DC-DC 36V 48V to 12V 20A 240W Step Down Converter Golf Cart Voltage Regulator Reducer Transformer with Fuse Waterproof

The 3” x 3” card that comes in the box shows the correct connections. The online document mixes up input / output terminology and power supply and load terminology..Expect a good spark when you connect the red and black wires to the battery source power even with no load connected to the 12V output yellow and black wires.Works fine and seems to have little or no idle current draw on the battery source.

Good quality and works well. The voltage was converted perfectly for my lights. The wires were a little short based on where I needed it to be installed but every installation is different so I knew going in I might need to add more wiring. It doesn't seem to overheat and was a good price compared to others. Install was straight forward. Does it what is supposed to!

I upgraded my 1995 EZGO TXT Golf Cart from Lead-Acid to a new 36v Lithium Battery Pack. I purchased this power convert to run my two LCD headlights. It was easy to connect and works great. The instructions, illustration card in the box, and labeling on the converter were correct and easy to follow. Several reviews say the labeling and/or instructions/illustrations are incorrect, so the manufacturer must have made corrections, as mine were correct and everything is working as designed. On mine, the red wire (with inline fuse) and black wire on the input side go to the 36-volt battery source (red +, black -), and the yellow wire and black wire on the output side go to the source to be powered by 12-volt (in my case, the lights) (yellow +, black -). It looks nice and is well-made. I would recommend this product to others.

This well-made unit works well. But read all the specifications. Notably, it’s stated “Do not connect to solar panels, PWM/MPPT charge controllers, inverters or wind turbines. In my case, the potential for 29 volts from a 24-volt solar inverter breaks the unit. If this is your need, look elsewhere. There are other converters that specify a greater voltage range up to 50 volts DC, suitable for connection to a MPPT 24 volt solar inverter.

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After 3 months still going strong with daily use. I purchased for my ebike to add 12 accessories at first I was leary and wasn't going to purchase after reading some reviews but I decided to cause I got to thinking, like most other electronics someone bought it and installed it wrong or overloaded it fried it an blamed the product, so bought and did a bench test with a voltmeter before installing and everything is still working great. It gets warm but not to hot to touch but its also exposed to a lot of moving air and and on average im only pulling have the amps then what its rated for.Tips when purchasing a buck converter:1- Buy a higher rated one then you need for 2 reasons. If all your 12v devices pull 20 amp when they are powered on get a 25-30 amp rated not a 20. First is in case you have a power surge and second it won't run as hot cause it won't be under full load.2- Make sure its wired properly, some people look at it and go "2 black negative wires and connect the 48v and 12v negative together and connect it to 48v negative power supply. Then have all the 12v devices negative tie into 48v negative. That not recommend even though it may work temporarily or fry something instantly depend on how everything else is wired but will eventually fail and can cause serious damage......especially if 48v- backfeeds to 12v- and fries buck converter and shorts 12v and/or 48v system.If not overloaded and well ventilated and wired properly it should last a while.

Not good we tested it it added a voltage instead of bringing it down to 12 volts. It made it 39 volts it blew all our lights 😡

It does supply a constant 12v @10 amp on the load tester till my battery drained. Not sure why it wouldn’t run a brushed dc motor that is 7.2v and unknown amp. Minus one star cause it didn’t run any motors rated 12v or 7.2v