bq20z45-R1 internal temperature sensor
I'm attempting to calibrate and use the internal temperature sensor on the bq20z45-R1 gas gauge. I'm going through the calibration process in bqEasy and I reach the point when I'm prompted to switch...
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Bq20z655-R1 with internal thermistor
I start my new prototype circut with using the Bq20z655-R1. I have not connected any external thermistors. I set as only internal thermistor in Operation Cfg A: Temp1=0, Temp0=0 but temperature is...
View ArticleSubmit primary cells for ChemID characterization
Hello,We are designing a battery pack around the 34z100 with primary cells for which no ChemID exists in the chemistry updater database. We would like to submit two cells to TI for characterization....
View ArticleBQ27510-G2 I2C NACKs everything
Hi,The device responds to neither its ROM-mode (I2C address 0xb) nor its not-ROM-mode (I2C address 0x55) address - both get NACKed.Are there any chip-external hardware issues that might cause this?Is...
View Articlebq78350
Hi ti Famelie,I am a student and I'm my bachelor's work I want to make a charging circuit for 15 eisenPhosphat cells.I'm going to do this; the bq76940 to take EVM.Alos to my circuit in an Autonhomen...
View ArticleBQ27510-G3, Bad battery ID
Hi,Can BQ27510-G3 detect a bad battery in this use case?Single cell Li-Ion battery is operating as UPS, for backup power only.3.65V nom., 5300mAh nom capacity, 19.3 Wh nom. energy.The design’s new...
View ArticleBQ2060A Re-conditioning and Reset
I have two queries regarding the communication with BQ2060A as given below. Please help to resolve it.1. After we get a reconditioning request, whether reset is required prior to the re-conditioning...
View ArticleQuestion on bq769x0 FAQs
In FAQs for bq769x0 (SLUUB41), it is written:10.2 What is the limit of VC15 (or the top used cell input) with respect to BAT?The maximum voltage between the top cell input and the BAT pin or between...
View Articlebq27510-G3 downgrade to G2 firmware
All,We are proceeding with the manufacturing of our product and initially, we had bq27510-G2 however, due to the time schedule and the availability of G2(out of stock) from our supplier, we had decided...
View ArticleAllinOne: Fuel Gauge, Charging and Protection
I am a beginner in regarding to Battery Power Management and I am a bit confused. I hope you can help me.I am interested in to control a 4S LiFePo4 battery pack, i.e. to monitor and charge the cells...
View ArticleBQ76940 does not respond to I2C
Hi TI experts,BQ76940 does not respond to any of the I2C commands. According to the oscilloscope traces, it does not generate ACK signal. (bus is not pulled down in the 9th clock cycle)I have double...
View Articlebq78350 product
I don't found the bq78350_xxxx.srec firmware file for bq78350...please help me
View ArticleGas gauge for 13S removable battery
Hey all!I'm looking for help in figuring out if there is a suitable chip for my use case. I have an electric bicycle with a removable 13S 47.45V Li-Ion battery, and a fixed 2.14mOhm low-side shunt...
View ArticleAdvice on circuit for 4 li-ion cells mounted in series without charging function
Hello everyone,I'm designing a system which shall be powered with batteries.I intended to use 4 individual li-ion cells (18650) placed in a holder. There is no charging function as the user will use an...
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BQ77910A Balancing Check
Hello TI Community,I have a Question. I develop a BMS for 10 LiIon Cells. My circuit diagram is finished. But how can I check at the first, initial start which cell gets balanced? Can I connect...
View ArticleBq34z100 Control and Block commands
Hi ,I wanted to know about how control command and its subsequent 2byte sub commands retrieve data.We are considering a code to send command 1 byte at a time to fetch the data.So if suppose i want to...
View ArticleUsing SLA battery with bq40z50 + bq24725A
Hi,We have designed the follow Li-Ion battery solution:-Charger: bq24725A + uController;-Battery Gas Gauge: bq40z50.It worked quite well, but now we have to change the battery from Li-Ion do sealed...
View Articlebq34z110 led modes
From Bq34z110 datasheet:The LED/Comm Configuration register Bits 0, 1, 2 are a code for one of five modes. 0 = No LED, 1 = Single LED, 2 = Four LEDs, 3 = External LEDswith I2C comm, 4 = External LEDs...
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Problem in bq Evaluation software with EV2300 device
Hi,We have used bq27200 battery monitoring chip in our customize design with AM335x. We are using 7800mAH cell in our product. I want to make bq27200 to learn actual capacity of this battery whenever...
View Articlebq78PL114, one led, SOC 100%
We use the bq78PL114S12 for a few years now.During last production, we noticed something strange with the LEDs. The first time we check the SOC status, only one led turns on. When we push the button a...
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