bq20z75 Low-Voltage Issue
We received some batteries back from our customer, none would charge and no voltage was present on the pack terminals. The packs were opened and the cell voltages were measured at 1.7 to 1.8V in all 3...
View ArticleBQ34Z100 battery capacity
Hi,I have some questions regarding battery capacity reading of BQ34Z100.Is it normal that the full charge capacity jumping up and down while charging or discharging if the battery hasn't gone through...
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Unseal Bq20z95
Hello,I currently work with the softwares BqMtester and the circuit Bq20z95When calibrating the BqMtester has sealed the circuit.Now what is normal, I can not read data from flash memory: I would...
View ArticleBQ34z110 with 4 Lead Acid batteries in series
Hi, I'm having some doubts about data flash configuration before starting STEP 7 & 8 of SLUSB55B.My current setup is 4 Lead Acid batteries in series and I want to monitor the 4 batteries with a...
View ArticleImproper behavior of DSG PIN in Bq34Z950
HelloI used BQ34Z950 IC to develop protection circuit for lithium ion battery pack 4s3p.But facing problem regarding discharge Mosfet Drive Pin (DSG) of IC. This pin goes high (to 16v) whenever...
View ArticleProblem with HPA169 and the "board offset calibration" procedure
Hi!I don't undertand the following point:Firstly, at page 5 of SLUA379E we can read :"The hardware for calibration is also simple. One current source, one voltage source, and one temperature sensor are...
View ArticleConstant current load
HiThe Chemistry ID selection discharge test seems to require a constant current load. There don't seem to be many such commercial devices around - which equipment are people using for this constant...
View ArticleIs there an ic available from Texas for balancing 12 series connected...
Is there an ic available from Texas for balancing 12 series connected supercapacitors?I need to charge them at 4A maximum at a constant voltage of 30V (12 x 2.5V = 30V)Thank you,Stephan.
View Articlebq28550 I2C Communication Problems
We are trying to establish I2C communication with the bq28550 Battery Gas Gauge and have been having some trouble. I'm personally new to using I2C, but I'm using some modules that we have used in the...
View ArticleINT-EV2300 VS EV2400
Dear ALL,I understand that the two controllers are different and interfaces as well.In terms of communication speed do you see improvements from the EV2300 to EV2400? I want to understand if a possible...
View Articlebq34z100 voltage reading
HiWe are using the bq34z100 for fuel gauging of a 16 cell LFP pack. Everything works fine, almost. For no external reason the battery Reading reads a low voltage, setting SOC=0%, remaining capacity = 0...
View ArticleFrom bq20z75 - to bq20z45 or bq40z50 for new Development.....
Dearall,For aLiFePO4application, high current pulse loading and lowaveragepower consumption between pulses, we are now using bq20x75V.160/1.80 with good results. For a new development of a...
View Articlebq28550 shutdown mode
Hi How to jump out of shutdown mode when the battery is first attached to the chip? I'm not using CFET and DFET for my design.Thanks
View ArticleDisappearing R_DIS and VOK
We have had several batteries that have been in use for months with he problem of R_DIS and VOK not set. They we set when the pack was built and sealed. If I send a reset (41) they will appear. What...
View ArticleBQ2084 V143 calibration
Hi,I would like to keep "CC Delta " and " Remaining Capacity" values after calibration.Currently, this values are reset after diconneting the battery from the gauge more than one minute.How to avoid...
View ArticleHow do I balance 12 series connected supercapacitors?
Is there an ic available from Texas for balancing 12 series connected supercapacitors?I need to charge them a 4A maximum at a constant voltage of 30V (12 x 2.5V = 30V)Thank you,Stephan.
View ArticleBqMAXIMO BqMAXIMUS Battery Management System
BqMAXIMO BqMAXIMUS Battery Management SystemAs a backgorund, we at Ather Energy are currently designing premium electric two wheelers for the Indian market. I am involved with developing the Battery...
View ArticleINT-Gauge Studio supported gauges
Hi All,A brief question: where can I find the list of fuel gauges supported in Gauge studio?ThanksNicola
View ArticleHPA169 HPA495 SENSOR TEMPERATURE ACCURACY PROBLEM
Hi!In document SLUU238B and SLUU397A which are document about user guide of calibration board by TI, you specified that we need a sensor temperature with accuracy of 0.1°C ! Why your calibration board...
View Articlebq27510 gas gauge data flash -- terminate voltage issue
Hi,I have a question about the bq27510 data flash parameter "terminate voltage".In data sheet, the "terminate voltage" was in "Gas gauging" class, SubID = 80 and Offset = 48.The default value is...
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