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Published on Feb 6, 2012
4x 1500W/120V heaters in paraller configuration. 45x Winston cells in series.
Car had stood two weeks at -25C so cells were at that temperature too. Voltage sag at 20A load was 40V, hehe. Cells warmed up in 30 minutes so heater provided some heat. After that it was real heat, even though voltage sag was still something like 20V for whole pack at 40A load.