Hans Tuchel
Member
- Joined
- Jul 15, 2018
- Messages
- 38
ozz93666 said:This is a very big company ...here's a video about them ....
I'm sure they can be trusted and that the specks are fairly reliable ....
fantastic price , but what about shipping and import taxes???
DarkRaven said:Probably not worth it after you got them shipped and imported. Also, do they supply a proper datasheet for the cells?
Also don't forget the amount of work you have to put in to assemble a battery from 18650s. I think it's questionable to buy new 18650s if you want to build a large battery.
CrimpDaddy said:You might be looking at $200-300 per kWh completed... For they type of money, you can buy EV cells and save a ton of time and money not needing to package the cells into a module.
That said my biggest concern would be track-record, datasheet, quality, cycle life. I would consider something like this to be an unknown manufacture when compared to LG, Samsung, Panasonic and the rest of them.
Bubba said:Cool video. Wonder if the workers are forced to live on the site. Looks like apartments on property?
BlueSwordM said:What's probably going to kill this is shipping.
Headrc said:I sent you a PM Hans regarding your battery needs.
DarkRaven said:Well, the spec sheets are not as bad as some of the others I've seen. But it still doesn't look good.
Two aspects in particular are odd:
1. The 2600mAh model is a 4.20V cell while the 3000mAh model is a LiHV cell with 4.35V end of charge voltage.
2. The discharge currents are incredibly low. It's normal for the standard discharge because that is used to determine the nominal capacity but the max. discharge is incredibly low as well.
Given the fact that they claim that these cells come straight from their own production lines I think they are underperforming and I think it's worrying that the manufacturer a) has no confidence in his product and/or b) knows that he only makes underperforming, low quality products.
Or they don't make all of the cells themselves and put some recycled cells they've found outside other companies factory gates, you know, near the thrash bins, into the mix so you never know what you're getting and therefore they have to keep the specs low.
I wouldn't trust them for a second. This doesn't look like a quality product and I would strongly recommend not to buy these.
HansTuchel said:I guess the best might be to order a few and check them out. I believe in a 48V PowerWall setup 1C or even 0.5C should be just fine, agree?
HansTuchel said:I guess the best might be to order a few and check them out. I believe in a 48V PowerWall setup 1C or even 0.5C should be just fine, agree?