bq20z60 - StateOfHealth register vs. Sealed mode
Hi,we are using a battery pack which contains the bq20z60 as its fuel gauge. I am wanting to read the extended SBS command StateOfHealth register, but the device is in the sealed mode from the battery...
View ArticlebqEASY step 2B "maximum taper current"
If the charger tapers the current from 1.2A down to 50mA what is the maximum taper current? Is it 1.2A or 50mA or slightly above 50mA?What is this value used for?My guesstimate is it is used for...
View ArticleBQ27541-G1 Pack Configuration register differences in GaugeStudio and...
I used slua656.pdf to fine tune the .gg file. When I look at the registers in GaugeStudio v1.3.12 the Pack Configuration registers are quite different.Which one is the correct one?I need an answer fast...
View ArticleChemUpdater for BQ34Z100
I'm searching for the downloadlink to the newest chemUpdater for BQ34Z100.My older links are not working anymore and on the TI page for the Z100 I don't find a download button.RegardsChristian
View ArticleBQ34Z100 and BQ77910 for Lithium Titanate Oxide cells
Hi guys,I have to design a go-kart battery pack with lithium titanate oxide cells. This battery pack must have BMS for estimating its SOC and its SOH. The BMS will have to have charging overvoltage...
View ArticleBQ27421 - Enter to dead lock state
Dear Sirs;We are using the BQ27421 GAUGE, part number BQ27421YZFT-G1A, in one of our projects. In one project we are using the radio module RF-DATA Model KYL-200L, the gauge began to present problems...
View ArticleUsing BQ34Z100 with 12 NiMH cells
Is it possible (or appropriate) to use the BQ34Z100 for 12 NiMH series cells. I have seen some statements that this part can be used for NiMH, but there is no mention of this battery type in the...
View Articlebq77908A: Questions about charger detecting and CHGST connection
We have an application for a bq77908A-protected pack that would use both maintenance (topping off the pack) and current taper limit (stop charge at 0.1C amps) chargers. Both charge and discharge...
View Articlebq34z100 minimum sense resistor.
Hello, I'm developing a 10 cell LIB battery pack using the bq34z100. Since I'm worried the heat, I want to use the 1mohm to sense resister. Is it available under the following conditions? - sense...
View Articlebq40z50 unresponsive
I mistyped a command and sent a 0x0033. It is completely unresponsive now.Any ideas on how to get it out of whatever this mode is?Thanks.
View ArticleCalibrating bq34z100PWR for a 5 cell series battery
I am having a hard time calibrating a 5 cell series battery. The battery is 185Whrs, 10Ahrs.I can enter 10Ahrs in the design capacity in the data flash but cannot enter 185Whrs.I am attaching the .gg...
View Articlebq76PL536A High cell count string
Hello there,We intend to use bq76PL536A in a 30S1P 20Ah LiFePO4 pack for balancing. The total string has 6 packs, which means we have 180 cells in serie. Due this configuration, I have the following...
View Articlebq20z65 communication errors
Hello,We are using the bq20z65 for a simple 4s battery pack. The design/layout for this simple battery is basically right out of documentation provided by TI. On the boards we just received, I...
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[BQ77910] Writing Flash data to EEPROM
Hi,We are using BQ77910 for Protection in one of our projects.My main query is related to programming/writing the data to EEPROM from the microcontroller.I followed this flowchart and wrote the code...
View ArticleProblem calibrating the bq27425-g2: fails on checksum verification
Hello,I am trying to calibrate my bq27425-g2 (connected through i2c line to my controller) using the attached file.It seems there is a problem with the time it takes to write the data to the chip.I...
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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 ArticleProblem in reading capacity
Hi, We are using bq27200 with Samsung 2500mAh Battery for our Custom board. I am able to read battery capacity and other parameters.But Help me on how to calculate battery capacity once after resetting...
View Articlebq40z50 Mfg Status Init
Found another discrepancy in the TRM (I think).Page 143 lists the bit fields for Manufacturing Status Initialization. It shows bit 5 as LED_EN and bit 9 as Reserved.But Battery Management Studio shows...
View ArticleHow do I set the chemistry ID in bq3050?
This is typically done in the BqEasy window of the bq evaluation program. However, there is no BqEasy tab when connected to the bq3050 gas gauge.
View ArticleBQ27425-G2 Sample code
Hello,Someone could please send a sample code for communicating with the component BQ27425-G2 with I2C?Thank you,Ido
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