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Cell Tester Li-Ion 18650: Device for Cycle Fatigue, Charge/Discharge Parameters, Capacity Graph

radoslav006 4488 5
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  • #1 16967423
    radoslav006
    Level 12  
    Hello,
    I would like to ask if anyone can recommend a ready device with which I could test Li-Ion batteries in 18650 format against cycle fatigue. I need to throw a few such cells into such a device and set the charging / discharging parameters (e.g. 0-100%, 1.5A charging, 3A discharge) and let such cycles be carried out e.g. up to 80% reduction of the initial capacity (stop condition). The main information that interests me is that I would like to get a graph of cell capacity vs. number of charging cycles.
    Summarizing the requirements:
    - configuration of charge / discharge levels
    - battery capacity measurement
    - counting the number of cycles
    - setting the stop condition
    - some computer interface / memory stick or whatever

    Have any of you encountered such a device? Enjoyed? Can recommend?

    best regards
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  • Helpful post
    #2 16975108
    aaanteka
    Level 42  
    Dynamic Battery Simulator 2281S-20-6

    Keysight N6705B DC

    Keithley Series 2300 Battery Simulating DC - model2306,2308

    Keithley 6060B-J08 Special Order Electronic Load

    Cadex C8000 but also Cadex C7000 series

    Rigol DL3000 Series DC Electronic Load

    possibly
    ACCUMASTER C5
    Spoiler:
    (o Integrated Datenlagger for saving the course of charge / discharge curves without a computer.
    o Precise setting of parameters such as Delta-Peak, end of charge voltage, end of discharge voltage, current
    shutdown, maximum battery temperature, etc.
    o Battery temperature control with a thermal sensor.
    o USB connector, used for: Firmware update, reading datenlooger memory, datelogger on a computer, remote control
    a device with the ability to set your own charging-discharging program independent of the charger programs.
    o USART-TTL connector for remote control of the device using a microcontroller.
    o Indicator of the various set and defined parameters during the service process as well as the resistance of the current chain
    "Rechargeable battery - charging cable and charge-discharge statistics." )
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  • #3 16984352
    radoslav006
    Level 12  
    Thanks for the answer, let me now look at the prices and possibilities.
    I have a question - did you use ACCUMASTER? Do you know what the UART control looks like? What can be controlled and how?
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  • #4 16989771
    aaanteka
    Level 42  
    Virtually full support - virtual panel of the device. Accumaster can be connected to a computer via the USB connector. But, it is best to ask about the current functions of the given distributor's software of the device from which we are going to buy Accumaster. Recently someone offered me the product "ALC 8500 Expert with PC software", but I can't say anything about its parameters.
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  • #5 16989899
    radoslav006
    Level 12  
    Mhm, I get it.
    However, I need a discharge from 7A, so I probably need a 10A range. Preferably several channels. I found something like the EBC-X0510, I'm only worried about the quality of this device .. Some Chinese manufacturer.
  • #6 16990738
    aaanteka
    Level 42  
    Exactly. From experience I can say that Chinese products for modellers look good and function well. Someone even had USB controls and presentations for a PC. Their advantage is a fairly moderate price with quite good parameters. And of course, the fact of their development specifically after the popularization of Li-Ion cells on the market, and not the adaptation of structures from earlier technologies. Perhaps you should ask at some modeling forum or an electric bike forum. It's a common topic there. :D
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