• Have you tried out dark mode?! Scroll to the bottom of any page to find a sun or moon icon to turn dark mode on or off!

diy solar

diy solar

Most reacted posts

  • Post in thread: 4S2P Battery pack project

    Hello all. I got these battery in from the long waiting list..... These are 230AH eve Cells. A total of 8. I had top balanced the cells to 3.65 v and built a single 4S pack for testing their capacity. This is what I have below. I did build a small box to help keep the cells intact. Yes, did...
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Finally got a load on after tinkering with this BMS.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Correction, I do have a very small inverter connected 750w old dinosaur....but it is off.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    I'll add it here to help someone in need in the event they are in the same position as myself. I appreciate everyone's input and collaboration.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    I did add a charge with the voltage set to 14.5v and nothing takes place.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Just an update. Added a 100 watt/ 5.3 amp solar panel to the MPPT. So far all is well. The battery is slowly being charged.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    I'm going to take apart the BMS and resolder the temp sensor to see if that has anything to do with it.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    I found my stash. Added the inverter with some 1/0 gauge wires. Fuse will be in tomorrow. Almost there. I was able to pull a 1550 watt load for a few seconds before the inverter went in protection mode due to the small 120 amp BMS. Pulled about 150+amp for that short period of time. So far so...
  • Post in thread: Lishen 202 Ah cell 12V battery build BMS recommendation

    Super clear now. I appreciate. It.
  • Post in thread: Daly BMS 4s 12V250A

    Hello A. Justice. I did see that one as well. I appreciate it
  • Post in thread: 12V PV Array check needed.

    Definitely going this route.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    😁😎, I'm sure that's coming soon
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    So, I got the temp sensors back on
  • Post in thread: Battery for Beginner's project

    Hello All. As the title states, I am putting together a solar system based on what I have read on here. I was looking at the most recommended batteries, but they are currently not available for ordering. (SOK) Has anyone used this type of battery? Please provide any input possible. (I hope I...
  • Post in thread: Chargery 2S-16S 300A BMS 9 total.

    You got a PM!
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Yes, at this point 14.2v. Could it also be this culprit? Broken temp sensor....
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Yes, I adjusted the value to match the bulk voltage of the SCC which is set at 14.3v. That is the max voltage I have set as the parameters in the BMS. Below are my numbers. Let me know if that somewhat makes sense. Or,should I adjust accordingly. As of now, the battery is at full SOC. I will...
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Will definitely do that. I appreciate the recommendation.
  • Post in thread: AIMS Battery Charger 12V & 24V Smart Charger 75 Amps

    Hello Brett. yeah, I don't think I want to mess with this at all. Thanks though.
  • Post in thread: Daly BMS 4s 12V250A

    So, as I'm researching and finding documents on the forum, I'm going to post the links in this thread. https://diysolarforum.com/threads/new-daly-smart-bms-w-communication-80-250a.7002/page-2 https://diysolarforum.com/resources/daly-smart-bms-manual-and-documentation.48/
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    I've used the overkill app as well. I'll give it a go once more.
  • Post in thread: EVE 230Ah Batteries

    I recently tested these cells by building a 4S configuration. They seem to be holding up.
  • Post in thread: Hello from Florida

    Hello all. I have been wanting to build my own Solar System for a while. I stumbled upon this form and Will's youtube videos thus joining. I can't wait to dive in.
  • Post in thread: Lishen 202 Ah cell 12V battery build BMS recommendation

    Hello snoobler. I added all the components. Thank you.
  • Post in thread: 4s 8s bms and busbars .

    Are these still available?
  • Post in thread: Copper pipe for wiring battery cells

    I'll give it a go. Thank you.
  • Post in thread: AIMS Battery Charger 12V & 24V Smart Charger 75 Amps

    Please correct me on this. If charging a 12v or 24V battery configuration, does this switch adjust the Amp the charger will deliver to the battery? example: Charging a 12V battery @ 50% . Will it only deliver 75A/2= 37.5A?
  • Post in thread: 12V PV Array check needed.

    I'll take a look at those combiner boxes
  • Post in thread: Lishen 202 Ah cell 12V battery build BMS recommendation

    Hell Just John. I appreciate the feedback. A member was selling one on here. SO, I honestly bought it. ? Hoping I don't pull close to that Ah, maybe the fan won't come one and last me a little while. My question is: Can I go with a smaller BMS although the inverters input is 12V 200A? Thank you.
  • Post in thread: 4S2P Battery pack project

    To run a long term load on the same 4S battery, I charged them back up to 14.6V. My second test was using my refrigerator. The spec: Inverter used with the same cheap wires: These are the number I got as far as capacity goes for this set of battery. Time: 29:12 Hours Amp: 9.7 KW: 2.45 per...
  • Post in thread: Daly BMS 4s 12V250A

    Here is a video I just found. There are some good information in here as well. Most of it has been covered. He does mention about the two pins that needs to be bridged @ (17:35)
  • Post in thread: Daly BMS 4s 12V250A

    Hello all. I purchased this Daly from a member here to build a battery pack. (initially 280Ah, but had to switch to 230Ah) long story. This Daly didn't come with a manual. I searched as well, but could not find anything pertaining to the numbers below. Daly BMS specs: What came in the box...
  • Post in thread: 4S2P Battery pack project

    Second Edit: I have not done much “heat“ testing, but I run thick 4/0 wires for 155 amps for a coupe of minutes, and those wires do not get hot. If I dropped this down to 2 AWG, I think it would. 2 AWG is not rated for that much amperage = At the time of testing the Pack, that was the only...
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    So as mentioned, I wonder if the temp sensor could be the culprit to this. See the screenshots below with the warning.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Finally getting somewhere with my issue. I had to remove the sensor and resolder them to the actual pins. So far I'm getting a reading. Next, Should I select from the standard parameters listed here? Or adjust the values based on overkill's manual?
  • Post in thread: 12V PV Array check needed.

    This is the one I had bought from Amazon.
  • Post in thread: 12V PV Array check needed.

    These are the wires i had bought.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Let me try that. I've not tampered with any settings there. Those are all standard from the app using LIFEPO normal setting.
  • Post in thread: 4S2P Battery pack project

    Yes, I downloaded the wire chart as a refence from the resources tab. Based on the parameters of the Dally setting, that is what I see here as well.
  • Post in thread: 4S2P Battery pack project

    Thanks SmoothJoey.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Now that I'm getting more into this endeavor...., I learn as I go. I just did a quick search before asking I and it seems the Victron shunt is the to go. I would use that for my permanent setup, but is there something else out there I can use for testing .... Like these? Or something you...
  • Post in thread: 4S2P Battery pack project

    To add to this. I went ahead and made some busbars with some copper pipes I had laying around. 1/4" pipes flatten down. Not my best handy work at the first attempt. I ran on those busbars on the batteries for 29+ hours to power the refrigerator. I checked in on them from time to time while...
  • Post in thread: 4S2P Battery pack project

    My plan now is to finally build the 4s2p packs in a box. looking at 460A pack @ 12V (14.6V charged) Should I double on the busbars I made? Thank you.
  • Post in thread: 4S2P Battery pack project

    Hello smoothjoe. I did download most of these needed information from the resource tab. I just have to incorporate them now. I appreciate your feedback. Than you.
  • Post in thread: 4S2P Battery pack project

    This is good to know. I was going to add heat shrink to the ones I am working on, but not anymore. Thanks again.
  • Post in thread: 12V PV Array check needed.

    Hello all. What will be the best setup for these 6 solar panels? Solar panels information: 6 x 100w Vmp: 18.9V Voc: 22.5V Imp: 5.3A Isc: 5.7A I was thinking to arrange my panels into three parallel strings of 2 panels in series. (2x 22.5V)= 45.0V @ 5.3A x3 parallel strings = 45V @ 15.9A Or...
  • Post in thread: Lishen 202 Ah cell 12V battery build BMS recommendation

    I messaged you.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Sounds like a plan.
  • Post in thread: 120aH LiFePO4 prismatic cells and Smart bluetooth BMS for sale

    Pm'ed
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Curious question to ask . I was reviewing the state of charge in the BMS setting. I noticed the voltage per percentage is inverted with the number listed here. Should I correct these?
  • Post in thread: Copper pipe for wiring battery cells

    Hello all. I'm bringing this topic back to life. I have quite a few pieces of copper pipes laying around from some home projects. I also read the "Smash it Flat" to make some copper Bus Bars for your batteries. My question is, is this an approachable route to go as well? Example of battery...
  • Post in thread: Lishen 202 Ah cell 12V battery build BMS recommendation

    Hello all. As the title states. I'm about to pull the trigger on these cells to start a small Solar Project. I want to build a 12v system with these cells and maybe parallel a second. What would be a recommended BMS to go with? System: Solar panels: 4 x 100w Vmp: 18.9V Voc: 22.5V Imp: 5.3A...
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    😆
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Hello everyone, I need some help please. I've wired up this system and it was working for a few days just to check the MPPT. I've disconnected everything to place it in a secured box and now the MPPT won't turn on. Battery: 4s 120 amp MPPT: Victron 100/20 See pictures below. Voltage on the...
  • Post in thread: 12V PV Array check needed.

    I'm more leaning towards the 2S3P setting. Yes, my concerns now are the wires between the battery and inverter. Thank you.
  • Post in thread: AIMS Battery Charger 12V & 24V Smart Charger 75 Amps

    Got it.
  • Post in thread: 12V PV Array check needed.

    Yes, the MC4's I have are rated for 30A. I also have on hand one of those inline fuses as well rated at 30A 2S3P will be my route. The Max input on this SCC is 145V @ 40A. Thanks.
  • Post in thread: Samsung SDI ICR18650-26F Boxes of 120 (SC, USA)

    PM'd
  • Post in thread: 12V PV Array check needed.

    Correct, I have 10AWG wires.
  • Post in thread: Xiaoxiang BMS app/software update from wnsnty.xyz????

    I've noticed this as well when I hooked up my system, but learned to live with it.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    As of now, this box build is just a portable system I'm playing with. I plan on donating it to a old camper friend.... The max he might pull from there is a coffee pot and basic phone charging etc... And yes, the way I see this little build going sets room for upgrade and updated devices for my...
  • Post in thread: AIMS Battery Charger 12V & 24V Smart Charger 75 Amps

    Hello everyone. I picked up the AIMS charger from a member here. What would be the suggested charge profile to select? I was more leaning towards the LiFePo4 setting vs. AGM. Thank you.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    So I just checked the SOC and I went from fully charged to 60% overnight with nothing connected to the box. Could it be that the Bluetooth has some sort of drain on there? I will proceed and buy the shunt and take it from there as well to see what else can be tweaked.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Correct.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    I've made these changes so far. Voltage at battery terminals are 14.25v Voltage at positive and C- = 13.25V😞
  • Post in thread: Lishen 202 Ah cell 12V battery build BMS recommendation

    Is the BMS calculated based on the input current of the inverter? Thank you Snoobler.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    Connected directly to the battery and reads right away. Not sure what is happening here.
  • Post in thread: 12V PV Array check needed.

    Also, I want to add this breaker as a disconnect from the PV source going to the SCC.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    I'm going to connect a small inverter to test right now post back.
  • Post in thread: 4 280Ah lifePo4 cells BMS and Battgo that could be delivered united states a within 1 week $685

    Are these still available?
  • Post in thread: AIMS Battery Charger 12V & 24V Smart Charger 75 Amps

    Just a quick update here for those pro's out there that can shed some light here. I connected and charged my 12v battery with this charger. I left it connected overnight to see how well it will hold up. It worked flawlessly. The battery was charged using the "Gel" option. 14v charging and 13.7v...
  • Post in thread: 4S2P Battery pack project

    So sorry to bring this one back up from the past. I didn't want to re-post what I already have here. Due to a life changing event ,my project was put on hold. I'm slowly getting back on my feet and want to continue my endeavor in Solar. I've now come the conclusion to change my setup to a 24...
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    I've never seen this happened before. I also noticed the discharge parameter is set to off. It will not turn on even after a reboot. Reinstalled the app .... Very weird behavior.
  • Post in thread: AIMS Battery Charger 12V & 24V Smart Charger 75 Amps

    My cells are EVE 230AH.
  • Post in thread: Help with 4s pack and victron 100/20 MPPT

    With the BMS connect, nothing turns on.
  • Post in thread: AIMS Battery Charger 12V & 24V Smart Charger 75 Amps

    Yes, after connecting to the battery for less than 10 minutes, the charger did hit the float stage. No, there are no loads on the battery. I had it sitting and wanted to charge it up. Thanks for your response smoothJoey.
  • Post in thread: AIMS Battery Charger 12V & 24V Smart Charger 75 Amps

    I'll take a look at this. Thank you.

diy solar

diy solar
Back
Top