small update in the first post
Tabless design cylindrical cells tests
News:
- EVE 40PL (MP) cycled at nominal 0.5C-5C @ 4.20-
2.50V was halted at 300 cycles due to poor cycle life.
- BAK 45D started 3C-3C HP cycling.
- EVE 40PL (MP) started at nominal 0.5C-5C @ 4.20-
2.50V without welding (bare cell in standard 4W fixture)
Lets definitely check if spot-welding make any difference here. From the actual results after 100 cycles of EVE40PL with 2.8V LVC, I am more inclined to believe that the problem was caused by the LVC set at 2.5V. I think paradoxically the EVE40PL sample in
@CamLight torture test could help the fact that it was cycled at higher C-rate than in my 5C-rate dchg test, because higher C-rates leads to the lower actual DoD due to the DCIR effect.