Over Temperature
Hello,I was testing to make sure that charging would be interrupted if the temperature went too high. I used a hot air gun to heat (just) the thermistor I will be incorporating into my battery pack...
View ArticleClik here to view.
bq20z95 FETs
Hello,The charge FET on my bq20z95 appears to be open, preventing me from charging my pack. I'm not sure how to recover from this state, is there a command for clearing PF flags, such as the...
View ArticleClik here to view.
BQ34Z100 LEDs button fail on discharge
Hello!Batt is 8800mAh 4s4p. Following problem:During the charge, remaining capacity is displayed normally on the LEDs by pressing the button and in bq Eval Soft. But then the discharge current is...
View ArticleQuestion about a calibration bq20z90 (and other)
Dear TI specialists, please tell me in which the document can be found the describtion of additional commands and registers that are used to calibrate the voltage, current and other parameters? I have...
View ArticleBq2016 General Questions
Hello everyone,I have a few questions about the Bq2016 Fuel Gauge IC that hope someone may assist me on.The first questions I have is about the sense resistor. I am using a 14.4 V NiMH rechargeable...
View Articlein field update of BQ34z100
HiI currently have a working Bq34z100 battery monitor project which can be successfully programmed via the bq MultiStation Tester. Now i'm looking at the possibilty of being able to update its...
View ArticleBQ34Z100
I am using BQ34Z100 which count 1 cycle after accumulating 3400mA.If I put the battery out and in my application - handheld electric driver - at the state of 3000mA, what is the right counting of 1...
View Articlebq27520 how can I restore the original file on the chip.
In order to simulate testing of a virgin board, I need to be able to simulate a virgin BQ27520. Is there a method to restore the device to an as purchased state, prior to programming the battery guage...
View ArticleClik here to view.
OCV value read
Hi,I'm testing bq27520G3EVM learning cycle with bqEASY. At the end of charge, FC bit is set. During relax, VOK is cleared but App Status never change to 01. Slua544 "Generate Golden Image" shows that...
View Articlebq34z100 for High Voltage Application
Hello,We are planning to use bq34z100's to gauge 32S 11P Li-Ion pack, which gives the bus voltage around ~120-130V nominal. Each Li-ion cell is 3000mAh and can discharge 6A of current at maximum.Is it...
View Articlebq27421 Watchdog Reset
Hi,I am having an issue with the application example on page 11 in the bq27421-G1 Technical Reference (Literature Number: SLUUAC5). I am able to successfully update the design capacity bytes and I...
View Articlebq40z50 in battery-backup type application with LiFePO4 cells?
I just finished reading SLYT528 about the improved IT algorithm and settings for the bq20z45-R1 when balancing LiFePO4 cells in a battery-backup application and wanted to know how the bq40z50's IT...
View ArticleEV2300 64-bit drivers available for download
The "unofficial" 64-bit Windows drivers are now available for download from the Files section of the Battery Management forum.Here is the direct link:EV2300 64-bit Windows driversWhy are they...
View Articlebq27541 I2C communication problem
We are designing a stand-alone device that our customers can use to track the health of their batteries. We are trying to interface with a battery that uses a bq27541 as its fuel gauge. We have had...
View Articlebattery wont charge in laptop
hie therei have several batteries which after full reset and cell replacement(i replace with used cells from working batteries) only charge using an external power supply but when i put them in laptops...
View ArticleDesignCapacity() is correct but FullChargeCapacity() is incorrect
Hi,I am using a BQ27421 with a 120 mAh Li-Ion Polymer battery. I am programming the Design Capacity to 120 mAh and the Design Energy to 444 mWh using the TI CC2541. After programming, the...
View ArticleClik here to view.
BQ27410-G1 Wrong SOC and mWh calculation
Hi,Currently i'm using BQ27410-G1 while life testing 5 800mAh Lithium Polymer batteries, by charging and discharge the batteries continuously until >500 cycles or more is reached. The batteries are...
View ArticleBQ27410 Cycle counter
Hi,I'm using the BQ27410 Fuel Gauge in my design, and now I'm going a bit deeper into designing.My question is I have been using the Fuel Gauge for some time now, but I haven't been able to get the...
View ArticleRemplacement of resistor R25 of HPA169 Board
Hi !I want to know if I can replace the resistor R25 in HPA169 board in order to have a current of 4A instead of 2A ?What's the width of tracks where flows the 2 A ??One more question :Why 2A ??Best...
View ArticleUnable to install bq34z100 Evaluation Software for EV2300. Fails on bq80RW.ocx
Hello,I recently purchased the EV2300 module for use with bq34z100EVM. Also, I downloaded the bq34z100 Evaluation Software (Rev. A) from the website and installed it via 'Run As Administrator'. I'm...
View Article