I have 20v input and want 6v output can you set the output voltage? I need low voltage protection and the ability to step down the voltage.

What you need is called a "buck". There are 3 kinds: step-up, step-down and step-up/down. I use a step up/down buck with this low-voltage cutoff module. As the output voltage from the LiPo battery that I'm using drops from 12.4V at fall charge to 10.4V at minimum operating voltage, the buck maintains a constant 12.0V to the powered device. When the battery reaches it's minimum recommended operating voltage of 10.4V, the low-voltage cutoff module cuts off power to prevent the battery from further discharging. LiPo batteries can be permanently damaged if they fall below about 9V output (and they're expensive to replace!)

I can connect this to a li ion battery and it will output enough power for a 300w inverter? Something like 25 amps?

In your scenario, you would use this module to control a higher amperage relay that can handle the higher load. Just connect the output of the protection module to the control terminals of the larger relay.

Why is imput voltage 12-36 but output is 6-60V? Can this be used with 56V battery?

Grammatical error, 36v max, in you're case it it will work if you have access to the connections of the individual cells or banks

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2pcs 12V-36V DC Voltage Protection Module Digital Low Voltage Protector Disconnect Switch Over Discharge Protection Module

2pcs 12V-36V DC Voltage Protection Module Digital Low Voltage Protector Disconnect Switch Over Discharge Protection Module

Product ID: 373314962

Details

Brand
Onyehn
Colour
red
Item weight
0.06 Kilograms
Material
Lead
Product dimensions
5.7L x 4.2W x

⚡12-36V DC input range

🔋20A max current breaker

🔴3-digit red LED display

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Protect your power, prolong your potential.

DUAL MODULE PACK - Two protection modules included for versatile or backup use—double the safety.
COMPACT LIGHTWEIGHT - 57x42x19mm size fits seamlessly into tight setups without bulk.
SMART AUTO DISCONNECT - Automatically cuts off load at preset voltage to prevent over-discharge damage.
USER FRIENDLY INTERFACE - Onboard push button and clear LED display make customization effortless.
PRECISION VOLTAGE CONTROL - 0.1V accuracy ensures your batteries never dip too low, maximizing lifespan.

This 2-pack DC voltage protection module safeguards 12-36V lead acid and lithium ion batteries by automatically disconnecting loads at low voltage thresholds with 0.1V precision. Featuring a compact design, 3-digit LED display, and programmable settings, it prevents over-discharge to extend battery life—ideal for solar setups and portable power systems.

Specifications

ASIN	B07QNXM4LS
Brand Name	Onyehn
Color	red
Customer Reviews	4.3 4.3 out of 5 stars (475)
Display Type	LED
Included Components	2x Protection Module
Item Dimensions L x W x H	5.7L x 4.2W x 1.9H centimeters
Item Weight	0.06 Kilograms
Manufacturer	Onyehn
Material Type	Lead
Model	XH-M609
Part Number	XH-M609
Smart Home Compatibility	Not Smart Home Compatible

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