AIUI, Ryobi make a wide variety of 18v cordless power tool and garden tools, etc. which have interchangeable batteries - designated as the ONE+ system. Is that correct?
Some batteries seem to be NiCad and others are Li-ion. Provided the right chargers are used, will all tools work with either type?
I have a couple of Ryobi drills (bought in about 2009) which have 18v NiCad batteries of type BPP-1815. Neither the drills nor the paperwork which came with them make any mention of ONE+. But the same type of batteries - which look identical to mine - are available via Ebay, and claim to be ONE+ compatible - see
What are the chances that if I buy a bare ONE+ Impact Driver, it will work with the batteries which I already have?