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fuel gauge
Related Posts

  • Forum Post: Re: Fuel gauge precision

    Richard19439
    David, our current solution uses BQ77PL900 for battery safety. It a custom design by a vendor. The fuel gauging is done with an Atmel microcontroller ADC, and I don't have very much detail. The question is whether or not a redesign is advisable. (BQ78PL114) High-Resolution 18-Bit Integrating...
    on Dec 3, 2009

  • Forum Post: Require softeware to evaluate BQ2010 (EV2010.exe, AP10A.exe)

    Deckerg
    I'm trying to find software to read and write to the BQ2010 fuel gauge. The datasheet for the EV2010 evaluation board indicates that there are two programs that can be used to interact with the fuel gauge: EV2010.exe and AP10A.exe. These programs don't appear to be available for download from...
    on Nov 20, 2009

  • Forum Post: Fuel gauge precision

    Richard19439
    . We are testing a battery pack with the configuration 6S1P and the chemistry Li-FePO4. For the cell type there already exists a chemistry file SLUA372R LiFePO4/carbon 0404 A123 Systems: APR18650M1 (1100 mAh) What precision can the charge integrator (coulomb counter) achieve? In our...
    on Dec 2, 2009

  • Forum Post: NiMH Fuel Gauges

    Cosmin P
    Hello Team, Is the NiMH chemistry consistent enough that an 'impedance tracking' approach would be possible to implement? Thank you
    on Dec 23, 2009

  • Forum Post: Re: Gas Gauge for VRLA & BQ24450

    dMax
    Hi Alfonso, The bq2019 and bq2023 are actually chemistry independent and will work fine with lead acid batteries. The datasheet says "ideal for Li & NiMH" but they can be used for any chemistry. They are simple battery monitors which track voltage, temperature, and count coulombs. It...
    on Jan 14, 2010

  • Forum Post: 4 Cell Removable Battery Fuel Gauging Solution

    Tom47637
    Hi Everyone, I'm looking for a solution that can fuel gauge a 4 Series Cell LiPo battery (10000mAh, 14.8V) and report pack information over SMBus or I2C. However the battery is removable and will be charged externally, furthermore the cell taps are not accessible. I've been looking through...
    on Apr 16, 2010

  • Forum Post: Re: accessing system data in bq20z65

    SW5307
    We do have an app note with sample C code for the MSP430 to demonstrate communication with our single-cell fuel gauges (using I2C and HDQ). Here is a direct link: MSP430 Microcontroller Software for Handheld Fuel Gauge & Battery Authentication For SMBus sample code, please find it here:...
    on May 20, 2010

  • Forum Post: BQ27X00 Fuel Gauge has NAC freeze, even though voltage and current are still changing, EDV1 flag does not trigger

    Alex Dunfield50166
    Hi, I have a fuel gauge in a battery pack, and have noticed that during discharge the NAC (nominal available capacity) decreases gradually from the starting value of about 1500mAh until it reaches 560.13 mAh, and then it stops updating. However, the voltage is still at 3.3V, and the current draw is...
    on May 14, 2010

  • Forum Post: 2009 Battery Management Deep Dive - FYI

    BatteryBorne
    We will be hosting our 2009 Battery Management Deep Dive in Dallas the last week of October. Keep your eyes on this thread for further information.
    on Aug 27, 2009

  • Forum Post: Re: Gas Gauge needed

    dMax
    Hi Alfredo, Including a gas gauge function in your project means that you could accurately know the remaining capacity (in mAh), state of charge (SOC in %), run-time, and many other details about your battery condition. Some "smart" batteries such as those in your laptop computer have a...
    on Oct 11, 2010

  • Forum Post: Push Button Fuel Gauge for 12.8V LFP 4 Cell Battery Pack

    Ryan Brown
    HI, I am needing a simple Push Button Fuel Gauge for a 12.8V 4 cell Lithium Iron Phosphate Battery Pack. What are my options? I would love to just have a board that you can connect to the + & - of the battery and then you can simply push the button see the battery capacity. What are my options...
    on Oct 1, 2010

  • Forum Post: BQ275xx and impedance

    Sebatien McKenzie-Faucher
    My design requires the battery to be located 6 inches away from the main board. The link between the battery and the main board, will be awg22 wires with 2 connectors. Therefore the impedance between the battery and the main board will probably vary depending on wires, contacts, etc. My questions...
    on Nov 5, 2010

  • Forum Post: Where is the "bq27x10EVM For Dummies" guide?

    Barry Klein
    I have the bq27x10EVM wired to the EV2300 I2C USB communications unit and the software loaded and operational. Thing is, I don't understand the process of evaluating the bq27210 part using it. I am using a 5000maH LiPoly battery. I have an electronic load and a charger available for connection...
    on Nov 20, 2010

  • Forum Post: RID on bq27501

    Roger Yttervik
    Hi We are implementing your bq27501 battery monitor. We are having problems with the RID function... The monitor does not seem to react to the change in RID resistor. Could you please explain when this test is done and how the test is performed. ie.... Is it done only apon battery insertion or a reset...
    on Jan 12, 2011

  • Forum Post: Trouble with BQ20Z75-V180

    Wojciech Rokacz
    Hi. I have problem with BQ20Z75-V180. Before I use the newest version of IC BQ20Z75-V180 I use version BQ20Z75-V160. 1. Software BQEV 0.9.59 does not recognize version IC V180. 2. In software BQEV 0.9.59 I could not find .encr file for this device V180. 3.The Golden File form V160 does not work properly...
    on Jan 13, 2011

  • Forum Post: monitoring of vrla batteries at telecom sites

    srikanth komara
    hi, can any please give me solution how to monitor 24(2volts) vrla cells in telecom sites and please do provide me the calculations involved in voltage, current and temperature measurements.....can i use BQ2060 fuel guage if so a single bq2060 guage monitors 4 cells at a time,in that case can i take...
    on Apr 21, 2011

  • Forum Post: Re: RSOC drop at the begining of discharge in BQ78PL116 (or BQ78PL114)

    Ran Aloni
    thanks for the reply. we had a holiday... :-) my discharge rate was 6 A , while C = 12Ah I will create a log file that documents the event by tomorrow. here is the log file from which I invoked the AUX file. (Please visit the site to view this file) thanks
    on Apr 26, 2011

  • Forum Post: BQ20z40 / BQ20z45 Qmax and Ra error

    Ragnar Wallebom
    We have batches of BQ20z40 and BQ20z40 R1 where Qmax increases and Ra impedance values decrease unexpectedly. The battery is not used much or not at all. 2S2P with 2,4Ah LiIon cells. => 7,4V/4,8Ah nominal Some information from read out Flash file: Cycle Count = 5 CC Threshold = 4800 CF MaxError...
    on May 19, 2011

  • Forum Post: 8 Cell Battery testing

    Leethal
    Hi, I use 8 cell Li-Ion batteries(29.6V) with only the 2 power leads avalilable. I would like some feedback as to the best way to monitor the AH capacity. I can, I imagine use a small value series resistor with a load and monitor this with an ADC, log the data and calculate the area under the curve...
    on May 19, 2011

  • Forum Post: EV2300 Rant and Wish List

    Philip Liberatore
    Hi, I have been using the EV2300 in a number of custom test applications. I understand work is underway on an upgraded EV2300 module (EV2400?). These are some functions I would like to see in the DLL driver interface library. 1. Change the default integer lengths to 32 bits instead of the current...
    on Feb 16, 2010

  • Forum Post: bq20z95 stuck with no communication please help

    Roi Ofer
    hello i have 2 question: 1. i am trying to load GG file into the battery pack i followed the istruction in the "Using bqTester single site software" in section 4 - creating golden image, i programmed the SENC file , then sent 08 word to ther SMBus . now i cannot read or write to...
    on Jun 9, 2011

  • Forum Post: bq20z65evm first run problems

    Frank Thomas
    Hallo, I just got my bq20z65EVM board for evaluation. What I first did was that I connected a charged LiPo battery (2 outputs: +/-) to the 1N und 2P (and shorted the other 2P..4P) to pick off the respective voltage (8.2V) at the pack+/pack- connector but it didn't worked. So what did I wrong or...
    on Jun 13, 2011

  • Forum Post: bq20z65EVM CHGFET and DSGFET Quick Question

    Nicholas Alunni
    Hello, I noticed that when I'm discharging through the EVM the CHGFET and DSGFET are on, when I thought it would be just the DSGFET. I noticed that when I'm charging through the EVM the CHGFET and DSGFET are on, when I thought it would be just the CHGFET. Can someone please explain or...
    on Jun 17, 2011

  • Forum Post: Using N channel FETs instead of P channel FETs in BQ78PL116

    Ran Aloni
    Hi all, I'm encountering problems of massive heating, when using BQ78PL116, one of the obvious solutions is using more FETs in parallel, in the application notes TI is using P channel FET, which for my voltage and current are very expensive and have small variety. can someone offer a...
    on Jun 16, 2011

  • Forum Post: BQ20z45-R1 MOSFET control

    BicycleRepairMan
    Hi I need to be able to control the charge and discharge MOSFETs when the fuel gauge has been sealed, is there a way of doing this? The ideal functionality is a SMBus software SYS_PRES function or allowing the FETControl command to be used when the battery is sealed. I have a BQ20z45-R1 EVM and a 4S...
    on Jul 5, 2011
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