Part Number: BQ27Z561-R2
Other Parts Discussed in Thread: GPCCHEM, BQSTUDIO
Tool/software:
Hi,
I obtained ChemID using GPC-Tool.
There are multiple ChemIDs, but which one should I choose?
First of all, why are there multiple ones?
Chemistry ID selection tool, rev=2.54 Configuration used in present fit: ProcessingType = 2 NumCellSeries = 1 ElapsedTimeColumn=0 VoltageColumn = 1 CurrentColumn = 2 TemperatureColumn = 3 Best chemical ID : 222 Best chemical ID max. deviation, % : 2.36 Summary of all IDs with max. DOD deviation below 3% Chem ID max DOD error, % Max R deviation, ratio 222 2.36 0.66 2795 2.56 0.61 Max. deviations for best ID is within recommended range. Chosen best chemical ID is suitable for programming the gauge. Selection of best generic ID for ROM based devices like bq274xx Device / Family #1 Generic Chem ID Device/ Voltage/ Chemistry max DOD error, % 3142 bq27421-G1D: 4.4V LiCoO2 8.97 354 bq27411-G1C: 4.35V LiCoO2 10.42 128 bq27421-G1A: 4.2V LiCoO2 27.28 312 bq27421-G1B: 4.3V LiCoO2 35.82 Best generic ID 3142 Warning: Deviation for best generic ID is above recommended level for this device / family. Consider using another device, flash based gauge or RAM programming of custom ID. Device / Family #2 Generic Chem ID Device/ Voltage/ Chemistry max DOD error, % 1210 bq27621: (ALT_CHEM1) 4.3V LiCoO2 8.92 354 bq27621: (ALT_CHEM2) 4.35V LiCoO2 10.42 1202 bq27621: (default) 4.2V LiCoO2 12.98 Best generic ID 1210 Warning: Deviation for best generic ID is above recommended level for this device / family. Consider using another device, flash based gauge or RAM programming of custom ID. Device / Family #3 Generic Chem ID Device/ Voltage/ Chemistry max DOD error, % 3142 bq27426: (ALT-CHEM2) 4.4V LiCoO2 8.97 3230 bq27426: (default) 4.35V LiCoO2 11.26 1202 bq27426: (ALT_CHEM1) 4.2V LiCoO2 12.98 Best generic ID 3142 Warning: Deviation for best generic ID is above recommended level for this device / family. Consider using another device, flash based gauge or RAM programming of custom ID.
