MY Ryobi P2102 18V leaf blower battery will not charge, red light stays on, less than a year old, how to tell if it is defective battery or charge?

Jim London

• 257 Answers
• Posted on Feb 05, 2009

SOURCE: Ryobi 18V lithium battery won't charge

Hi, Thanks for getting back to me. The yellow and blinking red indicate a defective cell. Since it has lithium cells and is that new any repair to it would be a waste of your time. Ryobi tools purchased in 2008 have a 2 year warranty. I am guessing you probably got it at a home depot and you should return it under the warranty. All new Ryobi tools have a three year warranty. Good Luck! and Thanks for using fixya!

SOURCE: ryobi battery charger

The same thing happend to my charger, i let it cool down and now the green light goes off and shows red again. thanx for that post

SOURCE: Some Ryobi 18v batteries charge, others don't.

Had the same problem with some makita batteries, Was going to throw them away so decided to take apart and see what was happening. The are made up of 1.5 volt cells soldered together, found that many had .9 volts or less and others had 1.5 or more. This means that some of the cells had gone bad (probably due to lack of chemical reaction). Found that if I collected all of the 1.5 volt together could charge just fine. Problem is it is very hard to get them all soldered back together and even harder to enclose them. If a mfg. could come up with some way to change cells individually they could make a lot of money and save us a lot. So the answer to your question is buy you at least one more battery and recycle your old one.

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.

SOURCE: Ryobi p111 charger -- light stays red

My charger do the same thing. I talked with the service people at Ryobi who said that the red led never goes out no matter how long you charge it. They suggested just charge it for 12 hours and then disconnect. Pretty dumb system, but that's apparently the way it is.