Got my 8 cells from Amy Peng at QSO yesterday and did a first inspection. Cells were "New Grade A" and shipped from a warehouse in Poland. Very fast shipping (4 days) and I got them well packed in thick foam and no visible shipping damage. Transaction and contact with seller went smooth. Cells look new and undamaged but a closer look revealed some leaking from the pressure valves on 5 of the 8 cells. One of them even had an opening in the blue cover as if it had a blow out. Have a look at the video and say what you think. Is this cell dangerous to use? Should I try putting them up side down and see if I get more out of it? The "puddle" below the blue cover is hard and not liquid. The worst cell is the last in the video from 1:00. Cells were also swollen but according to others on the forum that recently received LF280k that is the new normal(?) I did a quick video showing that also. Please have a look and say what you think about these cells. Should I proceed with a capacity test and start using them or ask for a replacement of at least the "worst" cell?
Got my 8 LF280K cells from QSO - leaking?
- Thread starter Malmen
- Start date
Quattrohead
Solar Wizard
Those cells are junk, return them.
Total $1224 with shipping within EU. Would not have been cheaper from china because Sweden will add 25% tax and some % of customs fee on both item value AND shippig cost. This is the listing https://www.alibaba.com/product-det...tails.magic-edit-release-top.1.58162b3auHoJx7
What is ESS grade? Storage grade? New grade A cells was advertised. Rejected EV cells sold for storage use I guess.
What is ESS grade? Storage grade? New grade A cells was advertised. Rejected EV cells sold for storage use I guess.
If I get 95% of rated capacity I'm totally fine with that. My concern is safety and service life. The cells obviously was abused at some time, either with heat during storage or overcharge that made them swell and "leak" through the pressure valve. The one that leaked most is my main concern. I will top balance them and test them. Maybe I get more surprises.
Agreed if the vent isn’t ruptured it’s not leaking.
I will do a capacity test as soon as I get my ECB-A20 tester. How should I compress these cells that is somewhat swollen? I will just put pressure on the bulging part if I use something rigid as isolator between cells. Rubber mat maybe helps even out the pressure? Or some kind of foam?
Alkaline
Solar Wizard
They are ok, all of mine with holes usually have some crap that gets in, this all started when eve started putting a dumbass hole in the middle. Never had this happen with my LF280N cells or even the LF280DK (pre-280N) cells.
