I am getting solar panels installed and I want to add battery by myself. It would be pretty straightforward if I were to buy a setup from signaturesolar or bigbattery or some other place like that (if they ever get more stock). However I am considering maybe building a system myself using the EVE cells from AliExpress which Will has on his site with the 48V Overkill BMS. I would build two 48V banks of about 14.3 kWh each (3.2*16*280=14,336) , and connect them in parallel to my Sol-Ark inverter. I estimate about $6000 for the 32 cells and the two Overkill BMS units plus a bit for other wires, bolts, etc. I would also need a housing which I have not figured out yet. I am new to all this though I have a 20+ year background in IT and am generally knowledgeable in this stuff. I have never done anything like this before. How bad of an idea is it for me to attempt this? What am I missing?
I think I want to do something which is probably foolish ;-)
- Thread starter mikecogs
- Start date
The number one question, what will you do with the batteries once you build them?
Does the Sol-Ark have a battery input? Where will it be located? Is there adequate space nearby to physically hold that many cells, and what sort of temperature/humidity will they experience? If it is inside your house, a smoke detector, and fireproof box might be a good idea. That is a LOT of energy in a small space, one shorted cell or busbar and it all gets released in a short time period.
In general, it's a good idea, certainly worth investigating.
MisterSandals
Participation Medalist
$2948 for (32) (280aH)(New) LiFePO4
OK ... so of course I am a glutton for punishment and obviously after kicking over the beehive on my last post -- https://diysolarforum.com/threads/3142-00-for-32-280ah-3-2v-grade-a-fresh-manufactured-delivered-by-alithor-new-energy-co.20063/ where i found the batteries for (32) for 3143 i...
diysolarforum.com
$2948 for (32) (280aH)(New) LiFePO4
OK ... so of course I am a glutton for punishment and obviously after kicking over the beehive on my last post -- https://diysolarforum.com/threads/3142-00-for-32-280ah-3-2v-grade-a-fresh-manufactured-delivered-by-alithor-new-energy-co.20063/ where i found the batteries for (32) for 3143 i...
MisterSandals
Participation Medalist
Are you asking about this?
>>
I was contacted by SHENZHEN STARMAX ENERGY TECHNOLOGY COMPANY LTD and offered 32 280aH New Grade batteries .. delivered .. door to door for $2948.
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You could ask in that thread about whether it eventually turned out as stated. (sorry i did not read the thread completely). But ghostwriter66 has been a leading contributor and trailblazer on buying cells from China.
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