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    Samlex EVO 4248

    Anyone have any feedback on the new Samlex EVO 4248 split phase inverter? I have an off-grid residential application with 2.1 kw of panels. This inverter is UL approved so it will pass inspection. My concern is that it appears to only be able to charge the batteries from AC OR invert power...
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    Battery Imbalance?

    Our off grid solar system has 3 different types of LFP batteries. When measuring the current from each battery during load I noticed differences depending on battery type. The pouch cell batteries show the most current, the cylindrical cell batteries show about half, and the prismatic cell...
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    Battery matching

    I currently have 2 LFP 100 Ahr 12V batteries (cylindrical type) in series - brand A, 2 LFP 95 Ahr 24V batteries (pouch type) brand-B, and 2 LFP 120 Ahr 24V (pouch type) brand-B with each hooked up in parallel supporting a 24V inverter. 2 questions: 1) can I add a LFP 24V 200 Ahr battery...
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    Current changes at 48V

    Currently running 1900W solar with a 24V battery bank. If I switch to 48V will the voltage upstream of the charge controller also increase? Will this drop the current flow from my panels to the charge controller? Using a combiner for the 2 strings of 3 panels.
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    PV Grounding

    Can the PV system be grounded to the main electrical ground outside the house or does it have to have it's own ground? Midnite Solar says all PV systems must have DC-GSP in the loop prior to the SCC. Is that true for all PV systems or only those running 125V+? Looking at "24"V panels, 3 in...
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    Adding new battery to existing bank

    Looking to add brand X 24v LFP battery to current brand Y 24v LFP battery bank. What do I have to do to be sure there is no current surge when I add the new battery? How much current flow is OK (6 AWG cables)? The new battery has a 135A breaker on it.
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    Taping 24V Battery Bank for 12V

    Currently running a 24V battery bank with LFP 12V batteries in series. Can I tap into 1 battery and get 12V without messing up the State Of Charge of the system? What will the charge controller do if I pull 12V while charging at 24V? I can put the batteries in parallel to get 12V but that is...
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    Spartan Power Inverters

    Anyone have experience with Spartan Power inverters?. They don't appear to have settings for LFP batteries. Don't know if that is a concern. The charger also seems to kick in to charge the batteries at too low a voltage (21 V). Looking at the 24 volt model.
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    Oversized Array - Rainy Day Power

    At our location there are a lot of cloudy days which result in very low power from the PV array. Is it possible to use an oversized PV array for these conditions? I understand you don't want the charge controller to have to handle more voltage that it is sized for. But if the solar input is...
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    Exceeding High Voltage Limits on Inverters with LiFePO4 batteries

    Most 1500 to 2000 watt 12V inverters have upper voltage limits based on traditional lead acid batteries. Are there units you can recommend that will allow 14.5+ volts from a LFP battery? Looking to keep the cost under $400.
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    24V Inverter Recommendation

    Looking to upgrade to 24V inverter for an off grid system. Need a cost effective solution for 2000W. Giandel no longer makes the previously recommended configuration. Thoughts?
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    Battery Charging - Series vs Parallel

    If the battery manufacturer recommends 50A max charge rate and I set up the batteries in series then I should set the charge controller for 50A? If I set them up in parallel do I set the charge controller to 100A because the current will be split?
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    Solar Panel Mounting Issues

    Built a frame for my Renogy 100W panels using kiln dried 2x4s. Attached the panels with Renogy mounting hardware (bases screwed into 2x4). Took the panels off and stained the wood frame. When I put the panels back on the holes did not line up. Can I use wood for a frame or will it...
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    BYD 24V Powerwall

    Anyone have any experiece with how the BYD reconditioned powerwall batteries hold up? I know they are used but what lifespan should I expect?
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    Panel Quantity / Arrangement

    Should the number of panels based on charge controller capacity be calculated by VOC and Amp Short Circuit values for a given panel? Do parallel strings have to have the same voltage? What do you do if you can't get the same panels when adding capacity?
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    Dialing down a Victron Charge Controller

    During reviews of charge controllers I noticed that on some models made by Victron you can change the current output settings to lower the amp output (run a 100/50 and lower the amps to 30 for a Yeti power station). Does anyone have any experience with this? Does it damage the charge...
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    GZ Bolder 100 series connection

    Has anyone tried to connect GZ Bolder 100 panels in series to boost the voltage? What kind of adaptors are required? What is the pinout on the GZ 8mm connectors? I would like to use this configuration to charge the Yeti though a Vitron charge controller.
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