Question about Ryobi Two 18V Lithium-Ion Batteries + Lithium-Ion Charger Upgrade Combo Pack

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Purchased the two lithium and charger combo about two years ago. I use my Ryobi drill and flashlight in the garage and around the house no where near commercial/professional levels. About three (3) weeks ago, tried to recharge both batteries and both of them showed defective on the charger. Is that common for both batteries to go bad at one time? Could the charger be at fault?

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How long have these 2 batteries been standing idle without being charged? Lithium ion batteries can still discharge if left for too long. There is a voltage detector which detects whether the cells are too far discharged to be safely charged again and if that occurs the circuit is broken and the batteries will be deffective in the charger.
I have had the same problem with these and other LI batteries. Answer is replace the batteries and then make sure they are given a quick charge on a regular basis. However common advice seems to be that LI's should not be kept fully charged, but just partially charged until needed, then charge them for use, especially if usage is sporadic

Posted on Nov 18, 2010

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3 Answers

My battery charger just does not work anymore! I have the two batteries and charger that were purchased as a package with my drill. I bought many other pieces to add to my Ryobi family.


Receipt will do nothing for you if it is out of warranty. Normal warranty is for three years.

Write to the company regarding your situation - see if your unit has a serial number that can give indication of age of unit. Perhaps they will replace the charger for you.

Make sure that the charger cord/connections are good and that unit is receiving power from wall.

Sep 17, 2016 | Ryobi Two 18V Lithium-Ion Batteries +...

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Who rebuilds ryobi 18 volt li ion batteries


Rebuilding the Lithium batteries is a waste of time and money. For starters the cells cost a minimum of $5 ea and a low power pack takes 5, so now you are in for $25 without doing any work. You can pick up packs on eBay for around $30 - $40 if you shop around. If you know what you are doing, you can strip cells from bad packs and test them to find good ones and then rebuild with those. It can be tricky and you may get mixed results.

Aug 23, 2012 | Ryobi Two 18V Lithium-Ion Batteries +...

1 Answer

I purchased a Ryobi drill with Lithium batteries (Large/with gauge, small without gauge) in June 2009. The large battery lasted about 3 months and started holding less and less charge (yellow, then red on...


Batteries must be completely dead before recharging or battery life is shortened.large battery is probably defective contact Ryobi to replace battery they while probably send you new batteries for free if you tell them you are going to stop buy their products.Tell them about both batteries they will probably replace both for no charge

Jun 12, 2011 | Ryobi Two 18V Lithium-Ion Batteries +...

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What Ryobi batteries p103 or p104 will a battery charger that came with my p100 batteries charge? Or will the charger work with these batteries?


If you have a P100 NiCad battery, the charger for that will not charge the new Lithium Ion P103 or P104 batteries. You need a specialised Ryobi Lithium Ion battery charger like this one

Jan 11, 2011 | Ryobi Two 18V Lithium-Ion Batteries +...

1 Answer

Can you charge ryobi lithium batteries in a regular ryobi charger?


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.

Dec 25, 2010 | Ryobi Two 18V Lithium-Ion Batteries +...

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I bought the two pack Ryobi Lithium-Ino Batteries along with the six battery Ryobi One + Charger. When I use it on my P201 Ryobi 1/2 Drill and the drill encounters any type of a torque situation the...


I would not say they are not defected, but I think they are not getting fully charged. I have the same problem with my battery once I have used it all day and the red light comes on from the fuel gauge. I have the P104 battery. I would return your charger and try to charge them on the new one first. If you have the same trouble, then return the batteries for new ones.

Nov 26, 2010 | Ryobi Two 18V Lithium-Ion Batteries +...

1 Answer

Will a nicd charger work to charge lithium-ion batteries?


no, I would not try this. You can charge a nicd battery on a lithium-ion charger but not the other way around.

Nov 25, 2010 | Ryobi Two 18V Lithium-Ion Batteries +...

1 Answer

New Ryobi 18v lithium battery goes dead after a couple of seconds. Is there any solution other than returning it?


No, just return it, for the money they should give you one that works. It is common to get a defective Ryobi 18v lithium battery. I've had 2 out of 7 purchased that wouldn't hold a charge. But when you get a good one they work awesome!

Jan 24, 2010 | Ryobi Two 18V Lithium-Ion Batteries +...

1 Answer

Battery charges but is dead


The battery isn't any good. The charger is just going through it's regular steps. (I know how it is. I just bought two Ryobi 18 volt batteries for my Ryobi cordless drill, reciprocating saw, flashlight,
trim circular saw, combo set. $60 for two batteries)

Jul 15, 2009 | Ryobi Two 18V Lithium-Ion Batteries +...

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