Only in one review: Voltage 42 V (Modiary MDA238 42V 2A); Current 2 A (Modiary MDA238 42V 2A); Ripple 65 mV (ZC823 v13 (ZC823P)); Protection 3.1 A (ZC823 v13 (ZC823P)); Temperature rise 100 °C (Modiary MDA238 42V 2A).
Modiary MDA238 42V 2A: A well-built charger with auto-shutoff and protection, but it sometimes fails to stop charging after reconnection.
ZC823 v13 (ZC823P): The board supports several protocols, but the author could not get the claimed 100 W; the usual maximum was 3.1 A.
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.