Quote:
Originally Posted by Richard Wallace
..In each case the duration of the initial surge current was ~0.05 second, rising to its peak in about 0.005 second and decaying exponentially to steady value after that...
Viair 90C: initial peak surge 18 Ampere, average current draw during charging 12 Ampere, time to full charge 40 seconds.
Thomas 405ADC38/12: initial peak surge 32 Ampere, average current draw during charging 10 Ampere, time to full charge 36 seconds.
Viair 250C-IG: initial peak surge 40 Ampere, average current draw during charging 9 Ampere, time to full charge 33 seconds.
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Interesting that the efficiency correlates so well with initial peak surge. Assuming the voltage was constant at 12.5V throughout, the 90C needed 6.0 kJ, the Thomas 4.5 kJ, and the 250C-IG only needed 3.7 kJ from the battery to do the same job.