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Thread: Charge Controller - Load Connection

  1. #11
    Join Date
    Mar 2006
    Location
    SF Bay Area (California)
    Posts
    21,235

    Default Re: Charge Controller - Load Connection

    If you stick with 12 volts and 300 watts or so--The MorningStar Suresine 300 watt 12 vdc TSW inverter has a programmable LVD (10.0 volts minimum).

    Not sure what hardware you may have to purchase to talk to the inverter (looks like you need Morningstar PC Meterbus Adaptor (MSC) for ~$32)--Only you can decide if this is worth the time/money to reprogram.

    -Bill
    20x BP 4175B panels (replacement) + Xantrex GT 3.3 inverter for 3kW Grid Tied system + Honda eu2000i Inverter/Generator for emergency backup.

  2. #12
    Join Date
    Oct 2010
    Location
    Nova Scotia canada
    Posts
    2,720

    Default Re: Charge Controller - Load Connection

    In my opinion, allowing battery voltage to drop below 12 volts, other than for relatively brief periods while under heavy loads, will be draining the battery below a safe level for good battery life. That's the way I run my system and my batteries are still in excellent condition after 10 years. But I guess it all depends on how one wants to treat their batteries and how ready they are to replace those batteries on a more or less regular bases.
    1900 watts PV, (1000 watts PV feeding MidNite Classic 150; 900 watts PV + 160 watts micro hydro both feeding into a single shared Morningstar TS-MPPT-60) ; Xantrex Pure Sine 1800/12 for heavy loads; Xantrex Pure Sine 1000/12 on 24/7 for everything else; six Rolls Surrette 2 volt L16 @ 12 volts.
    Domestic hot water totally provided by the sun 8 months out of every year via thermal panel.

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