Battery charge not charging with the Ryobi 40v lithium-ion charger

SOURCE: The Ryobi 18V battery will no longer charge in the charger.

If you have a battery that will still charge you can take the one that wont charge and place a small jumper wire in both sides of the battery. + and - Then put it in the charger. place the jumper wires + to + and - to - for one sec and you will see the yellow light go off and it will charge.

SOURCE: can you charge ryobi lithium batteries in a

NO! Never charge lithium batteries in a charger designed for nickle based batteries like the NiHi your old charger was meant for. Ryobi did design the new Lithium charger to be backwards compatible so you can charge your older 18V NiHi batteries in the Lithium 18V charger.
Also note, NEVER miss-match the voltage, for example, make sure you are not trying to charge 12V batteries in an 18V charger unless the manufacturer has specifically stated that the charger is capable of multiple voltages.

SOURCE: Dear Sir/Madam, I would like to

you shouldnt have a problem with it, but you can also go to their webpage and research there if there is any farther doubt.

Testimonial: "Prompt answer and solution. Thanks"

SOURCE: Will the P110 charger charge a lithium ion battery

No, the P110, 18V NiCad battery charger, will not charge a 18V lithium ion battery. You need one of the dual-chemistry chargers. If you have the Ryobi ONE+ batteries, you can get the P117 charger ($30) or a charger with an extra battery (P126) from a store like Home Depot. A 6 battery charger and a 12V in-car charger are also available.

I wish that I had better news for you.

Cindy Wells
(who has the Ryobi 12V drill and charger, a few of the 4V tools, and a number of the ONE+ 18V devices and chargers. The single chemistry battery charger is not used much any more.)