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    If ok to use MPPT solar controller as a DC to DC connect to Car alternator to charge LifePo4?

    Forget it, there are $10-$20 boost converter module on eBay, just set the output voltage to 13.4, much easier to setup and wiring. Thanks.
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    If ok to use MPPT solar controller as a DC to DC connect to Car alternator to charge LifePo4?

    yep, think about the cheap boost converter, but those are all charge range from 24v - 72v, not 10 - 15v to 14V. Reason I am thinking about it, to charge the LifePo4, absorb can be just 14.0 - 14.4, and float just 13.4 - 13.6. It seems to be fit.
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    If ok to use MPPT solar controller as a DC to DC connect to Car alternator to charge LifePo4?

    My car is 2009 Lexus RX350, just check it start the car with battery voltage 12.2V. Checked voltage from the alternator cable, (not the battery terminal), it read from 14.56 to 13.85, I believe it depend on the battery SOC. Going to try it when I have time.
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    If ok to use MPPT solar controller as a DC to DC connect to Car alternator to charge LifePo4?

    Hi, think about this idea for a while. Use the Car alternator directly charge the LifePo4 is a NO GO, damage the battery and burn out the alternator. But how about put in MPPT controller on it? I have a spare MPPT controller, it has function limit charge current. If I set the charge current...
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    Please, need recommendation for Charge controller (12V LifePo4 Bank)

    Thank you so much for such detail reply. And yes, It was so simple, bad connection. Don't know how but when I look closly, one of the calb cell post seems to be remade or some sore of repair. I reconfigure and test them in 4 pcs group, identified the One cell cause the problem.
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    Please, need recommendation for Charge controller (12V LifePo4 Bank)

    This is my small project, got 8 pcs used CALB cell (100Ah, test them got 70-80Ah), make the 12V banks for 12V pump to fix underground water problem. So, the 12v bank has about 150Ah capacity, I can put on 100W x 3 panels in serials for it. However, seems like the controller will not pull out...
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    Please help me understand my 100W x 2 panels.

    Hi, I am sure the problem is the "MakeSkyBlue". Seems it does not work or charge so well with 12V small watts system. Yeap, 14.4V is correct charge voltage for LiFePo4 battery. I increase the charge volt setting just for test. There isn't voltage drop during my test, both PV and battery are...
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    Please help me understand my 100W x 2 panels.

    I found out more. The problem is the MakeSkyBlue charge controller. 100A LiFePo4 battery, voltage is 12.1V, connect to controller. The setting from MakeSkyBlue is Li, 14.4V. then with 100W x2 panels, out put 93W, but if I change the charge Voltage to 14.8V, the output is 119W. Today is nice...
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    Please help me understand my 100W x 2 panels.

    Wow, finally make it work. Still not sure about what part did I make right. The battery drain down to 11.5V, adjust the setting of MPPT controller, save the setting. And disconnect the battery (POWER OFF the MPPT controller), wait a few seconds to reconnect the MPPT. (I believe the POWER OFF...
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    Please help me understand my 100W x 2 panels.

    MakeSkyBlue 60A, V118
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    Please help me understand my 100W x 2 panels.

    I am discharging my other 100A AGM battery, will test again other day. The "MakeSkyBlue" is good 60A, cause I have a bigger array for 60V battery bank, 335W x 6, as today the best output is 1635W, so MPPT is not the problem.
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    Please help me understand my 100W x 2 panels.

    Hello, everyone: I have 100W X2 Renogy panels(RNG-100D, used), I use them to charge my 12V LiFePo4 (100A) for Aux pump (12V). I use MakeSkyBlue MPPT V118 for test them. (Battery type, Li, charge Voltage 14.40) With single panel, shows Voltage 20.31, Watts 46.16, it is ok. (here in New York...
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    Sun 2KW GTIL. Why would it back off power production?

    Nice to know, I just setup my Sun 2KW GTIL, so far with 700W solar panels. Will see how it handle. Then I will add up to 2KW solar panel.
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    CT sensors extension cord, make with 20 years old AT keyboard extension cable. works.....

    SUN 2KW Grid Tie Inverter, 220V, need 2 CT sensors in series clamp to 2 phases 110V each. The breaker panel is down in Basement, need extension cable, happen to have 2 pcs AT keyboard extension cords. Anyone old enough recognize those plugs. Total length is over 30 feet. Seems works fine. When...
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    What is the best way to run wires? ECO-WORTHY 2KW Grid Tie Inverter with Limiter

    Hi, thank you "gnubie". I am going to get the GTI, there are several brands but all look same, guess they are all make in China, maybe even from single manufacturer. Yeap, it is the current make me headache. I found the probably same model at taobao.com, the spec doesn't show anything about...
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    What is the best way to run wires? ECO-WORTHY 2KW Grid Tie Inverter with Limiter

    https://www.eco-worthy.com/collections/grid-tie-inverter/products/2000w-lcd-display-mppt-grid-tie-dc-45-90v-auto-switch-inverter?variant=30250293264436 here is the inverter So, how about the wire size?
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    What is the best way to run wires? ECO-WORTHY 2KW Grid Tie Inverter with Limiter

    Got 6 Trina 340W Panels, think about put them together to 2000W Inverter (output 240V). here is Panel's spec: Imp 8.9A Vmp 38.2V Isc 9.5A Voc 46.2V the Inverter input is 45V - 90V. the Best I can do is 2s 3p, if 3s, will exceed the input Voltage. The Voc is 46.2V, so if 2 panels in series...
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