In brief: Based on review measurements: Test current: USB DC-DC board, type one (3.2 A vs. 2.8).
Model USB DC-DC board, type one 2019 Read review → USB DC-DC board, type two 2019 Read review → Voltage, V 5 5 Current, A 3 3 Test current, A 3.2 2.8 Review conclusion Recommended With reservations
Only in one review: Ripple 110 mV (USB DC-DC board, type two).
USB DC-DC board, type one: Type one handles more current, runs cooler and has less ripple; the author explicitly recommends it.
USB DC-DC board, type two: Type two works but overheats, is limited to about 2.8 A, and has worse efficiency and ripple than type one.
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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USB DC-DC board, type one2019Read review →