What capacity do Hawker Energy (Gates) Cyclon cells have at various loads?
Glenn Wegener sent me some interesting information on a special kind of sealed lead acid battery: Hawker Energy (Gates) Cyclon cells These cells have significantly better performance than ordinary sealed lead acid batteries (SLA’s). They come in single 2 volt cells, in D size rated at 2.5 amp hours, and X size (somewhat larger than D size, but shaped like a D size cell) rated at 5.0 amp hours. The 5.0 amp hour cells can be had, Glenn tells me, for $8.00 each. Meaning a 6 volt 5 AH Cyclon battery pack will cost you $24.00 in batteries to make up (the batteries have tabs you can solder to make the three cell pack). The following table shows the degree of “degradation” of available amp hour capacity as Hawker Cyclon cells (a 5.0 amp hour one in this case) is drained at higher and higher current levels. At the extreme right in this table I show for comparison (for some of the table entries) the % degradation of amp hour capacity at that fraction of C current drain for an ordinary technolog
