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Thread: XTS5000 low battery chirp

  1. #1
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    Default XTS5000 low battery chirp

    Having an issue with an XTS5000 VHF M3 Host/DSP 19.50.00 Flashcode 520001-000106-9 using an IMPRES PMNN4093A battery. On some channels when you transmit you get the low battery chirp and the battery display flashes. I have looked at the tuner and programming and cannot for the life of me figure this out. Current battery reading is showing Rated Capacity 80% with 2300MAH remaining. Have the issue even when fully charged. Battery has only ever been charged on IMPRES charger with FW V3.40. Battery only has 29 charges. The primary channel I use the radio on does not do it luckily but it is driving me crazy. Suggestions or ideas?

    Primary frequency pair I use: No Issues
    Tx: 153.935
    Rx: 151.475
    Tx/Rx PL: 123.0

    Examples of frequency pairs with issues:
    Tx: 154.860
    Rx: 159.2175
    NAC: 023

    Tx: 158.790
    Rx: 155.430
    Tx DPL Invert 155
    Rx DPL 155


  2. #2
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    Your radio may need the low battery alert threshold calibrated.


    Sent from my iPhone using Tapatalk

  3. #3
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    To echo on what Mars said, you have to place the radio on a 6.9V power supply and then calibrate the radio in Tuner. This should set the threshold. Make certain that the radio power supply if right on 6.9V.

  4. #4
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    If you don't have the gear to do this, I have the variable power supply/adapter from Motorola and the digital VOM to do the calibration. I can also offer a firmware update included with the labor fee.

  5. #5
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    or try to change another antenna ? mis-matched antenna will draw high cuurent.