I purchased this as a step down from my 24V Lifepo4 to 12v. It worked for around 1 hour then my Fish Finder and USB charger showed the voltage dropped to 11-10.x V. I'm not sure if my units are taking too much power or draw so I ordered another one doubling the AMP and Watts. I will do an update once i find out if the new unit does the same.
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