---
product_id: 276482378
title: "is Digital Low Voltage Protector Dconnect Switch Cut Off 12V Over-Dcharge Protection Module for 12-36V Lead Acid Lithium Battery Low Voltage Cutoff for Solar Panel Lighting System Camper"
brand: "is"
price: "€ 32.56"
currency: EUR
in_stock: true
reviews_count: 5
category: "Is"
url: https://www.desertcart.es/products/276482378-is-digital-low-voltage-protector-dconnect-switch-cut-off-12v
store_origin: ES
region: Spain
---

# 0-999s delay turn-on 12-36V input range 20A max current cutoff is Digital Low Voltage Protector Dconnect Switch Cut Off 12V Over-Dcharge Protection Module for 12-36V Lead Acid Lithium Battery Low Voltage Cutoff for Solar Panel Lighting System Camper

**Brand:** is
**Price:** € 32.56
**Availability:** ✅ In Stock

## Summary

> 🔌 Protect your power, prolong your freedom.

## Quick Answers

- **What is this?** is Digital Low Voltage Protector Dconnect Switch Cut Off 12V Over-Dcharge Protection Module for 12-36V Lead Acid Lithium Battery Low Voltage Cutoff for Solar Panel Lighting System Camper by is
- **How much does it cost?** € 32.56 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/products/276482378-is-digital-low-voltage-protector-dconnect-switch-cut-off-12v)

## Best For

- is enthusiasts

## Why This Product

- Trusted is brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Memory Retention:** Settings saved even after power loss—no need to reset your protection parameters.
- • **Compact & Lightweight:** Small 57x42x19mm footprint fits easily into any solar or camper power setup.
- • **Customizable Delay Timer:** Avoid rapid cycling with adjustable 0-999 second delay before reconnecting load.
- • **Precision Voltage Control:** Set exact low-voltage cutoffs with 0.1V accuracy to protect your battery life.
- • **Universal Battery Compatibility:** Works seamlessly with 12-36V lead acid and lithium batteries for versatile applications.

## Overview

The Digital Low Voltage Protector Dconnect Switch is a compact, high-precision battery protection module designed for 12-36V lead acid and lithium batteries. It automatically disconnects loads at preset voltages to prevent over-discharge, extending battery lifespan. Featuring a memory function to retain settings after power loss and an adjustable delay timer to prevent rapid on/off cycling, it supports up to 20A current and is ideal for solar panel systems, campers, and portable power setups.

## Description

Icstation digital battery overdischarge protection switch is specially designed for 12-36V lithium and lead acid battery. This is a low voltage protection module, not included batteries itself. On-board momentary push button to set the low voltage disconnect parameter, 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. Specifications: Input Voltage Range: DC12-36V Control Accuracy: 0.1V Compatible Battery: lead acid, lithium ion battery, solar panel batteryBoard Size: 57 X 42 X 19mm/2.24 X 1.65 X 0.75inch(LWH) Package Included: 1X Lead Acid Lipo Battery Charge Controller Operation Instructions: : short press display the low voltage protection parameter, long press to change the protection parameter -: short press to display the difference value, long prss to change this parameter. e.g. battery voltage lower than 11V will stop ouput and higher than 11.6V start output.long press "" and set it as 11, then long press "-" and set it as 0.6V. ----------------------------- Note ----------------------------- 1, It can only work with a single battery, not work well with the battery in parallel(battery pack). Most big batteries are made of many small batteries inside, such as Mil-waukee/ De-walt battery. So we don't recommend you to use it with these batteries.

Review: I hooked up this handy little gadget to the battery backup system we use to power my camper when we don't have grid power. The little relay on this circuit board can't handle the current that my inverter draws; so i simply connected this cut-off device to a hefty 250A relay which switches my inverter on or off. Now, when my battery drains below a pre-determined voltage, this little device turns off my big relay which, in turn, cuts off power to my inverter. (So, i no longer have to worry about draining my battery below a certain depth of discharge.) The other nice feature about this thing is the "differential" setting. I've now set the device to shut off at 11.4v and not kick back on until the battery reaches 12.6v. ONE LITTLE NUANCE: According to my multimeter, this thing reads about 0.2 or 0.25 volts less than the actual measured voltage of the battery. So i had to accommodate for this error factor when i set it up. I want it to cut off at 11.4 volts, so i set the cut-off voltage to 11.2. I want it to kick back on after the battery has reached 12.6 volts; but, because this thing is apparently off by 0.2, i therefore want it to kick back on at 12.4. The "difference" between 12.4 and 11.2 is 1.2. So that’s where I set the “differential” setting.
Review: This device is intended to prevent over-discharge of the battery (or batteries) in a system like a solar panel-charged battery bank. Rechargeable batteries of any type can be damaged by being overly discharged in use. There are such things as "deep cycle" batteries, which are more resistant to these problems, but they still have a minimum voltage to which they can repeatedly be discharged without causing permanent damage. This module is a very simple, but very capable, device which basically allows the user to set a minimum voltage, and when the battery voltage drops below that value, it cuts off the output of the battery, shutting down the powered system. I set it up in a test circuit with a variable voltage power supply, to see how well it worked, before using it in my actual circuitry, and was able to verify that this module did exactly what it's intended to do. Then I set it up in a battery capacity testing system, to be used to verify the condition of an aircraft battery. I was interested in applying a moderately heavy load to a fully-charged battery. I wanted to discharge the battery to a reasonable point, but then shut off the load so as not to damage the battery. I was interested in monitoring the capacity of the battery to power that load, while not hurting it. I set the module to allow the battery to discharge to 10 volts. The fully charged battery had an open-circuit voltage of 12.6 volts. I then applied a 100W resistive load (just under 8 amps at the beginning). I monitored the time it took to drop from 12.6 to 10 volts, and then looked at the time it took to do that, using another electrical timer. This allowed me to leave the testing setup alone, without worrying that I would over-discharge the battery. It worked exactly as it was supposed to. As the voltage fell about .1 volts below 10 volts, the relay on the unit opened, and shut off the load. The other setting, the "difference value" keeps the circuit from cycling quickly after the load is removed. As the battery hits 10 volts, it shuts off. That immediately allows the voltage on the battery to increase, due to the loss of the load. If it did not have this "difference setting", that alone might allow it to reset and turn the circuit back on again. This would cause it to cycle off-on-off-on for a while, until the battery didn't recover to above the 10 volt setting. This behaved exactly as I needed for my intended use. If one was using this as it's intended for, in a solar system, for example, without the "difference setting", as soon as the battery output was shut off, when solar charging started again, it would immediately turn on the load again, and the battery wouldn't charge. One would use this device to ensure that the battery (or bank of batteries) is charged above the desired voltage before the load was again enabled. For example, as the system was used to power, say a small lighting system, or a waterfall pump, when the battery falls to below the set minimum safe level you choose, say 9 volts for a deep-cycle battery, it would disconnect the load. You could set the "difference value" to 4 volts. The next day, when the sun came out, the battery would charge, without powering the load, until it reached a level of 13 volts. The load would then be enabled, and if needed power would flow again to the load. Then, when the sun goes down, it would continue to power the load, until the battery reached 9 volts again, when the load would again be disconnected, and the cycle would repeat. This device seems to be very stable. It has a voltage display (red LED digits) to show the battery voltage. I found this to be very accurate, at least within .1 volt DC. And the battery/load cutoff is also very accurate, again within no more than .1 volt DC. The same display is used with the two switches to select and set the minimum voltage and the "difference value". You select "min voltage" by holding the left switch until the display flashes, and then use the two switches to set the value, up or down. When you leave it alone for a few seconds, it reverts back to the normal monitoring mode, and indicates the battery voltage again. You do the same thing with the right switch, to set the "difference value". It's pretty easy to set up once you figure this little finger dance out. It's not that tough, and you will likely only need to do it once. There is a small red LED that lights whenever the relay is energized (ON) and the load enabled. When it trips and turns off the relay/load, the LED is off. So you can tell at a glance what the status of the load is, and at the same time, what the battery voltage is at any given moment. Basically, the thing just works. The setting is persistent, in that it stays after power is disconnected until you manually change it. If you have a need for such a module, you can't beat this to control a moderate load. The relay is marked as being rated for a 20A load. It can handle a battery voltage up to 36 volts.

## Features

- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07929Y5SZ |
| Item model number | Digital Battery Low Voltage Protection |
| Manufacturer | icstation |
| Product Dimensions | 5.69 x 4.19 x 1.91 cm; 18 g |

## Product Details

- **Connector type:** Plug In
- **Contact type:** Normally Closed
- **Current rating:** 20 Amps
- **Operating voltage:** 36 Volts
- **Operation mode:** Automatically,Off,Push Button

## Images

![is Digital Low Voltage Protector Dconnect Switch Cut Off 12V Over-Dcharge Protection Module for 12-36V Lead Acid Lithium Battery Low Voltage Cutoff for Solar Panel Lighting System Camper - Image 1](https://m.media-amazon.com/images/I/51+7dejm41L.jpg)
![is Digital Low Voltage Protector Dconnect Switch Cut Off 12V Over-Dcharge Protection Module for 12-36V Lead Acid Lithium Battery Low Voltage Cutoff for Solar Panel Lighting System Camper - Image 2](https://m.media-amazon.com/images/I/519eXyPOclL.jpg)
![is Digital Low Voltage Protector Dconnect Switch Cut Off 12V Over-Dcharge Protection Module for 12-36V Lead Acid Lithium Battery Low Voltage Cutoff for Solar Panel Lighting System Camper - Image 3](https://m.media-amazon.com/images/I/51DrCyAkfLL.jpg)
![is Digital Low Voltage Protector Dconnect Switch Cut Off 12V Over-Dcharge Protection Module for 12-36V Lead Acid Lithium Battery Low Voltage Cutoff for Solar Panel Lighting System Camper - Image 4](https://m.media-amazon.com/images/I/51fWJVNfIdL.jpg)
![is Digital Low Voltage Protector Dconnect Switch Cut Off 12V Over-Dcharge Protection Module for 12-36V Lead Acid Lithium Battery Low Voltage Cutoff for Solar Panel Lighting System Camper - Image 5](https://m.media-amazon.com/images/I/51nX0oCd2QL.jpg)

## Questions & Answers

**Q: What is idle current draw when low voltage disconnect trips?**
A: Less than 1.5 watts per advertised specs which would be about 0.1 A (100 ma).

**Q: Can this be used with AC power at inverter output? I am thinking of wiring this into a small extension cord to have a "protected" circuit.**
A: Yes..BUT.. you need a 12 volt DPDT relay between your inverter and the load . Your DC 12 volts going into the inverter will also go into this Voltage Protector and the output from this Voltage Protector will power your  DC 12 relay.  When the 12 volts DC voltage going into the inverter drops to the set low voltage it will disable the relay which in turns cuts off the ac power between your inverter and your load.

**Q: What is the maximum amperage for this item?**
A: The maximum amperage before the breaker trips is 20A

**Q: With this work with dewalt 20v batteries?**
A: For posterity and because this question is popular: program at 15 Volts
5-cells * 3 Volts = 15 Volts
At the absolute lowest, down to 2.5V per cell. But I don't recommend that for safety or longevity.
I don't see anything in the description advising against Li-Ion batteries. Nor can I think of any reason this would not work for Li-Ion batteries, provided you program the shutoff correctly.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by J***B on 24 February 2021*

I hooked up this handy little gadget to the battery backup system we use to power my camper when we don't have grid power. The little relay on this circuit board can't handle the current that my inverter draws; so i simply connected this cut-off device to a hefty 250A relay which switches my inverter on or off. Now, when my battery drains below a pre-determined voltage, this little device turns off my big relay which, in turn, cuts off power to my inverter. (So, i no longer have to worry about draining my battery below a certain depth of discharge.) The other nice feature about this thing is the "differential" setting. I've now set the device to shut off at 11.4v and not kick back on until the battery reaches 12.6v. ONE LITTLE NUANCE: According to my multimeter, this thing reads about 0.2 or 0.25 volts less than the actual measured voltage of the battery. So i had to accommodate for this error factor when i set it up. I want it to cut off at 11.4 volts, so i set the cut-off voltage to 11.2. I want it to kick back on after the battery has reached 12.6 volts; but, because this thing is apparently off by 0.2, i therefore want it to kick back on at 12.4. The "difference" between 12.4 and 11.2 is 1.2. So that’s where I set the “differential” setting.

### ⭐⭐⭐⭐⭐ Review
*by F***N on 29 March 2020*

This device is intended to prevent over-discharge of the battery (or batteries) in a system like a solar panel-charged battery bank. Rechargeable batteries of any type can be damaged by being overly discharged in use. There are such things as "deep cycle" batteries, which are more resistant to these problems, but they still have a minimum voltage to which they can repeatedly be discharged without causing permanent damage. This module is a very simple, but very capable, device which basically allows the user to set a minimum voltage, and when the battery voltage drops below that value, it cuts off the output of the battery, shutting down the powered system. I set it up in a test circuit with a variable voltage power supply, to see how well it worked, before using it in my actual circuitry, and was able to verify that this module did exactly what it's intended to do. Then I set it up in a battery capacity testing system, to be used to verify the condition of an aircraft battery. I was interested in applying a moderately heavy load to a fully-charged battery. I wanted to discharge the battery to a reasonable point, but then shut off the load so as not to damage the battery. I was interested in monitoring the capacity of the battery to power that load, while not hurting it. I set the module to allow the battery to discharge to 10 volts. The fully charged battery had an open-circuit voltage of 12.6 volts. I then applied a 100W resistive load (just under 8 amps at the beginning). I monitored the time it took to drop from 12.6 to 10 volts, and then looked at the time it took to do that, using another electrical timer. This allowed me to leave the testing setup alone, without worrying that I would over-discharge the battery. It worked exactly as it was supposed to. As the voltage fell about .1 volts below 10 volts, the relay on the unit opened, and shut off the load. The other setting, the "difference value" keeps the circuit from cycling quickly after the load is removed. As the battery hits 10 volts, it shuts off. That immediately allows the voltage on the battery to increase, due to the loss of the load. If it did not have this "difference setting", that alone might allow it to reset and turn the circuit back on again. This would cause it to cycle off-on-off-on for a while, until the battery didn't recover to above the 10 volt setting. This behaved exactly as I needed for my intended use. If one was using this as it's intended for, in a solar system, for example, without the "difference setting", as soon as the battery output was shut off, when solar charging started again, it would immediately turn on the load again, and the battery wouldn't charge. One would use this device to ensure that the battery (or bank of batteries) is charged above the desired voltage before the load was again enabled. For example, as the system was used to power, say a small lighting system, or a waterfall pump, when the battery falls to below the set minimum safe level you choose, say 9 volts for a deep-cycle battery, it would disconnect the load. You could set the "difference value" to 4 volts. The next day, when the sun came out, the battery would charge, without powering the load, until it reached a level of 13 volts. The load would then be enabled, and if needed power would flow again to the load. Then, when the sun goes down, it would continue to power the load, until the battery reached 9 volts again, when the load would again be disconnected, and the cycle would repeat. This device seems to be very stable. It has a voltage display (red LED digits) to show the battery voltage. I found this to be very accurate, at least within .1 volt DC. And the battery/load cutoff is also very accurate, again within no more than .1 volt DC. The same display is used with the two switches to select and set the minimum voltage and the "difference value". You select "min voltage" by holding the left switch until the display flashes, and then use the two switches to set the value, up or down. When you leave it alone for a few seconds, it reverts back to the normal monitoring mode, and indicates the battery voltage again. You do the same thing with the right switch, to set the "difference value". It's pretty easy to set up once you figure this little finger dance out. It's not that tough, and you will likely only need to do it once. There is a small red LED that lights whenever the relay is energized (ON) and the load enabled. When it trips and turns off the relay/load, the LED is off. So you can tell at a glance what the status of the load is, and at the same time, what the battery voltage is at any given moment. Basically, the thing just works. The setting is persistent, in that it stays after power is disconnected until you manually change it. If you have a need for such a module, you can't beat this to control a moderate load. The relay is marked as being rated for a 20A load. It can handle a battery voltage up to 36 volts.

### ⭐⭐⭐⭐⭐ Review
*by T***N on 4 June 2022*

I purchased this disconnect to help prevent the battery in my kids’ toy car from being discharged too much from either use, or from the little toy radio not being turned off. The item itself is self explanatory in its installation, but instructions are provided nonetheless. The instructions warn that the device itself consumes power and will over time discharge the battery it is connected to. This should be expected, and doesn’t present a problem as it’s designed to prevent over-discharge - in my two weeks of testing this module, I have found it to work flawlessly. As mentioned, it’s easy to install - I used a 3D printer to make a little mount, but a few standoffs would work equally well. After setting the device up by patching it into the circuit and setting the threshold, it’s ready to go. The LED display is crisp and easy to read and shows currently voltage passing through the device. It has worked great for the post two weeks in my application. When the device shuts off the toy car, I disconnect the battery and recharge it so it’ll be ready to go the next day. I was pleasantly surprised by how straightforward the device is. The price is very reasonable and I’m considering buying more for other projects in the future.

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*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-02-17*