In brief: Based on review measurements: Test current: RK8009 (9 A vs. 1); Efficiency: RK8009 (98.9 % vs. 78).
Model RK8009 Riden · 2026 Read review → Modern converter 2014 Read review → Test current, A 9 1 Efficiency, % 98.9 78 Review conclusion Recommended Recommended
Only in one review: Voltage 80 V (RK8009); Current 9 A (RK8009); Power 720 W (RK8009); Under load 81 V (RK8009); Ripple 50 mV (RK8009).
RK8009: The converter showed low ripple, high efficiency and good thermal performance; its main drawback is limited input-voltage headroom.
Modern converter: The modern converter measured 78% efficiency at 0.5 A and 77% at 1 A, with 9 mA no-load current.
Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.
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RK8009Riden · 2026Read review →
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