink? Does the red light go off and the green light stay on bright when you remove it from the charger?
If the charger is not working correctly, then return it for a new one.

Testimonial: "thanks wll give it a try out"

  • Anonymous Jun 29, 2011

    Are these batteries the P104 fat batteries that have the charge indicators or the thinner P103s. It turns out that the P103s are similar to the NiCds in performance, however, they will cut out and stop working long before the NiCds since the NiCd will go until they are totally dead, the Li-Ion battery will not let you go that far down. I am actually not as happy with the new Li-Ion than with the old NiCd because of this.

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