What do I need to be able to use as a switch between batteries and a 2000 watt inverter?

If all you want to do is disconnect/connect the batteries from the inverter remotely, you need a 12v switched source to the coil and a ground. It is just a single pole single throw switch.

The note "The working time could be around continuous four or five hours , stop it and then use it." What if I have a 8 hour road trip?

I took a road trip 24hrs one way drove 18 hrs the first day 6 hrs the second day then turn around 4 days later repeated in the middle of summer with no problem the relay i replaced was the same make and model butI probably not the original in my 1995 Chevy conversion van relay is for charging my back battery also left it running for 8hrs plus in 90- 100 degrees so my pets saying cool inside hope this helps

Can us you be used for a plow

I believe this should work for a plow setup. Just double check the amp draw from the plow’s specs.

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MaySpare 80-Amp 12V Continuous Duty Solenoid Battery Isolator and Starter Relay - White 4 Pin SPST

MaySpare 80-Amp 12V Continuous Duty Solenoid Battery Isolator and Starter Relay - White 4 Pin SPST

Product ID: 123043634

Details

Connector Type
Screw
Contact Material
Copper Silver
Contact Type
Normally Open
Current Rating
80 Amps
Mounting Type
Screw Mount

⚡80A continuous current

🔥500A surge max amps

🔧100,000 mechanical cycles

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S/.141

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Details

Connector Type
Screw
Contact Material
Copper Silver
Contact Type
Normally Open

Description

⚡ Power your dual-battery system with unstoppable reliability!

BUILT TO LAST - Engineered for 100,000 mechanical cycles—reliability that outlasts your toughest projects 🔧
POWER THROUGH PEAKS - Handles up to 500A surge current for those high-demand moments ⚡🔥
PLUG PLAY INSTALLATION - Includes all necessary terminals and insulated caps for quick, hassle-free setup 🔩
PREMIUM CONTACT MATERIALS - Copper contacts with silver pins ensure superior conductivity and minimal power loss ⚡
SEAMLESS DUAL BATTERY CONTROL - Effortlessly isolate and manage double battery systems with a simple on/off switch 🔋

The MaySpare 80-Amp 12V Continuous Duty Solenoid Battery Isolator and Starter Relay is a robust, high-performance electrical switch designed for dual battery management. Featuring an 80A continuous current rating, 500A surge capacity, and a remarkable 100,000 mechanical cycle lifespan, it ensures dependable operation in demanding automotive and power applications. Constructed with copper contacts and silver pins for optimal conductivity, it comes complete with installation hardware for seamless integration.

Specifications

ASIN	B07MV4WJ7K
Best Sellers Rank	#43,294 in Automotive ( See Top 100 in Automotive ) #16 in Automotive Replacement Starter Solenoids
Brand	MaySpare
Brand Name	MaySpare
Coil Resistance	18 Ohms
Coil Voltage	12 Volts
Connector Type	Screw
Contact Current Rating	80 Amps
Contact Material	Copper Silver
Contact Type	Normally Open
Current Rating	80 Amps
Customer Reviews	4.4 out of 5 stars 467 Reviews
Manufacturer	May Spare Parts
Maximum Switching Current	1 Amps
Minimum Switching Voltage	13 Volts (DC)
Model	US-4t500A
Mounting Type	Screw Mount
Operation Mode	Continuous Duty
Part Interchange Info	SGP38,6C017,120-901,120-105751,120-105751-6,120-901S1
Part Number	US-4t500A
Specification Met	OEM
UPC	754111153130
Upper Temperature Rating	80 Degrees Celsius
Wattage	2000 watts

Reviews

A**R

23.02.2026

D**N

19.11.2025

B**R

19.07.2025

J**K

6.09.2025

P**X

9.07.2025

D**D

2.04.2025

B**H

4.01.2025

T**R

12.05.2023

P**G

11.06.2021

C**N

21.12.2022

A**X

19.09.2022

M**.

17.01.2023

C**Y

26.06.2024

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

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