Alkaline
Solar Wizard
gotcha, thread title said 305...haha... cool, I wonder if they can square terminals like the rept cells for more area on these cells.
Gangfeng 280 Cells
- Thread starter Robby1773
- Start date
Bud Martin
Solar Wizard
- Joined
- Aug 27, 2020
- Messages
- 4,844
You should change the headline to 280Ah.
I am happy with my REPT 280ah from 18650.
It's fixed. Lol. I didn't even think about that.
Quattrohead
Solar Wizard
Solar assistant just put support in for JK BMS so you might need to update your installed version.
It was there. I reversed the wires going to usb adpter. Rule is don't wire when your tried. Lol
No.15
That's my number
- Joined
- Jun 29, 2020
- Messages
- 123
Just tried to buy a bunch of these st 18650 and they are basically out. Someone purchased a large amount right before I called lol. I ended up getting eve 230's. These will be better for me size wise anyway.
How many were you trying to get. I only took 16 of them lol ?
No.15
That's my number
- Joined
- Jun 29, 2020
- Messages
- 123
52. He told me there were only 16 left. Perhaps you got them ?
Coydon
New Member
I think these Ganfeng 280s were the ones 18650 had listed as "restocking soon" for the last few weeks? They listed them as 'in stock' yesterday and I tried to order 8, but they said only 7 were available when I went to check out. I went back today and I was able to put 8 in the cart. Then I noticed they had dropped the price by $20. I bought my 8. Then I noticed they had dropped the rating on the listing to 270Ah.
I wonder if by 're-stocking' they were sorting through the ones they already had but that didn't test out above 280?
I wonder if by 're-stocking' they were sorting through the ones they already had but that didn't test out above 280?
Ampster
Renewable Energy Hobbyist
That may be a safe assumption. That may also be consistent with the reports of quality coming from that vendor.
Coydon
New Member
Meaning Ganfeng is known for low quality cells?
Ampster
Renewable Energy Hobbyist
I don't know anything about Ganfeng cells. I was referring to good reports about 18650 store.
Coydon
New Member
Cool, that's what I was hoping.
Alkaline
Solar Wizard
These are grade B cells so I'm thinking they are ganfeng 280s being sold as 270.
Coydon
New Member
Got these delivered already, took about 3 or 4 days after ordering from 18650. They are marked 284, 282, 281, and 279.8 in one box. The other box just has "280AH" on the label and the cells' individual labels are all 280.5-280.8 except the fourth one is 280.2, has the foil thing in the center of the top deformed, and has fluid soaking the top. I'm guessing this is some sort of rupture? Haven't had any extreme temperatures around here since it was dropped off, the cardboard box looks normal on the outside, and the cells were all securely in their shipping foam with the fluid contained around this one cell.
They all show 3.28V except the 284Ah one reads 3.25V, as does the leaky one.
What date format does Ganfeng use? Would these be from 2018 or 2022?
They all show 3.28V except the 284Ah one reads 3.25V, as does the leaky one.
What date format does Ganfeng use? Would these be from 2018 or 2022?
Last edited:
I have some of these cells also. Some are marked 22-10-18 and some 22-10-19, so I'm pretty sure its year, month, day.
Coydon
New Member
Somebody from 18650 responded to me first thing Monday morning to tell me their tech support would contact me within the next 24-48 hours. Now 75+ hrs and counting...
Could someone here explain what that silver foil thing on top of the cell is?
Could someone here explain what that silver foil thing on top of the cell is?
Ampster
Renewable Energy Hobbyist
That is where the electrolyte vents if it needs to. I had one do that and it did not hurt the cell. You will know if it vented, because of the smell of ether.
Coydon
New Member
Should the vent return to the 'sealed' look of the others when done venting?
I don't know if my brain is too frazzled or something right now, but I'm not finding the chemistry of LFP electrolyte with some quick searches. Hoping it is something more innocuous than sulfuric acid?
I was just contacted by 18650 and they are sending a replacement cell in response to my query...
