BQ20Z95 Calibration
Our battery pack is using a BQ20Z95. Our product needs to be able to reset the max. error using a specific calibration routine. The problem is that all we have are brand new battery packs with the...
View ArticleBq20z655-R1 with internal thermistor
I use only internal termistor. My configuration the device is Operation Cfg A: Temp1=0, Temp0=0. Temperature is still 300,95degC. Is any additional configuration the device?
View ArticleChemistry ID
Hello,We're having problems running the MathCad chemistry id script. Could someone work out the Chemistry Id from this discharge Cycle.Regards,Niro.
View ArticleChange load select after Golden Cycle
Hi, I use BQ27510-G3 with a Golden Image. TimeToEmpty log shows a straight line but too high at the beginning of the discharge (+40 min over 6h) to end at a good 0 min. In result, TimeToEmpty minute is...
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bq76pl536A and 105 cells in seires
Hello so happy to have this forum :), please find attach document.We're designing a 105S lifepo4 battery bms, in fact there are two in series *total 210s*, but SPI is going to be separeted.then one...
View ArticleImpedance Track enabled laptop battery communication freeze
Hi,I am running some tests on a laptop battery pack which has bq20z955 chip inside. Sometimes the SMBus communication with the pack ceases to work after the test has been running for some time: the...
View ArticleBq34z100 Cell V at ChgTerm?
I have a question about the Impedance Track learning Cycle on the Bq34z100. Ok I'm doing a IT learning cycle by entering 21 into the control box. I'm starting with a discharged battery that has sat...
View ArticleBQ2084 unseal problem...!!!
Hello...!!!is it possible to unseal the BQ2084 by communication?I was set the unseal passwords before seal it by EV2300 tool. I can not find how to unseal the BQ2084 and have to close this project...
View Articlebq27510-g3 qmax update ko
Hi, for 3 months I am testing learning cycles on EVM board with no success. Now I am trying on the final system but I can't get qmax update after charging and relax during learning cycle.I use...
View ArticlePlease suggest an IC for 15V Li Battery Pack Fuel Gauge with SBS support
Hello,1. I am using a Li Battery Pack 15V to operate a Single Board Computer (SBC). The SBC supports Smart Battery System (SBS) interface- SMBus.2. I am looking for some solution / IC for monitoring...
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 Articlebq20z45 evm blocks charging current
I have the bq20z45 evaluation module. I connected it to my battery pack and a DC voltage supply to see how much current will be drawn for charging the battery pack. The test points of the evm (2.5Vreg...
View ArticleGetting started questions for BQ34Z100EVM
I am considering using the BQ34Z100 to monitor a 48V LiFePo4 pack used for an electric bicycle. I have purchased a BQ34Z100EVM and EV2300 and the time has come to open them up.I have a couple of...
View ArticleBQ27741 questions
hello, I have a few questions about the BQ27741 chip:1. what is the best resistance for the sense resistor if my max current is 10A? The datasheets don't seem to discuss it. The reference design...
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bq30z554-R1 Schematic in datasheet
HiI have question about bq30z554-R1 datasheet.1) What is bq29412? Is bq29412 4-cell version of bq29512?2)What is this parts?Regards,PAN-M
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Battery Detection BQ27510
Hello everyone,I was hoping someone would be able to help me out regarding battery detection for a BQ27510 on the BI/ TOUT pin.I am using the evaluation board and have managed to be able to communicate...
View ArticleEV2300 Connection Issues
Hi,I'm working with the bq27500 gas gauge and am trying to use the EV2300 to interface with it. At first we had some driver issues, but eventually got it working with a VM with WinXP. For a while we...
View ArticleBQ27421YZFT-G1A - learning cycle steps
Hi,I am using Lipo battery in my product. Right now working on learning cycle of BQ27421 using gage studio V1.3. I referred "SIua597.pdf" but not able to get exact steps for learning cycle specially...
View ArticlebqEasy support for multiple bq devices
I recently installed the bqEasy software for the bq30z554-r1 chip. I notice that it overwrites the existing bqEasy files for the bq20z45 and bq20z65. After I close the bqEasy program and reopen, the...
View ArticleBQ76PL536 active cell balancing and balancing current limit
Hi,im working on a Li-ion battery management system with active cell balancing.I want to ask if it is possible to use BQ76PL536 for active cell balancing and the balancing current limit of it with...
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