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 Over Discharge Protection

Product ID: 160834719

Details

Brand
Onyehn
Color
black gray
Item Weight
0.06 kg
Material
Lead
Product Dimensions
2.24"L x x

⚡12V-36V input range

🔋Precise 0.1V control accuracy

🔴3-digit LED voltage display

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Description

🔌 Protect your power, prolong your battery life — never get caught powerless again!

INSTANT LOAD DISCONNECT - Rapid relay response cuts off load at preset voltage to prevent over-discharge damage.
USER FRIENDLY INTERFACE - Onboard push button and clear 3-digit LED display make custom settings and monitoring effortless.
PRECISION VOLTAGE CONTROL - Ultra-accurate 0.1V threshold settings ensure your battery never dips too low, extending lifespan.
COMPACT EFFICIENT DESIGN - Miniature 57x42mm board with low power consumption (<1.5W) fits tight spaces without compromise.
WIDE VOLTAGE COMPATIBILITY - Seamlessly protects batteries from 12V up to 36V DC, perfect for diverse power setups.

The Onyehn 2pcs 12V-36V DC Voltage Protection Module is a compact, programmable battery low voltage disconnect switch designed for lead acid and lithium ion batteries. Featuring a precise 0.1V control accuracy and a clear 3-digit LED display, it automatically disconnects loads to prevent over-discharge, thereby extending battery lifespan. With a wide input voltage range and low power consumption, this module is ideal for professional-grade battery management in diverse DC power systems.

Specifications

ASIN	B07QNXM4LS
Best Sellers Rank	#50,798 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #33 in Electromechanical Controllers
Brand Name	Onyehn
Color	black,gray
Customer Reviews	4.2 4.2 out of 5 stars (513)
Display Type	LED
Included Components	2x Protection Module
Item Dimensions L x W x H	2.24"L x 1.65"W x 0.75"H
Item Weight	0.06 kg
Manufacturer	Onyehn
Material Type	Lead
Model	XH-M609
Number of Items	2
Number of Packs	2
Part Number	XH-M609
Unit Count	2 Count

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€ 29.55

Duties & taxes included

In stock

Sold byAmazon AustriaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Austria.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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