BQ20Z95, Lifetime data update period
I am looking for an explanation of when the BQ20Z95's lifetime data. Using the 'bq Gas Guage' application I have configured various lifetime parameters e.g. max temperature is set to +10 degC. I have...
View ArticleBQ34Z100-G1 current returned message format
Hi, I'd like to know what is the format of the response message for the 0x0A command (AverageCurrent), regarding to the sign. When discharging, the current is negative, and when charging, current is...
View ArticleHow to determine the result of the Calibration for BQ20Z95 while in...
Hi TI Support,I'm working on developing an automated test system for our batteries. We use the BQ20Z95. We've discovered that the temperature reading returned from the battery is not a good indication...
View Articlebq78350-R1 SOC estimate after reset
Hi all,I am using the bq78350-R1 to determine SOC. I want to know how different reset conditions affect how the chip determines the SOC.On a power cycle (connecting to the battery) the chip uses the...
View Articlebq34z100g1 goldenfile
Hi AllIhave a question.I have used the EVAL board to go through the optimization cycle and the my max error rate is at 1%I have loaded all the chemical files etc before the optimization cycle,After all...
View ArticleWhich Gauge to choose for measuring a CR2 abttery between 2V and 3V
I am looking for a solution to measure the statust charge of a CR2 battery where we have 2 threshold (2.32V and 2.08V) triggering a change of LED status (and we need to make blinking those...
View ArticleBQ34Z100-G1 -- CC Gain and CC Delta Calculation
Reading through the SLUA640B document it describes a way to calibrate and calculate the appropriate values for the ccGain and ccDelta values. But in the bq34z100-g1 datasheet in section 9.2.2.1.4 it...
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Programming BQ27510-G3 with PIC33ep512mu810
Hallo E2E Community,I am an electronics technician in education and I need some help.First of all I use the PIC33ep512mu810 uC. The Program is coded on MPLAB. I want to monitor three Batteries...
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BQ20Z90 losing track
Hi Folks,Our customer has an issue affecting some of their bq20z95 based battery packs in the field. There is a leakage current path that can develop in the cell interconnects within the battery pack....
View ArticleHow to export the software of the BQ40Z50 host computer and configuration...
I have a project need to use the BQ40Z50-R1 chip to do the battery management system, but in the official network did not see the use of the host machine instructions and export profile, whether to...
View ArticleNiMH 3S2P System - Using bq34Z100-G1 with bq24401
I'm currently designing a NiMH battery system. The system would have two 3S packs connected in parallel (3S2P). Ideally I would like have a protection, gas gauging and charging features all...
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bq40z50 AvgTTF & AtRateTTF Calculation Issue
When reviewing the SBS fields for AtRateTTF (0x05) and AvgTTF (0x13) during charge, I notice some odd behavior on the bq40z50. Even though RemCap was less than 1Ah, and FCC was about 18Ah, when...
View ArticleEV2300 not able to recognize BQ40320 cannot program
I have a smart battery that I am trying to qualify for one of my clients and it uses the BQ40320 GG.I need to access the battery using the EV2300 module to change the E4 charging parameter to Long Life...
View ArticleIT enable may have bricked my BQ34Z100
things were fine, then I tried going into learning mode and some "stuff" happened. Since then I can't make any changes to data mem.I think this thread:...
View Articleself calibration of bq27520-g4 Gauge
Hello,We are working on testing of battery fuel gauge bq27520-g4 chip-set with 18650 Li-ion Battery (Panasonic cell) and we have following queries.does bq27520-g4 support self calibration or not?Do we...
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bq78350-R1 - ManufacturerAccess() - FETControl
Dear TI experts please, please help!!!I would like to understand whats going on on the SMB-Bus between master EV2400 (USB-Module) and slave bq78350-R1 on my EVA-Board bq76930EVM.(bq78350-R1 talks to...
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Reverse charger protection
1. I have to give reverse charger protection for battery management system in which N-channel mosfets are in ground path.2. Attached is the ckt for bq40z50 in which N-channel are on +ve path i.e Q2...
View ArticleRecovery of bq40z50-R1 OverChargingCurrent() Protection and...
The recovery condition for OverChargingCurrent() Protection in TRM =>This protection is designed to recover by a discharge event; therefore, CHGC:Recovery should be set to a negative value in data...
View Articlebq27421-G1 threshold
HiIam using bq27421-G1 fuel guage in one of our project.Please help me on the below queries1. Need to increase the set threshold (default 10%) to another value. I have found that its belong to the...
View Articlebq40z50-R1 OverChargingVoltage() Protection
The trip condition for OverChargingVoltage() Protection is:Pack pin voltage in DAStatus1() continuous ≥ ChargingVoltage() + CHGV:Threshold × Number of series cells for CHGV:Delay periodBecause default...
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