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Battery monitor question? TM-2030 vs. Whizbang Jr.? Or both?

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  • Battery monitor question? TM-2030 vs. Whizbang Jr.? Or both?

    Hello Everyone,

    As I am piecing together the solar design I have made a few purchase that seemed safe. One of those was a Trimetric TM-2030 battery monitor.

    I had planned on a Victron MPPT charge controller and the TM-2030.

    In another thread it was pointed out to me that I may benefit from running the Midnite Classic and Whizbang Jr. I am leaning strongly that way but am wondering if I should ditch the TM-2030 in favor of the Whizbang or should I install both? Any benefit to having both?

    Thanks.

    S.
    Last edited by PNW_Steve; 12-08-2018, 03:29 PM.

  • #2
    Simple battery monitors without a shunt, are only able to make a wild guess, as to the actual state of the batteries. Using a monitor that counts amps IN vs amps OUT can come very close to being accurate.
    Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
    || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
    || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

    solar: http://tinyurl.com/LMR-Solar
    gen: http://tinyurl.com/LMR-Lister

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    • #3
      Victron Has their own shunt based battery monitor. FYI.
      2.2kw Suntech mono, Classic 200, NEW Trace SW4024

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      • #4
        Ok.

        Since both monitors I asked about each use a shunt and I am going to use the Midnite Classic....

        What do you recommend?

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        • #5
          Originally posted by PNW_Steve View Post
          Ok.

          Since both monitors I asked about each use a shunt and I am going to use the Midnite Classic....

          What do you recommend?
          I do not use a shunt, I rely on experience and battery voltage (NiFe bank) for my self. I have a classic, and am active on the Midnight Solar msg board http://midniteftp.com/forum/
          From my time there, the Whiz Bang Jr is a very fine shunt, when installed properly and intergrates well with the system, mostly for measuring End Amps to complete a charge cycle.
          I don't recall if the Midnight WBJr actually totals In vs Out.

          Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
          || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
          || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

          solar: http://tinyurl.com/LMR-Solar
          gen: http://tinyurl.com/LMR-Lister

          Comment

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