Neosignal Electronics and parts from AliExpress, measured before listing

DC-DC Buck Boost Converter Module 5.5-30V to 0.5-30V 4A 35W Adjustable Step

$4.58 $9.54

Sold 4.5k
Rating 98.0% consistent
Seller Stone's Store 6 photos
Power 35W
Voltage 30V
Listed as adjustable
View on AliExpress

We have not handled this item. The figures above are the seller's record on AliExpress, not our assessment of quality — see how we pick. Delivery time and shipping cost vary by seller.

Rated at 30V

High-voltage rating. This is where component authenticity matters most: a capacitor or isolation part marked above its real rating fails in a way that is dangerous rather than inconvenient.

Rated for 35W

Enough for small motors, LED runs, and charging circuits. Ratings at this level assume adequate cooling — check whether a heatsink is included or expected.

The seller describes it as adjustable

These are the seller's own words rather than a verified specification. Some are checkable on arrival — whether a thing folds, whether a magnet holds — and some are not. Claims about water resistance and load capacity are the ones most often overstated, because the buyer usually discovers the truth long after the dispute window has closed.

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