48V to 12V DC/DC Converter Project Build

If I were doing this project again, this is the unit I would use. It puts out 13.8V which is a better match for most 12V devices. This is a great solution for running 12V devices on your 48V system. It can take an input from 38V to 60V. It is rated for a 30A 414W output.

This is the converter I used in the video for running 12V devices on my 48V system. It can take an input from 30V to 60V. It is rated for 20A 240W. Us this one if you need exactly 12V.

Great simple outlet set for 12V systems. USB ports capable of 40W output.

Low cost Fuse Block

Larger optional fuse block for 12V circuit management.

Use this breaker as an on off switch for the dashboard and to protect the extension cord.

Assortment of adhesive lined shrink tubing in red, blue, and yellow, with butt, fork, hook, ring, and quick disconnects. Great to have on hand for low voltage wiring.

Fine stranded tinned copper wire with silicone insulation. Great to work with, multiple sizes available.

Great connectors. Good for 60A loads.

This is the exact same inverter as the standard Multiplus II except it is UL listed. If you need to get an inspection, you will want this version. One difference between the two is it has a larger wiring compartment, which is worth the extra $70 in my opinion.

Power Queen is the budget option. This is the lowest $/Watt server rack battery. This is the no frills budget option. Includes circuit breaker BMS and high temp protection. Does not include, low temperature protection, interface screen or communication ports. All batteries have free shipping, plus for 3% off Site wide, use code: Everyday3

Best value solution. Quality construction. No screen interface. Built in BMS with temperature sensors.

Quality construction. Built in BMS with temperature sensors and built in pre-charge circuit. Built in screen for easy monitoring and control. Best 48V battery for serviceability. All cells have bolted connections. If you are just getting one battery and don't want to have a separate battery monitor this is the best solution. This battery is UL1973 & UL9540A certified, UL9540 pending.

Great quality fuse for medium size projects, comes with holder and 2 fuses. Be sure to choose the 58V version for 48V server rack projects.

Good pricing on quality cables made-to-order cables and lug sizes.

This is a great kit to make your own cables if you have a crimping tool.

Quality lugs, choose the size and quantity you need. I used 1/0 Battery Cable Lugs 5/16″ for this project.

Bundle & Save

This tool works great, it's my new favorite wire-stripping tool.

This ratcheting crimper works great for crimping 22awg - 12awg wire terminals.

This tool is fast, makes a great crimp and doesn't require swapping dies.

If you are interested in the tools I use here is a link.