can I add a 12 volt alternator or charger to the output to charge the 24 volt supply battery?

This converts 24v to 12v not the other way around. Now as far as your question. If you have 12v battery's wired in Series to make it a 24v battery then yes you can use a 12v alternator to charge your battery's. Personally I wouldn't buy this unit again as It burnt up upon 1st use.

Do you have to install a switch between the converter and the battery to stop battery drain or will the batteries be ok hooked straight in line?

The drain current is less 0.04A. Thanks.

What is the voltage out? 12 Volts or 13.8 Volts. Can it be adjusted?

This output is 12V and the voltage can't be adjusted.

If the output short circuits does the unit protect itself or should I add a fuse?

You could add a fuse, but in fact, it's no need. Thanks.

24v To 12v 60a 720w Dc Dc Step Down Converter

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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S/.743

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Sold byAmazon PeruDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power your gear with precision and confidence — no compromises, just pure voltage mastery!

SAFETY FIRST - Integrated overcurrent, overvoltage, and overtemperature protections with built-in fuse for peace of mind.
BUILT TO ENDURE - IP68-rated waterproof aluminum casing protects against harsh environments and extreme temps (-40°C to 85°C).
COMPACT LIGHTWEIGHT - Sleek 160x113x35mm design weighing just 1kg fits seamlessly into your professional setup.
POWERHOUSE EFFICIENCY - Up to 97% energy conversion keeps your devices running cooler and longer.
ROCK SOLID RELIABILITY - 4x quality inspections plus burn-in testing ensure consistent, stable voltage output.

This Daygreen 24V to 12V DC-DC step-down converter delivers a robust 720W output at up to 60A with 97% efficiency. Engineered with a waterproof IP68 aluminum shell and multiple safety protections, it ensures stable, reliable voltage regulation for vehicle batteries powering 12V appliances. Ideal for professionals demanding durability and performance in compact form.

Specifications

ASIN	B078VQGPYS
Best Sellers Rank	#710,253 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3,254 in Power Converters
Brand	Daygreen
Color	Silver
Customer Reviews	3.4 out of 5 stars 8 Reviews
Input Voltage	35 Volts
Item Dimensions	3.94 x 3.15 x 1.57 inches
Item dimensions L x W x H	3.94 x 3.15 x 1.57 inches
Manufacturer	Daygreen
Mfr Part Number	24V TO 12V
Model Number	B40-24-12A
Number of Outlets	1
Output Voltage	12 Volts
Power Source	Battery Powered
UPC	641055151240

Reviews

M**2

Zero supporting documentation

No instructions, specifications, application limits, warnings or wiring diagrams. Just the converter and a loose jumper clip thrown in the box. Typical product from China.

7.01.2019

A**.

Not working

I usually plug any new electronic device into the electricity hours before I connected to another device So I connect the device to 24v Battery and check the voltage output is 13.3v and keep few hours and check the device is heating normal but no output power

21.01.2023

G**N

Works great! Easy setup

Very easy to set up. Well labeled. Works great, haven't had any issues.

9.08.2021

A**S

Bueno

Buena invención

28.07.2019

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