You open a dispute at AliExpress, and reveal your findings. You must be prepared for a tough fight, I'm sure OYE will keep repeating their same unsubstantiated claims of new and tested cells, and offer you 0.00 compensation, but reject these. If they deny your test results offer them to have the cells tested with an accredited Technological Institute in your country, and request they deposit the costs of such test in case the results does not meet their guaranteed minimum capacity. Most likely they will ignore this proposal, but then at least they can't force you to upgrade your equipment.what do i do with the bad batteries? install / use? throw away?
I'm from Denmark, no I don't think it is in shipping at all, my first delivery took a little bover 2 months, my second took over 3 months.Where do you come from? I suspect the fraud in the shipping. the delivery took 3 months to Germany
Yes, understood. I have had some success with Aliexpress and I noted someone on a different DIY solar group bought from OYE and seemed happy enough. So I thought it was worth a gamble. I am hoping to either use these batteries somehow or sell (with full transparency and honesty after doing capacity tests). I realised I'm not comfortable having them in my house though (which might have happened even without discovering they're old used cells).Buying on AliExpress is a huge red flag for me anyway, at least for cells (or other specific items).
For generic stuff - No problem in general
420Ah cells -> No-one has ever seen those, or its datasheets, but people still buy them on AliExpress and are surprised they don't pull full capacity.
Same as for swollen, damaged, used cells and so on. Cheap, shop online for 2 days, no reviews, still ordering...
Do your research, and order from a seller which does have experience with proper shipping and providing proper cells.
Yes, there is always a risk they start doing a great job, establish a decent customer base, and change tactics to get money and provide crappy cells, but thats much less likely than buying from AliExpress