The panels I get are from solar farms and are used. Right now I am using Trina 250w panels and most them are testing near %100 but if I get %80 out of them I am happy. I also have a couple of more portable 100w panels I use that I got new but they are no name brand as far as I can tell.
I use mppt controllers but if you want to save money a pcm controller will get the job done. I usually use victron or outback for the controller.
I would figure your roi carefully because it is very easy to get upside down with these builds. If you are doing it for the fun and experience then by all means.
I would figure all of your charging at .2C and size from there. Make sure you use cables of adequate size this is very important. Hopefully they send busbars with the batteries even though sometimes they are not very good quality.
You are going to end up with a pretty heavy and big battery so make sure you have your case worked out. Each cell you ordered weighs ~13 pounds each if I recall, so that is 100 lbs in just cells. Environmentally I would check and make sure that they don't get wet as I am not sure they are built for that.
For BMS good luck finding a well supported one with low temp protection. It's not something I really worry about based on my location but when I looked last year there were not many options. This may have changed. I would go with one that has a lot of support in the communities. The one I linked is a very popular one and you can find it on alibababa pretty cheap under other names.
I would start small with a bench PS before jumping into the solar. It's handy to have and will help in the times the sun does not cooperate. Especially if you have just a few panels working. If you are going to store your batteries for long periods in between, remember that you should store at around %80 soc. These batteries hate being held at %100 for long periods.
You probably have at least 8 weeks until you get the cells, so a while to make decisions on how your build will go.
What are you planning on using for an inverter? This is one item I for sure would not cheap out on. Some inverters have built in chargers so you may be able to kill two birds with one stone so to speak. There are also AIO units that have inverters, chargers and mppt controllers but they are meant for permanent installation.
I use mppt controllers but if you want to save money a pcm controller will get the job done. I usually use victron or outback for the controller.
I would figure your roi carefully because it is very easy to get upside down with these builds. If you are doing it for the fun and experience then by all means.
I would figure all of your charging at .2C and size from there. Make sure you use cables of adequate size this is very important. Hopefully they send busbars with the batteries even though sometimes they are not very good quality.
You are going to end up with a pretty heavy and big battery so make sure you have your case worked out. Each cell you ordered weighs ~13 pounds each if I recall, so that is 100 lbs in just cells. Environmentally I would check and make sure that they don't get wet as I am not sure they are built for that.
For BMS good luck finding a well supported one with low temp protection. It's not something I really worry about based on my location but when I looked last year there were not many options. This may have changed. I would go with one that has a lot of support in the communities. The one I linked is a very popular one and you can find it on alibababa pretty cheap under other names.
I would start small with a bench PS before jumping into the solar. It's handy to have and will help in the times the sun does not cooperate. Especially if you have just a few panels working. If you are going to store your batteries for long periods in between, remember that you should store at around %80 soc. These batteries hate being held at %100 for long periods.
You probably have at least 8 weeks until you get the cells, so a while to make decisions on how your build will go.
What are you planning on using for an inverter? This is one item I for sure would not cheap out on. Some inverters have built in chargers so you may be able to kill two birds with one stone so to speak. There are also AIO units that have inverters, chargers and mppt controllers but they are meant for permanent installation.
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