ALMOCN Voltage Boost Buck Module, 1500W 30A DC-DC Boost Power Converter Step-up Voltage Power Supply Module In 10~60V Out 12~90V (1500W 30A)

Warning - the description of ‘boost buck converter’ is false. It is only a boost converter (step-up, increases voltage). It is not a buck converter as well (step down, decreases voltage). I wanted it to do both, so returning it.The ‘W204’ trimmer at the output adjusts voltage - clockwise to increase.The ‘W502’ trimmer below the inductor sets constant current. Turn anti-clockwise loads (like 30 full turns) to get to minimum. It can only limit current by lowering the voltage down as low as the input voltage - no lower! So for some this might be too high.The W104 trimmer near the input sets low battery cutoff. Not tried this feature though.No instructions are provided, hence me writing my findings in this review.I only ran about 50W through it - no heat was produced and the fan remained off, so it was barely breaking a sweat. It seems like a decent unit, shame I have to return it due to false advertising!

Good but the voltage rises at high load

This is the dogs danglies!!!!!If you want a buck converter that is tough enough for the job, then this is definitely it. Mint A+++