Compatability issues with new Ryobi Lithium Ion Batteries

I recently bought the new Ryobi Lithium Ion Drill & 2 battery set with the torch. I have an old Ryobi One + drill and batteries but the batteries were on their last legs. I prefer to use the old Ryobi One+ drill with the new Lithium Ion battery. The old Ryobi One+ drill has more settings. However, I've noticed that if it stops or gets caught during operation and stops then it won't restart again at all. I find I have to place the Lithium Ion battery into its charger for a minute or two to make it power the drill again. Is this some sort of safety measure or is something wrong with this combo? From all comments I've read about this new Ryobi it's supposed to be very compatable with the old One+ products. Any suggestions or advice, please?