Hey battery gurus, I am trying to decide between Samsung 30q cells and LG MJ1 cells. I am interested in the MJ1 because people say it has a higher cycle life than 30Q but is that really true under our use case?
I know 30q is considered very durable compared to others but that is at 15amps. I wont be going that hard on them.
The easiest to find info shows 30q at 300 cycles and MJ1 at 400 cycles.
Although when looking at the data sheets of the two, the cycle life test have been performed at different amp levels. The MJ1 was tested at a lower amp level making it naturally have a better cycle life.
Can anyone find cycle life test for both done to the same standard?
LG MJ1 - 400 cycles, charge 1.5A, discharge 4A (80%)
Sam 30Q – 200 cycles, charge 4A, discharge 15A (80%)
Seems like the cycle life for both is close to 300 if the test was the same around 10A?
My planed use is for a commuter, each cell will be discharged regularly at 6-7a and occasional peaks of up to 10a. Charged @0.5c. Low voltage cutoff 3.3v
Although I did find this comparison from NASA although the discharge rate appears to be only 0.58A?
This is 30Q from Samsung’s data sheet, discharge at 15A and strangely charge at 4A.
Although MJ1 at 80% capacity has more left than 30Q at 80% Still I have not seen MJ1 life cycle tested at a decently high rate of draw to draw a conclusion for my usage.