Top 10 Best low voltage cutoff in 2026

Last Updated - 6/9/2026

🏆Best Choice

Onyehn

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

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•🌟Board Size: 57 X 42 X 19mm/2.24 X 1.65 X 0.75inch(L*W*H), Input Voltage Range: DC12-36V, Control Accuracy: 0.1V, Power Consumption: <1.5W, Instantaneous maximum current before circuit breaker trip: 20A.
•🌟Note:Due to the limitation of the size of the PCB board, the relay size of this module is mini and the circuit lines are very thin. The current should not be too large during actual use. If the current exceeds 8A, the relay contacts may be blown and cannot be used normally.The maximum current is 10A when the voltage is below 12V, and less than 8A when the voltage exceeds 12V
•🌟Programmable battery low voltage disconnect switch for DC12-36V lead acid battery and lithium ion battery. It's a protection switch module, not included batteries itself.Compatible Battery: lead acid, lithium ion battery, solar panel battery.Not suitable for battery packs.
•🌟On-board momentary push button to set the low voltage disconnect parameter and 3 digit red LED display the parameter easy to operation.When the battery voltage reach the setting values, the module will disconnect load automatically to aviod the battery from over discharging to prolong the battery lifetime. (Note:The relay does not contain a power cut-off switch,remember to cut off the power supply after disconnection, otherwise the module will continue to use the battery until the voltage is 0.)
•🌟Reset:When the power is off, press and hold the two buttons at the same time, and then power on. At this time, the screen displays "888", indicating that the factory settings are restored.The factory-set protection value: 12V, difference value: 2V.Difference Value"is the value between the battery voltage to disconnect and the battery voltage to reconnect.
•🌟Display is accurate, the switch module is quickly to open and close when near minimum voltage; Settings is stored non-volatile, it can keep set when power off

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$12.99

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Digital Low Voltage Protector Disconnect Switch Cut Off 12V Over-Discharge Protection Module for 12-36V Lead Acid Lithium Battery Low Voltage Cutoff for Solar Panel Lighting System

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•NOTE: This product is a voltage controller, which turns on and off the output through a relay, which only acts as a switch and cannot change the voltage. It's a protection switch module, not included batteries itself.
•OVER DISCHARGE PROTECTION: This battery controller provides a high degree of flexibility in terms of discharging modes and parameter settings. Users can easily set the parameter to disconnect the battery automatically when it reaches a preset voltage, thus preventing over-discharging and extending battery life. With its customizable parameters, this battery controller allows users to tailor their power management system to their specific needs and preferences.
•MEMORY FUNCTION: With power-off protection, it will save your settings in the event of an unexpected loss of power. This feature is crucial for electronic devices that require specific configurations, as it prevents the loss of critical data and allows you to resume work where you left off.
•DELAY TURN-ON: That means, after a disconnect, the interval between turning on again. The time range that can be set is 0-999 seconds
•PARAMETER: Board Size: 57 x 42 x 19mm/2.24 x 1.65 x 0.75inch(L*W*H); Input Voltage: DC 12-36V; Accuracy: 0.1V; Power Consumption: <1.5W; Maximum Amperage before Breaker Trips: 20A

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$15.99

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Seloky

SELOKY 12V-36V DC Voltage Protection Module Digital Low Voltage Protector Disconnect Switch Cut Off Over Discharge Protection Module Pack of 2

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•OVER-DISCHARGE PROTECTION: This battery controller offers extensive flexibility in discharging modes and parameter settings. Users can configure parameters to automatically disconnect the battery when it reaches a preset voltage, thereby preventing over-discharge and extending battery life (Note:The relay does not contain a power cut-off switch,remember to cut off the power supply after disconnection, otherwise the module will continue to use the battery until the voltage is 0.). The customizable parameters enable users to tailor their power management system to specific requirements and preferences
•SIMPLE OPERATION: To restore factory settings, power off the device, press and hold both buttons simultaneously, and then power on. The screen will display "888," indicating that the factory settings have been restored. The default protection value is set at 12V with a difference value of 2V. The difference value represents the voltage range between disconnecting and reconnecting the battery. User settings are retained in the event of an unexpected power loss, ensuring critical data is preserved and allowing seamless resumption of operations
•SCOPE OF APPLICATION: This device is a voltage controller that employs a relay to switch the output on and off. The relay functions solely as a switch and does not alter the voltage. It is a protective switching module and does not include batteries. Compatible batteries include lead-acid, lithium-ion, and solar panel batteries. This module is not suitable for battery packs
•PARAMETERS: Board Size: 57 x 42 x 19 mm (2.24 x 1.65 x 0.75 inches) LxWxH; Input Voltage: DC 12-36V; Accuracy: ±0.1V; Power Consumption: <1.5W; Maximum Current before Breaker Trips: 20A
•NOTE: Due to the size constraints of the PCB board, this module features a miniaturized relay and thin circuit lines. Therefore, the current during actual use should not exceed 8A to prevent damage to the relay contacts. The maximum current is 10A when the voltage is below 12V, and it should be less than 8A when the voltage exceeds 12V

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$9.99

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Cywhrvzsf

12-36V Low Voltage Digital Protector Disconnect Switch Cut Off Lithium Battery Over Discharge Protection Module Pack of 2

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Product Information: Input Voltage: DC 12-36V,Control Accuracy: 0.1V, Maximum Amperage Before Breaker Trips: 20A,Power Consumption: Less than 1.5W,Size: 2.24*1.65*0.75 inch
•Accurate Display: Cywhrvzsf switch module will turn on or off quickly when it is close to the lowest voltage, Cywhrvzsf module has non-volatile storage of settings,it can still be maintained after a power off
•Function：Cywhrvzsf protection switch module is a programmable battery low voltage disconnect switch module for DC 12-36V lead acid and lithium ion batteries, battery not included
•Extend Battery Life: When the battery voltage reaches the set value, the Cywhrvzsf module will automatically disconnect the load to avoid over-discharge of the battery and prolong the battery life. The Cywhrvzsf module has a momentary button to set the low voltage disconnection parameters and 3-digit red LED display parameters, Easy to operate
•[Satisfactory Service]: We Provide 24-hour online service,If you encounter any problems, Please email SELLER SUPPORT (Not Amazon support), we will give you a perfect solution.

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$11.99

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LYLANMO

LYLANMO 2PCS DC Voltage Protection Digital Low Voltage Protector Disconnecting Switch Cut-Off Over-Discharge Protection Module for 12-36V Lead Acid Lithium Battery

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•PARAMETERS: Board Size: 57 x 42 x 19 mm (2.24 x 1.65 x 0.75 inches) LxWxH; Input Voltage: DC 12-36V; Accuracy: ±0.1V; Power Consumption: <1.5W; Maximum Current before Breaker Trips: 20A
•PREVENTING OVER-DISCHARGE: This battery controller provides extensive flexibility in discharging modes and parameter settings. Users can set parameters to automatically disconnect the battery when it reaches a preset voltage, thus preventing over-discharge and prolonging battery life (Note: The relay doesn't have a power cut-off switch. Remember to cut off the power supply after disconnection; otherwise, the module will continue to use the battery until the voltage is 0.). The customizable parameters allow users to adapt their power management system to specific needs and preferences
•EASY OPERATION: To restore factory settings, turn off the device, press and hold both buttons simultaneously, and then turn it on. The screen will show "888", indicating that the factory settings have been restored. The default protection value is set at 12V with a difference value of 2V. The difference value represents the voltage range between disconnecting and reconnecting the battery. User settings are retained in case of unexpected power loss, ensuring critical data is saved and allowing for seamless resumption of operations
•Application Scope: This device is a voltage controller that uses a relay to switch the output on and off. The relay only acts as a switch and doesn't change the voltage. It is a protective switching module and doesn't include batteries. Compatible batteries include lead-acid, lithium-ion, and solar panel batteries. This module isn't suitable for battery packs
•NOTE: Due to the size limitations of the PCB board, this module has a miniaturized relay and thin circuit lines. Therefore, the current during actual use should not exceed 8A to avoid damage to the relay contacts. The maximum current is 10A when the voltage is below 12V, and it should be less than 8A when the voltage exceeds 12V

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$9.99

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Low Voltage Disconnect, ICSTATION DC 6V-60V 30A Charging Discharging Protection Board with LCD Display Low Voltage Protector Disconnect Switch Module for Lead Acid Lithium Battery

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•NOTE: This product is a voltage controller, which turns on and off the output through a relay, which only acts as a switch and cannot change the voltage. In addition, if you have any questions in use, please let us know.
•CHARGE AND DISCHARGE PROTECTION: You can choose the charging or discharging mode and set parameters as desired. As an example, the module will automatically disconnect when the battery voltage reaches the predetermined level to prevent over-discharging and extend the battery's lifespan. Furthermore, you can also configure the charging and discharging time according to your requirements.
•LCD SCREEN: In contrast to other LED display modules, this protective module includes an LCD high-definition screen that can accurately present voltage levels, percentage of voltage remaining, and time.
•30A CURRENT: With 30A high current relay, suitable for any 6-60V variety of batteries and Lithium batteries
•DELAY TURN-ON: That means, after a charge or discharge, the interval between turning on again. The time range that can be set is 0-999 seconds

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$16.99

$17.99

-6%

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Seloky

SELOKY 2pcs 12V-36V DC Digital Low Voltage Protector Disconnect Switch Cut Off Over Discharge Protection Module for Lead Acid Lithium Battery Solar Panel Lighting System

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•VOLTAGE THRESHOLD SAFEGUARD: Over-Discharge Protection: This battery management module provides a wide range of adjustability for discharging modes and parameter configurations. Users can define parameters to automatically disconnect the battery upon reaching a preset voltage threshold, effectively preventing over-discharge and prolonging battery lifespan (Important: The relay lacks an integrated power cutoff mechanism. Always manually cut off the power supply post-disconnection; failure to do so will drain the battery to 0V). Its customizable parameters allow precise adaptation of the power management system to unique operational needs and user preferences
•SIMPLIFIED FUNCTIONALITY: To reset to factory defaults, turn off the device, press and hold both buttons together, then power it back on. The display will show “888” to confirm factory settings restoration. By default, the protection voltage is preset to 12V, paired with a 2V differential value, which defines the voltage gap required to disconnect and later reconnect the battery. In case of sudden power interruption, the system retains user-configured settings, safeguarding critical data and enabling uninterrupted workflow continuity upon reboot
•FUNCTIONAL COVERAGE: This module operates as a voltage controller utilizing a relay-based mechanism to switch output power on/off. The relay serves exclusively as a switching component, maintaining the original voltage level without modification. Designed as a protective switching module, it does not integrate batteries. It is compatible with lead-acid batteries, lithium-ion batteries, and solar panel batteries (single units only)
•PARAMETERS: Board Size:Board Dimensions: 57×42×19 mm (2.24×1.65×0.75 in, L×W×H); Input Voltage Range: DC 12–36V; Voltage Measurement Precision: ±0.1V; Energy Consumption: <1.5W under full load; Maximum Load Current: 20A (circuit breaker activation threshold)
•NOTE: The miniaturized relay and thin circuit lines implemented in this module are a direct result of PCB board size constraints. To prevent irreversible relay contact damage, operational current must be strictly limited to 10A for systems below 12V and 8A for voltages exceeding 12V. Adherence to these thresholds is mandatory to ensure safe functionality under all conditions

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$8.99

$9.99

-10%

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2 PCS Low Voltage Cutoff, Icstation DC 12V-36V 20A Over Discharge Protection Low Voltage Protector Disconnect Switch Module for Lead Acid Lithium Battery Solar Panel Light

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•NOTE: This product is a voltage controller, which turns on and off the output through a relay, which only acts as a switch and cannot change the voltage. In addition, if you have any questions in use, please let us know at the first time.
•OVER DISCHARGE PROTECTION: This battery controller provides a high degree of flexibility in terms of discharging modes and parameter settings. Users can easily set the parameter to disconnect the battery automatically when it reaches a preset voltage, thus preventing over-discharging and extending battery life. With its customizable parameters, this battery controller allows users to tailor their power management system to their specific needs and preferences.
•MEMORY FUNCTION: With power-off protection, it will save your settings in the event of an unexpected loss of power. This feature is crucial for electronic devices that require specific configurations, as it prevents the loss of critical data and allows you to resume work where you left off.
•DELAY TURN-ON: That means, after a disconnect, the interval between turning on again. The time range that can be set is 0-999 seconds
•PARAMETER: Board Size: 57 x 42 x 19mm/2.24 x 1.65 x 0.75inch(L*W*H); Input Voltage: DC 12-36V; Accuracy: 0.1V; Power Consumption: <1.5W; Maximum Amperage before Breaker Trips: 20A

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$19.99

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Low Voltage Disconnect, ICSTATION DC 6V-60V 20A Charge and Discharge Controller Low Voltage Cutoff Battery Overcharge Overdischarge Protector for Lithium Lead Acid Battery

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•【NOTE】This product is a voltage controller, which turns on and off the output through a relay, which only acts as a switch and cannot change the voltage.
•【CHARGE AND DISCHARGE PROTECTION】You can choose the charging or discharging mode and set parameters as desired. As an example, the module will automatically disconnect when the battery voltage reaches the predetermined level to prevent over-discharging and extend the battery's lifespan. Furthermore, you can also configure the charging and discharging time according to your requirements.
•【LCD SCREEN】In contrast to other LED display modules, this protective module includes an LCD high-definition screen that can accurately present voltage levels, percentage of voltage remaining, and time.
•【20A CURRENT】With 20A high current relay, suitable for any 6-60V variety of batteries and Lithium batteries
•【DELAY TURN-ON】That means, after a charge or discharge, the interval between turning on again. The time range that can be set is 0-999 seconds

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$18.99

$19.99

-5%

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Walfront

XH-M609 Digital Low Voltage Disconnect Module, Over Charge/Discharge/Current and Short Circuit for 12-36V DC Battery

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•CONVENIENT: When the battery is under voltage loss or low battery, low voltage protector disconnect switch will be automatically disconnected.
•MAIN FUNCTIONS: Over protection, over discharge function, short circuit function, over current function.
•The voltage module made of high-quality materials, which is and has a long service life.
•PRACTICAL: The over discharge module can effectively protect the circuit, and the method of use is convenient and practical.
•APPLICATION: The low voltage disconnect module is suitable for a variety of batteries and lithium batteries, with wide range of applications.

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$7.90

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