Black Panel Temp(C) 183 3 Average Discharge Voltage(V) 135 2% Average Discharge Current(A) 16 2% Table 5 Criteria of Discoloration 18) Grade Criteria Discoloration falls under discoloration gray scale No.1 or 2 exceeds it. scale No.2 Discoloration falls under discoloration gray 3 Discoloration falls under discoloration gray scale No.3