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Can you use the new ryobi one 18 volt batteries with the old power tools with 18 volt x1.5 ah batteries, because i know that the new ryobi one 18 volt batteries are 1.7 ah, and vice versa.
Yes you can, as long as the batteries are the same style and fit the older Ryobi tools. The Ah rating is a capacity rating. The higher the Ah, the longer the battery will last so the 1.7Ah will just last a bit longer than the 1.5Ah batteries, but yes you can use them on older 18v Ryobi tools. I do it all the time.
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If they both show charged, they are unlikely to be incorrect. You can test the contacts of the batteries with a test meter, and you can also test the charger output.
If they don't work in a tool, the tool may have failed. Having said that, they do appear to have some history of this. Check out the videos.
Well I was having the same problem and I found out that the p108 and p109 cut power when to much of the battery power is being used, kind of dumb just to say the new batteries last 4x longer( its because u can't use all the torque of the impact). Fortunately I've found out that the older batteries don't cut power such as the p104 p103 and the black ryobi batteries without the gauge indicator work the 1/2 " impact without cutting power
take a hammer, and apply force. These batteries dont last forever... but i am serious about the hammer... you may be able to free up whats inside (if you know how a batterey works.)... also apply heat.. try to hit it from all angles than slam it down on the back and leave it sit... than try. I hope this works for you my dewalt batteries over the years have don this, and it works.. but BTW. it wont hold a charge for very long anymore.. the battery is pretty much garbage.
you would also need to check the voltage of the batterys they should be at least 18 volts (19 prefered)
then if the batterys do not show charged you would need to make sure the battery charger is putting out voltage.
After that contact your closest Ryobi service center we would check that for free to let you know what you need, I am sure you local place would do the same.
Ryobi batteries are specific to each Ryobi model, so please write down which model number or the original battery part number you have. How old are the batteries? I had the same problem with many bateries I had at home, like cell-phone batteries and also some power tool bateries. Did not have any Ryobi power tools tho, so don't hold me acountable if this doesn't apply to your hardware:) Many batteries have the "memory effect" which means that if the battery was not completely empty when it was set to recharge it might now only recharge to the level it was emptied to, so for instance if you used the power tool for 10 mins and the battery emptied to, lets say, 90% capacity, it might occure that the next time you recharge the battery it will only charge to it's 90% maximum...doing that many times lowers the maximum recharge capacity. As I heard the new Li-Ion batteries do not have this problem. I hope this makes some sence as my english is not that good and it was a bit hard explaining my thoughts:)
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