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Suggests 30C

A123 Blurb ...copy & paste ..

Nanophosphate is a positive electrode material of remarkable rate capability, critical to high power systems. Our high power products are able to pulse at discharge rates as high as 100C and deliver unmatched power by weight or volume. With their low impedance and thermally conductive design, A123 cells can be continuously discharged to 100% depth of discharge at 35C rate, a marked improvement over other rechargeable battery alternatives.