Hi - Thought I would share my experience so far and upcoming journey with purchasing cells from Deligreen on Alibaba and battery bank build: https://deligreen.en.alibaba.com/co...lleryofferlist.0.0.795718a8RAd0SV#top-nav-bar
Deligreen: Main contact for me is April Cao, I believe she is the main point of contact for Deligreen Alibaba sales. My interaction so far has been good. Responsive and willing to explain details and provide technical data sheets (EVE specs.). I selected this vendor based on comment on this board from users that had a good experience.
Cells: I selected the 280AH cells purely on cost per KWH. I purchased 66 which works out to 1120AH when configured in a 4p16s setup (bought 2 spares). Paid $80 / cell at the time, end of April, so with sea shipping total cost was $6500 or $112/kwh. Pretty good deal when I was considering purchasing another Leaf pack and dealing with the unknown performance of the 'used' cells.
Shipping: Took roughly 70 days from order to delivery. Unfortunately between COVID and bumping into the May Day holiday in China it took almost 4 weeks before they were shipped out.
Packaging: Ok. I think they could've done better. When I received my order a number of boxes were beat up, holes and tears. As a result 7 of my cells were damaged beyond use, large dents and leaking fluid. This is one of my suggestions to April that they need to improve packaging. Examples:
All voltages were between 3.25 to 3.28 two except for two outliers, 3.33 and 3.15. I'll see how they act post a top balance but if needed I"ll just pair them up accordingly with stronger / weaker cells. I had very good success with that method when building my current Leaf pack - going on two years with no out of balance issues.
7 damaged cells: Working with April now to see what they can do in terms of expediting the sending of those cells. They had agreed to replace the cells but waiting to see if they can ship by air vs sea again.
I'll keep folks posted once my top balance is done and I start getting this replacement / upgrade battery bank built.
Deligreen: Main contact for me is April Cao, I believe she is the main point of contact for Deligreen Alibaba sales. My interaction so far has been good. Responsive and willing to explain details and provide technical data sheets (EVE specs.). I selected this vendor based on comment on this board from users that had a good experience.
Cells: I selected the 280AH cells purely on cost per KWH. I purchased 66 which works out to 1120AH when configured in a 4p16s setup (bought 2 spares). Paid $80 / cell at the time, end of April, so with sea shipping total cost was $6500 or $112/kwh. Pretty good deal when I was considering purchasing another Leaf pack and dealing with the unknown performance of the 'used' cells.
Shipping: Took roughly 70 days from order to delivery. Unfortunately between COVID and bumping into the May Day holiday in China it took almost 4 weeks before they were shipped out.
Packaging: Ok. I think they could've done better. When I received my order a number of boxes were beat up, holes and tears. As a result 7 of my cells were damaged beyond use, large dents and leaking fluid. This is one of my suggestions to April that they need to improve packaging. Examples:
All voltages were between 3.25 to 3.28 two except for two outliers, 3.33 and 3.15. I'll see how they act post a top balance but if needed I"ll just pair them up accordingly with stronger / weaker cells. I had very good success with that method when building my current Leaf pack - going on two years with no out of balance issues.
7 damaged cells: Working with April now to see what they can do in terms of expediting the sending of those cells. They had agreed to replace the cells but waiting to see if they can ship by air vs sea again.
I'll keep folks posted once my top balance is done and I start getting this replacement / upgrade battery bank built.