"Cell Voltage correction is beyond allowed range"
I am a problem in last calibration step. Our design has 6 sets in series of 10 batteries in parallel. (60 in total) The batteries are common 18650 lithium ion cells. Thus we have 22.2Volts over the...
View ArticleBQ27542 charge cycles at 4.1V
Hello,We are planning to use the BQ27542 with our battery, but we have a question about design capacity. We'd like to charge the battery to 4.1V to increase the battery lifetime. We believe design...
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Do you know what may be cause that bq27531 software doesn't update...
Hi, I'm trying to manage one battery charge of 10000mAh, I'm using bq27531 and a EV2400 to communicate to the computer, the software that I'm using is the one that you download from the internet page I...
View ArticleBQ Studio Programming File and Data Flash Comparison
I'm using a BQ27742-G1. We are trying to figure out the programming script protocol using the golden image DFFS that we generated in BQ Studio. The safety subclass on our device was setup to have the...
View Articlebq34z100 unexpected SOC values
We use the bq34z100 battery gauge chip. We have built a battery block which consists of 56 Li-ion battery cells of 15.6Ah each. Battery block voltage is 135~234 Volts (nominal 200Volt) and discharge...
View ArticleBQ40Z50R1 error export SREC file
I'm using BQ40Z50 with EV2300 and BQStudio on a Win7 system. Communication works well, i can program the orginal SREC file and set up data flash. But when i'm trying to export the modified SREC i...
View ArticleOptimization Cycle bq34z100-G1
Hello everyone,I am trying to run an otimization cycle in my Lead Acid 12V 18Ah battery using the bq34z100-G1, but with no sucess.My first step was to set all the configuration parameters and gage...
View ArticleMeasurement rate of voltage, temp, etc in BQ34Z100-G1
In the datasheet it specifies the values for current and average current are updated every 1 second but does not provide an update rate for the voltage and temperature. I am reading via I2C and find...
View ArticleEV2400 software question
Hi Sir,EV2400 can support Win8 OS?If yes, can you share driver for Win8.Thanks
View ArticleBQ40Z60 charge LED
Hi,We want to use BQ40Z60 in our device to charge and fuel gauging 4S2P LiIon battery.We need to have "Charge LED" on our device, not percentage of charge, but only charge process.This LED will lights...
View ArticleDifference between bq28z610 and bq78z100
Hello,at first sight, the data sheets of the bq28z610 and the bq78z100 are fairly similar. The main difference that I was able to spot is the HDQ communications option. It is mentioned for the...
View Articlebq27531-G1 & bq24192 not charging
I have a design which includes the bq27531-G1 battery management chip and the bq24192 charger chip. This is part of a handheld device powered by a 3200mAh polymer lithium ion battery (the bq chips are...
View ArticleBQ27742 shutdown randomly fails
Hello, BQ27742 again... ;)I'm testing the analog shutdown functionality of the chip. However, sometimes the device fails to shutdown although I can see that the UVP bit is set an there is no charger...
View Articlebq27742-G1 inacurate full charge capacity
Hi ,I'm using the bq27742g1software to charge / discharge a "18650" lithium battery .I have the right chemID , but the Full charge capacity (FCC) is shown as 1000 mAh instead of 2600 mAh (design...
View ArticleDoes the bq27542EVM contain the interface to the PC
Hi. I just ordered the bq27542EVM. When reading through the documentation I was of the understanding it had everything in it to connect to the PC. The more I re-read the documentation the more I am not...
View Article[BQ34Z100-G1] abnormal finishing at during optimization Cycle.. (Update...
Battery : ICR18650-32A 3S4P(3 serial, 4 parallel)1. Write Chem ID2. Write Flash (attached Flash setting file)3. Calibration4. Optimization cycle.. (attached log file)(Please visit the site to view this...
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Procedure for newly installed BQ3060
Hello all.I somehow burned down my previous BQ3060 so I soldered a new one. I have saved the GG file from previous BQ3060. These are parameters which were set in factory which makes batteries for us.So...
View ArticleBq34Z100 changing SOC values
Hello,I'm using the BQ34Z100 with a 4S1P Battery Pack (2,6Ah / 8-13,2V / 1-30A).There were no problems with the calibration cycle and the golden image file. But afterwards at the tests I noticed some...
View Articlebq27741 i2c communications issue
I have some basic questions about I2C with a bq27741-g1. To read temperature, for example, the users guide says to use the 2-byte command code "0x06 and 0x07". Is this MSB and LSB, or LSB and MSB...
View ArticleSHA-1/HMAC authentication
I have below questions regarding SHA-1/HMAC authenticationa) The default plain text authentication key is 0x0123456789ABCDEFFEDCBA987654321 which is actually 15bytes and 4 bits, can you tell me...
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