determining {HEAD ~ the capacity} of {TAIL ~ the rechargeable battery} when the discharge level at which the capacity of the rechargeable battery can be learned is reached 
of
determining { HEAD ~ the capacity } of { TAIL ~ the rechargeable battery } when the discharge level at which the capacity of the rechargeable battery can be learned is reached
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH