Warning: disgruntled customer who only registered on the Forum to warn others about supplier (and do a little bitching in the process).
This is the outcome of my order from Deligreen (Changsha Deligreen Power Co on Alibaba):
A couple of weeks ago I put in an order with Deligreen through Alibaba for some new cells and 2 BMSs to build a new house bank for my boat.
On unboxing them it became immediately apparent that something was not quite right with the shape of some of the cells. A quick Google search for CATL 310Ah cells swollen" returned this very useful thread which led me to investigate further
The 8 "New CATL 310AH" cells that were advertised as "matched, balanced, capacity tested" and "with QR code" arrived bulging, unbalanced with some as low as 2.9V and with scratched off QR codes hidden under a thick sticker on the top plate perfectly cut to size to make it look like it was part of the battery. When I confronted the seller about it they wouldn't address the discrepancy between what was advertised and what I actually got and instead insisted I accept them and use them. When I showed zero interest in being given the runaround and pressed for a refund they switched to playing the victim card. They have so far not replied to my return request on Alibaba although they have messaged me multiple times to try and talk me into keeping them. The day after I sent them screenshots of their listing stating "with QR code, brand new" they amended the listing quoting "a mistake", removed the photo I had screenshot and said nowhere on the ad it stated the cells have a QR code, pasting a link to the edited listing (which still shows the QR code).
Bottom line is there's no way I am putting bulging factory reject cells on my boat, even if I have to take a hit and put them in the bin and buy again. If this is what happened on day one who knows what I'll be in for 6 months down the line.
Caveat emptor.
This is the outcome of my order from Deligreen (Changsha Deligreen Power Co on Alibaba):
A couple of weeks ago I put in an order with Deligreen through Alibaba for some new cells and 2 BMSs to build a new house bank for my boat.
On unboxing them it became immediately apparent that something was not quite right with the shape of some of the cells. A quick Google search for CATL 310Ah cells swollen" returned this very useful thread which led me to investigate further
CATL 310AH Grade A Prismatic cells from Basen
Hi, https://www.alibaba.com/product-detail/CATL-3-2v-310ah-Deep-Cycle_1600180911477.html?spm=a2700.shop_pl.41413.10.3a8343a5GhXoYS Has anybody tried these cells? They are CATL cells and my hope is that they can deliver more than 1C dischare rate. Other CATL cells often delivers 3C for 60...
diysolarforum.com
The 8 "New CATL 310AH" cells that were advertised as "matched, balanced, capacity tested" and "with QR code" arrived bulging, unbalanced with some as low as 2.9V and with scratched off QR codes hidden under a thick sticker on the top plate perfectly cut to size to make it look like it was part of the battery. When I confronted the seller about it they wouldn't address the discrepancy between what was advertised and what I actually got and instead insisted I accept them and use them. When I showed zero interest in being given the runaround and pressed for a refund they switched to playing the victim card. They have so far not replied to my return request on Alibaba although they have messaged me multiple times to try and talk me into keeping them. The day after I sent them screenshots of their listing stating "with QR code, brand new" they amended the listing quoting "a mistake", removed the photo I had screenshot and said nowhere on the ad it stated the cells have a QR code, pasting a link to the edited listing (which still shows the QR code).
Bottom line is there's no way I am putting bulging factory reject cells on my boat, even if I have to take a hit and put them in the bin and buy again. If this is what happened on day one who knows what I'll be in for 6 months down the line.
Caveat emptor.
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