At the beginning, with the DIN algorithm, the cells using
TK210 separators showed 2% additional capacity (Fig. 5).
Then, during 600 cycles, the capacity of cells with TK 210
was alternately slightly higher or lower than standard cells.
After 600 cycles, however, the capacity of cells with standard
ribbed separators started to decline, whereas cells with
TK separators recovered slightly between cycle 600 and 1300, where they only started to decline. The gain in
capacity from cycle 600 to the end of test was around
10% with Amersil new corrugated separator. These good
results are attributed to the lower electrical resistance as well
as lower acid displacement and specific wave design (higher
electrolyte available against each electrode) of the new
Amersil corrugated separator.