Quattrohead
Solar Wizard
I also ended up holding the bus bars so they could not twist, maybe that's the secret.
I also ended up holding the bus bars so they could not twist, maybe that's the secret.
When I looked last night they showed the grade B as out of stock.Well shoot.. still $89 a cell. Was waiting for a few more replies as to how they turned out for those that bought them. Can someone elaborate a bit on the diff between A and B grade? Being new (are they new.. or said new but used previously) I would assume if they are same build as grade A, then what caused them to be B grade?
You can expect some swelling and slightly less capacity than grade A cells. Folks here (including me) have tested these cells at 300Ah or higher though. Swelling wasn’t too bad, varying from 1/16”-1/8”, but that’s just my experience. For the price, I think these are good value cells.Well shoot.. still $89 a cell. Was waiting for a few more replies as to how they turned out for those that bought them. Can someone elaborate a bit on the diff between A and B grade? Being new (are they new.. or said new but used previously) I would assume if they are same build as grade A, then what caused them to be B grade?
Well shoot.. still $89 a cell. Was waiting for a few more replies as to how they turned out for those that bought them. Can someone elaborate a bit on the diff between A and B grade? Being new (are they new.. or said new but used previously) I would assume if they are same build as grade A, then what caused them to be B grade?
NKON show 5000 for their b grade envision cellsWas told these were 3000 cycle cells instead of 6000 cycles that is grade A. Even at 3000 Cycles they will last a long time
NKON show 5000 for their b grade envision cells
On the grade a they stated 6000
I used finger pounds and didn't have an issue. Normally I'll torque nuts/bolts until they break then back off 1/4 turn, I gave it 3 less fingerlbs this time and didn't have any issues, so far.Y'all keep stripping the threads because you're using commie units like Nm. You wouldn't have that problem with a manly measurement like lb-ft.
Good technique.I used finger pounds and didn't have an issue. Normally I'll torque nuts/bolts until they break then back off 1/4 turn, I gave it 3 less fingerlbs this time and didn't have any issues, so far.
I was told by a seller that EV or A batteries are capable of a faster discharge (and charge?) rate.Well shoot.. still $89 a cell. Was waiting for a few more replies as to how they turned out for those that bought them. Can someone elaborate a bit on the diff between A and B grade? Being new (are they new.. or said new but used previously) I would assume if they are same build as grade A, then what caused them to be B grade?
I think B grade batteries are still capable of a fast enough discharge rate if you were to drop your torque wrench across the terminalsI was told by a seller that EV or A batteries are capable of a faster discharge (and charge?) rate.
We call that "calibrating".I think B grade batteries are still capable of a fast enough discharge rate if you were to drop your torque wrench across the terminals
Dang! that's really good. My best one tested less than 310Ah. I imagine most of it is down to difference in testing equipment, mine is definitely not lab quality.UPDATE :
Wednesday 25 Oct. Have tested 11 of 16 EVE 304Ah cells from 18650. Lowest cell capacity is 311.7 Ah, highest capacity 316.2 Ah. Will keep you posted.
a619
Dang! that's really good. My best one tested less than 310Ah. I imagine most of it is down to difference in testing equipment, mine is definitely not lab quality.
Tested my envision grade a- cells with the same tester...I am using the ZTECH EBC A40L. I have tested about 100 cells over time. Not sure if it needs calibrating. But these are the results.
houseofancients
Contemplating if I should go for the b grades or wait for the a- .
So far liking what I see from the b grades though..
Exception the terrible laser welts
I wish you would buy me 32 too.Sigh. I wish I could buy 32 more
Ha, I have the same tester. Maybe I need some calibration.I am using the ZTECH EBC A40L. I have tested about 100 cells over time. Not sure if it needs calibrating. But these are the results.
18650 is for me irrelevant..As you may remember (stated earlier), I bought the B cells from 18650, received a tracking number but three days later received a refund due to lack of inventory. The thing that scares me is the laser welds on the B cells. They gave me a good price on the EVE cells, when finished testing, I may ask for same price on another 16 EVE 304 cells. If they had Envision A cells I would be willing to go that route.
BTW, 18650 is showing the B cell Envisions IN STOCK (just checked) $89 dollars
Ha, I have the same tester. Maybe I need some calibration.
18650 is for me irrelevant..
1. They are half way around globe
2 about 30% tax and shipping would be added by the time I have the cells here
NKON is just a 30 minute drive away