diy solar

diy solar

Recent content by Frank Smith

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    Apexium 28000 BMS RS485 data format

    Thanks. I will look at them.
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    Apexium 28000 BMS RS485 data format

    I have an Apexium 28000 BMS and want to retrieve data from it through the RS 485 or CAN Connections. The data I am interested in is the voltage, current and SOC. I'm looking for some kind of data sheet that describes the format for all the commands and responses for this BMS. Where can I find...
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    First DIY 302ah 48v battery.

    You can start with a 12 volt system. I did this. It ended up costing a lot more in the long run. When you go from 12 to 48 volts, you have to buy a lot of things again. I started with FLA batteries which were useless after 3 years and had to buy the inverter, and the charge controller again. I...
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    Renogy 40a mppt Li settings

    Thank you for all your help! Charging is working great now. It charges quickly to around 90 % and then goes into float. In float the amps produced follow the load.
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    Settings for Renogy Rover 60A and Overkill Solar BMS for 302 ah CATL 4s battery pack

    If you change Bat Type to user (maybe abbreviated use), you will be able to change those settings.
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    Renogy 40a mppt Li settings

    The DIY pack was easy to build. A friend and I built it in one night. The hardest part was trusting enough to send the money to China. I am very happy with the batteries and the case. Now to figure out all those parameters! I thought that the BMS came from the factory set to either 15 to 95%...
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    Renogy 40a mppt Li settings

    Are Boost and Float both constant voltage settings, with the setting for the boost higher than the float? Is that the only difference between them? That is the goal. When I had the lead acid batteries, it did this. If a big load like the microwave turned on, the charge current would increase...
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    Renogy 40a mppt Li settings

    I just switched from lead acid to lithium this week. It was a 304 AH assemble it yourself kit from Docan. I'm slowly getting familiar with it. There are 87 parameters, many of which I have no clue about. It is now set at the default settings that came with the BMS. The BMS at one point reported...
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    Renogy 40a mppt Li settings

    Thanks. I am trying to get the batteries charged as full as possible without overcharging them. I am trying to tune the charge controller to do this using Dynoman's settings. The BMS said 96% SOC. I agree the BMS is likely more accurate. Earlier before I tweaked the settings the batteries were...
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    Renogy 40a mppt Li settings

    I have the Renogy 60A controller and it goes to float too soon. My lithium battery pack shows 70% SOC while the Renogy shows 100% and is in float. I am using your suggested settings. I agree that the renogy setting for lithium seem high. What setting(s) tell the Renogy to go from Boost to...
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    What happens to the controller when the BMS Faults?

    Thanks! I have been looking in my BMS software. It uses different words and I'm trying to match them to the ones you sent. For example there is an entry Monomer high voltage alarm 3.5 Volts and monomer overvoltage protection 3.65 V. These may correspond to your Cell over voltage release and...
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    What happens to the controller when the BMS Faults?

    I installed lithium battery because my lead acid batteries were failing. I have utility power available but don’t sell back to the utility. My system consist of 3400 watts of panels, 60 amp Renogy MPPT charge controller, a 4KW Schneider 4048 inverter and the 48 volt 280 AH lithium battery. The...
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    Charge Controller Settings

    I have the Schneider SW 4048. It has been running for several years with no problems.
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    Has anyone used the batteryfinds to buy batteries?

    I like the price $2,639.00 for a 48 volt 280 AH battery assembled. I am ready to buy a lithium battery because my lead acid batteries are at the end of their life. I like of idea of buying from the US and using a credit card for protection. Maybe I am too paranoid, but I saw a couple of red...
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    Has anyone used the batteryfinds to buy batteries?

    Thanks for looking. My friend noticed the same problem with the website. He was able to fix it by changing the screen size in his browser (Cntrl + or Cntrl -).
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