Results 1 to 3 of 3

Thread: What's inside an IMPRES Battery, and the charger? Here ya go

  1. #1
    Join Date
    Feb 09, 2013
    Posts
    48
    Thanks
    23
    Thanked 10 Times in 8 Posts
    Country: Finland

    Default What's inside an IMPRES Battery, and the charger? Here ya go

    Hello,
    I bit the bullet and connected the waris-series WPLN4199 charger to the DS9490 USB reader.
    Two chips, a battery monitor and eeprom came up:
    DS2438, shows temperature and voltages, also some parameters in the memory.
    Voltages:
    Ch0: 8,27V
    Ch1: 0,1..0,11V (fluctuating)
    Ch2: 0

    Clock:
    Back at the 70's..

    In the memory:
    Status/Configuration:
    07

    Temperature/voltage/current:
    50 17 0A 00 00 00

    Threshold:
    40

    Elapsed timer meter:
    B4 8A 50 0E AD

    Current offset:
    18 00

    Disconnect / End of charge:
    0D 8A 50 0E 6A AC 4D 0E

    User main memory:
    C8 01 01 00 00 C7 53 50 09 2A 34 FF FF 2B C0 71
    FF FF FF 01 89 D8 FF FF AF FF D9 0A 0C 36 00 00

    User memory / CCA / DCA
    BB 0F 78 A1 01 02 E2 01



    The eeprom DS2433 shows
    scratchpad:
    8D C8 01 01 00 00 C7 53 50 09 2A 34 FF FF 2B C0
    71 FF FF FF 01 89 D8 FF FF AF FF FF FF FF FF B8

    Main memory:
    8D C8 01 01 00 00 C7 53 50 09 2A 34 FF FF 2B C0
    71 FF FF FF 01 89 D8 FF FF AF FF FF FF FF FF B8

    4C FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
    FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

    FF 13 FF FF 01 FD 01 F5 01 E9 01 E6 01 E2 01 D6
    01 CB 01 B4 01 8A 01 6A 01 A5 01 53 01 C4 FF FF

    01 80 01 C0 01 A1 01 48 FF FF FF FF FF FF FF FF
    FF

    FF
    FF

    FF
    FF

    FF
    FF

    FF
    FF

    FF
    FF

    FF
    FF

    FF FF FF FF FF FF FF FF 0B 18 01 20 D0 00 01 AC
    00 00 99 0D 00 04 02 01 01 E2 00 01 00 00 4B 17

    FF FF FF FF FF FF FF FF FF FF 16 00 1E 00 03 00
    13 00 13 00 14 00 10 00 16 00 0B 00 12 00 1F 87

    0A 48 4E 4E 34 30 30 33 41 64 16 00 BE 00 0F 00
    0B 00 16 00 0D 00 16 00 13 00 13 00 01 00 1F ED

    FF 04 78 00 DE 0F 00 00 00 00 00 00 00 00 00 00
    00 00 3C 0F 0C 64 64 64 64 64 64 64 64 64 64 66

    04 10 02 44 07 00 00 00 00 00 53 0B E5 00 AE 0B
    8F 85 34 13 E8 6E 0A 69 01 D8 00 B1 0B 6C 01 E5

    FF FF 04 06 32 1E 03 04 80 0C 03 05 05 15 75 01
    12 C0 02 00 E2 08 A1 78 9B 01 9B 01 01 03 05 52


  2. #2
    Join Date
    Feb 09, 2013
    Posts
    48
    Thanks
    23
    Thanked 10 Times in 8 Posts
    Country: Finland

    Default

    I did some more tinkering and shot myself in the leg with my logic.
    The cpu on the charger board acts as a master for the microlan between the charger and battery. Thus, connecting the power to the charger while connected to the DS9490 crashed the bus and resulted in a rapidly flashing red led on the charger.

    I would guess the impres battery data reader is simply a 1wire interface. If someone has one, it would be interesting to see a few fotos from the inside.

    To fabricate your own CIU's you would need something like a 1-wire sniffer. These are available, but a tad on the expensive side. Especially in the case of a MUC, where you need a sniffer per board.

    Again, it would be very interesting to see the innards of either charger interface unit. According to the battery reader software packs drivers, the CIUs include a virtual com port. One could guess that the CIUs are just simple sniffers.

    I'm finding the $400 for the IFM a bit steep + hardware, but it would seem to be the easiest way, and other options might not be cheaper anyway.

    Any insights?

  3. #3
    Join Date
    Mar 11, 2012
    Posts
    31
    Thanks
    7
    Thanked 16 Times in 7 Posts

    Default

    Here you go. There's not much inside other than the shielded bit. I didn't want to unsolder the shield to see what was inside.
    IMG_2298.jpgIMG_2299.jpgIMG_2300.jpg