Best RV battery monitors

Best RV Battery Monitor : Top 5 Selection in 2024

Last Updated on December 10, 2022

RV batteries are notorious for failing without any warning, and if you’re not prepared, it can leave you stranded on the side of the road. These batteries are often missing performance due to overcharge or from being over-discharged. So how do you monitor your camper batteries to protect yourself from being stranded?

The best RV battery monitor can give you an early warning about these problems so that you can take corrective action before it’s too late. The device is not only compact but also very user-friendly. With this kind of monitor, you can easily keep track of the voltage and current status of your RV batteries.

Now, let’s look at the top five monitors for RV batteries and some vital factors you should keep in mind before making a purchase.

DROK Wireless Battery Monitor for RV

Working Voltage: 10V-100V
Alarm: Yes
App Control: N/A
Dimensions LxWxH: 2.42 x 1.31 x 0.53 inches

LNEX Portable RV Battery Monitor

Working Voltage: 8V-120V
Alarm: Yes
App Control: N/A
Dimensions LxWxH: 9.65 x 6.1 x 2.36 inches

FIXITOK Lithium Battery Display Monitor

Working Voltage: 9V-100V
Alarm: Yes
App Control: N/A
Dimensions LxWxH: ‎6.14 x 5.39 x 1.06 inches

Review of the Top 5 Best RV Battery Monitors

If you love spending time on the open road, then it’s essential to have a reliable RV battery monitor. After all, your RV is your home away from home, and you need to be able to trust that your battery will keep everything running smoothly.

That’s why we’ve put together a list of the top five RV battery monitor panels on the market. We’ll give you an overview of each one’s features, pros, and cons and explain why we think it’s worth your investment.

1. DROK Wireless Battery Monitor for RV

RVers are always looking for ways to make their rig more efficient. One good way to do this is by monitoring your battery usage. The DROK battery monitor is a great tool for RVers who want to keep an eye on their battery usage.

Aspects that Matter:

  • Clear LCD color screen for display
  • Input reverse connection protection
  • Low voltage alarm with red indicator flashing and buzzer alarms
  • Protective shell for dust-proof and waterproof 
  • It can be used with any 12-volt system
  • Ideal for RVs, boats, and other vehicles
  • It can be applied to a variety of instruments and meters
  • Built-in thermistor for temperature monitoring

Variety of Use:

The DROK wireless battery monitor for RV is a versatile and handy device that can be used to monitor a variety of battery types. Because it works with any 12-volt system, it is the perfect accessory for RVs, boats, and other vehicles.

It also works on a variety of devices and meters, including portable devices, power banks, medical devices, robots, golf carts, electric motorcycles, and self-balancing cars.

Easy to Use:

DROK 2001710003 has easy-to-follow programming instructions that make it simple to set up, and its programmable settings allow you to tailor it to meet your specific needs. You have the option of using lead/acid or lithium batteries. You can monitor the voltage with this tester as it attaches to the male cigarette lighter plug.

Energy Efficient:

DROK’s wireless RV battery monitor is a convenient way to keep a check on your RV’s power levels. The unit has a built-in thermistor that allows you to monitor the temperature, and it can be turned off when not in use to prevent draining the battery. It is also small and lightweight, making it easy to transport.

Warning Technology:

An LCD display makes it easy to read, and it also comes with an alarm that alerts you if the battery level drops below a certain level. With this monitor, you will always know how much charge is left in your batteries, so you will never run out of power while traveling.

Poor Aspects:

  • Installation instructions can be complicated and require minimal technical expertise.
    • There are online tutorials that will help you learn how to use the product.
  • You may lose programming if you are not careful to keep it powered.
    • You should be aware of fully discharging.


Now that we’ve taken a look at the DROK battery monitor, it’s clear that this device is capable of monitoring a wide range of batteries. It’s easy to set up and use, and you can customize it for your specific needs.

2. LNEX Portable RV Battery Monitor

You can keep track of your RV battery life with the LNEX RV battery monitor. It is a small, portable device that monitors the voltage and current in your RV battery. The LCD display also shows the remaining battery capacity in hours.

Aspects that Matter:

  • High low battery capacity alarm for over-discharge protection
  • Percent-of-charge meter programmable
  • Shows timing remaining on current dissipation
  • Large LCD color screen for easy reading
  • 26ft shielded cable for distance monitoring
  • Works with all types of batteries (Lead-acid, gel, and AGM)
  • 1% accuracy with built-in voltage and current sensor

Reliable and Safe:

Any RVer knows that a reliable battery monitor is essential for a successful trip. The LNEX portable RV battery monitor is one of the most reliable on the market, and its solar panel compatibility makes it ideal for dry camping.

This monitor is Accurate readings and has a 1% tolerance, meaning you can always trust its readings. Aside from this, its solar panel compatibility means you don’t have to worry about your batteries running low while dry camping.

Easy Setup:

Those who are looking for a monitor that is easy to install and configure will find this a good option. It comes with a shielded 26-foot long lead cable that allows for a simple setup, and the high and low trip voltages are easily adjustable. A built-in battery tester makes checking the status of your batteries convenient.

Excellent Battery Tracking:

Any RV owner who’s trying to keep track of their batteries can benefit from the LNEX battery monitor. It booted up quickly and operated as stated. The monitor tracks battery capacity changes for partial recharge, which is helpful in keeping the batteries from running out of power.

Protect Overcharge:

These battery monitors help to prevent overcharging by giving an alarm when the battery is full. This helps to extend the life of the battery by preventing deterioration from overuse. As well, battery monitors are simple to mount.

Simply line them from the battery terminal to the ground in your camper. The monitor can also include features like an alarm, amp meter, and battery life mah monitor.

Poor Aspects:

  • This product has a lot of features and may be hard to configure.
    • If you have excellent product knowledge, it can be easily implemented.
  • The monitor does not come with mounting hardware (screws, zip ties, etc.).
    • These items can be purchased separately.


As you can see the LNEX battery monitors are valuable devices for any RV owner and are sure to give you peace of mind on your next trip. If you’re looking for a battery monitor that’s accurate, reliable, easy to use, and convenient, the LNEX is the right option.

3. FIXITOK Lithium Battery Display Monitor

The FIXITOK battery monitor is a valuable tool for those who own an RV. It helps to monitor the battery life of your RV and ensure that you have enough power to last through your trip. It’s also nice looking and very affordable.

Aspects that Matter:

  • Green backlight & sleeping mode
  • Compact and small, with a covered rear
  • Fits golf carts, boats, cars, RVs, motorcycles, etc.
  • Can be used with multiple types of batteries
  • Shows battery voltage and current draw in real-time
  • Estimates how far you can travel before needing to recharge
  • Alarm sounds when battery capacity is lower than 20%

Compact and Intuitive:

This FIXITOK display monitor for lithium batteries is a compact unit that fits easily into any space, and it’s user-friendly. Simply push the button in the front to check the status of your batteries.

If you need to make adjustments, there is a setting button in the back. So you can make sure that your batteries are always charged and working properly.

Green LCD Display:

RVers who want to know how much power they use will benefit from a power monitor. The green LCD display continuously displays battery voltage and current draw, so you can quickly see what kind of energy you’re using. You can view the display in low light since it has a backlight.

Caution Alarm Set:

If the battery capacity is less than 20%, an alarm will flash on the FIXITOK RV battery monitor display. It is accurate and easy to read, making it a great choice for any RV owner.

This product is also very inexpensive, making it a great value for its price. The device can also estimate how far you can travel before it needs to be recharged.

Versatile Uses:

This monitor is an excellent way to keep track of your deep-cycle batteries. It can also work with multiple battery types for golf carts, boats, cars, motorcycles, etc. The display will show you the voltage of any 12-volt to 84-volt lead-acid, gel, or lithium-ion battery.

Poor Aspects:

  • The programming instructions can be a little confusing.
    • With a little patience and practice, you will be able to program the monitor without any problems.
  • The charge indicator light is all over the place.
    • This is not a problem, as the charge indicator is only meant to give you a general idea of the charge level.


With the FIXITOK RV battery monitor, you can quickly and easily keep an eye on your automobile batteries, ensuring that they are always in tip-top shape. If you want to be more energy-efficient while on the road, get this reliable monitor.

4. DFmicro 48V Lead Acid Battery Monitor

RVs lead-acid batteries are one of the most popular types of batteries on the market and for good reason. One important aspect of lead-acid battery care is monitoring the battery’s voltage level. That’s where the DFmicro 48v lead acid battery monitor comes in.

Aspects that Matter:

  • Battery model and string number settings
  • Green backlit LCD screen with a large display area
  • Battery symbol and percentage or voltmeter display modes
  • PVC film for durability and portability
  • Reports on lead, lithium, and lithium ferrous oxide batteries
  • Can be used to monitor deep-cycle batteries
  • Compact design with the universal power button

Easy Installation Hardware:

The DFmicro 48v battery monitor for RV is an essential tool for any RVer. It is very easy to mount with the included hardware, and its compact design makes it effortless to take with you on the go. It accurately gauges your battery’s charge percentage, so you can always be sure to have enough power when on the road.

High-detail Mini Display:

The backlit display makes it convenient to see, even in low light conditions. The LCD display shows the voltage, current, and of your recreational vehicle batteries in real-time, so you can always see the remaining power.

The battery monitor also displays information about lead, lithium, and lithium ferrous oxide batteries, so you can keep an eye on all your RV battery types.

Quick Wire Connections:

The unit is connected through simple wire connections, and it is covered with a protective PVC film to make it more weather-resistant. This battery monitor is also widely useful for monitoring other deep-cycle batteries in a variety of applications.

Universal Power Switch:

DFmicro RV battery monitor is a great way to keep your trailer batteries healthy and prevent overcharging or draining. With a universal power button, it can be used to set the battery model and string the numbers of batteries.

The monitor will then provide you with information on the health of your batteries like a Victron battery monitor so you can take action to prevent any issues.

Poor Aspects:

  • Setup may be difficult because the instructions are not very clear.
    • You can try watching a video tutorial on how to set up the DFmicro battery monitor for RV.
  • The screen goes blank in high-humidity areas, making it difficult to get an accurate reading.
    • You can buy a dehumidifier for your RV to keep the air dry and prevent the screen from going blank. Or mount the monitor in a dry and well-ventilated area.


Whether you are keeping track of your camper batteries or your other vehicle batteries, the DFmicro 48v battery monitor can maximize your investment because it is so easy to install and use.

5. Seesii RV Battery Monitor with Bluetooth

The Seesii Bluetooth-enabled monitor helps you keep track of your battery life while on the road. Your RV’s battery is connected to the device, which displays real-time information on your phone or tablet.

Aspects that Matter:

  • Excellent Display but a bit crowded.
  • Difficulty connecting via Bluetooth.
  • 2.4 inches TFT high definition colorful screen
  • Calculation of charge and discharge battery capacity
  • Automatically identify charging and discharging currents
  • Support Bluetooth and APP control
  • Pure brass and heavy-duty connectors/nuts/bolts
  • Compatible with various types of batteries
  • 400 amp shunt for safety


This device can easily be installed and can work perfectly with the Bluetooth APP via a smartphone. It has straightforward installation instructions that make it a breeze to install. The battery monitor helps you keep a check on the battery level, so you don’t run out of juice on the road.


Seesii’s easily adjustable parameters allow you to accurately track charge/discharge readings, meaning you’ll never have to worry about your RV’s power levels again. Whether you’re on the road or at home, Seesii’s RV battery monitor is the perfect way to keep tabs on your power consumption.

Curve Display:

The Seesii RV battery monitor with Bluetooth is powered by 50+ volts, so there is no need to worry about compatibility. Apart from that, the monitor supports curve display, data viewing, data storage, and firmware upgrades. Its 400 amp shunt ensures that your battery will never be overcharged or fried.

Multiple Uses:

This handy tool can be used with any size battery pack and monitors all sorts of battery functions, including voltage, current, and temperature. Plus, the Seesii RV battery monitor comes with various safety features, such as over-voltage, over-discharge, and short-circuit protection.

Colorful Display:

The device has a 2.4-inch bright and colorful display that is easy to read, and it offers good accuracy with readings that are mostly accurate. Although the monitor can be used without the app, using it with the app is much easier since it provides more information.

Poor Aspects:

  • Some users find the display crowded and difficult to read.
    • While many features show the display, the little crowd doesn’t matter.
  • The Bluetooth connection can be somewhat finicky and may require some troubleshooting to connect.
    • With good quality devices, you can try the Bluetooth connection.


If you are looking for an RV battery monitor that you can rely on, the Seesii battery monitor is a good option. It is simple to install and operate, and it offers many features that make it a valuable addition to your RV.

These all are the best RV battery monitors available in the market, so you can choose any one of them for your motorhome. All of these have their own pros and cons, so read the reviews carefully before making a decision.

Comparison Chart on Best RV Battery Monitor:

ProductWorking VoltageAlarmApp ControlDimensions LxWxH
DROK 200171000310V-100VYesN/A2.42 x 1.31 x 0.53 inches
LNEX 10-15mA Monitor8V-120VYesN/A9.65 x 6.1 x 2.36 inches
FIXITOK LCD Monitor9V-100VYesN/A‎6.14 x 5.39 x 1.06 inches
DFmicro DC Monitor12V-48VN/AN/A2 x 1.1 x 0.45 inches
Seesii KG140F0V-120VN/AYes9.84 x 7.09 x 2.17 inches

How to Choose the Right Battery Monitor for an RV Camper?

RV battery monitor system

You know how important it is to keep an eye on your battery levels if you have an RV or a camper. Because if the battery dies, then you are stuck in the middle of nowhere without power. That’s why it’s essential to choose the best RV battery monitor for your RV or camper.

With so many different models on the market, it can be tough to know where to start. Here are a few things to keep in mind as you shop for the perfect battery monitor for your needs.

Large Font LCD Screen

It is essential to pick a display that is designed to work with the specific type of RV camper battery that you have. You should keep the following points in mind when choosing an LCD battery monitor.

  • First, the size of the display will need to be large enough to be easily seen from a distance.
  • Second, the font should be easy to read, even in low light conditions.
  • Third, the display should be able to provide information on both the current battery level and the amount of time that the battery has been in use.

Battery Shunt

The input and output current of the batteries is measured by the battery shunt. If the shunt is malfunctioning, it can cause the batteries to overcharge or discharge, which can seriously harm them.

To check the battery shunt in a battery monitor, simply connect a voltmeter to the positive and negative terminals of the shunt. The voltmeter should read around 0.5 volts when there is no current flowing through the shunt.

If the voltmeter reads significantly higher or lower than this reading, this could be an indication that the shunt isn’t working and should be replaced.

Wireless Connectivity

Do you want a Bluetooth connection, or do you prefer WiFi? The following points can help you make your decision.

First, consider what devices you’ll be using to access your RV battery monitor. If you only need to use your smartphone or tablet, then Bluetooth may be the simplest and most convenient option.

You may prefer to use WiFi/App if you want to monitor your RV’s battery level from your computer or if you have multiple devices that you want to connect.

Next, think about range. Bluetooth has a limited range, so if you have a large RV or if you often take your RV camping in remote areas, WiFi may be a better option. With the app, you’ll be able to view your RV battery status from anywhere that has an Internet connection.

Surface or Flush mount

Battery power system voltage

The main difference between them is in the installation: surface mounts are installed on the outside of your RV, while flush mounts are installed on the inside. Both have their pros and cons, so it’s important to consider your needs before making a decision.

If you’re looking for a more permanent solution, then a surface mount is likely the way to go. For those who are concerned about aesthetics or do not want to drill any holes in their RV, a flush mount may be a better choice.

Alarm and Notifications

A good RV battery monitor can give you peace of mind by keeping track of the batteries and sending you alerts if they start to get low. What you should consider:

First, think about how you want to be alerted when your battery levels start to get low. Some monitors will send an instant notification to your phone through the app, while others will simply display a warning light on the unit itself.

If you want to be able to keep an eye on your batteries even when you’re not near your RV, then an instant notification is probably the way to go.

Accuracy of Readings

Among other things, RV battery monitors show you how full your batteries are charged. They do this by reading the voltage of the battery and then translating that into a % full reading.

Basic monitors only read voltage and translate it into a % full reading. This is the most inexpensive type of monitor, but it is also the least accurate. The margin for error is about ± 20%. This means that if your monitor says your batteries are 80% full, they could actually be anywhere between 60-100% full. 

Many of these monitors also have a feature that estimates how much time you have left until your batteries are fully depleted (this is based on past Amp-Hour usage). The accuracy of Intermediate RV battery monitors is much better than basic models, with a margin for error of only ± 5%.

Compatibility & Convenience

An important consideration is whether the model will work on your RV’s electrical system. The majority of battery monitors will work with both 12-volt and 24-volt systems, but it is important to check before making your purchase.

You should also consider the convenience of the unit. Some models come with built-in displays that show voltage, current, and battery life at a glance, while others require an external display or smartphone app.

Safety Features

RV Battery monitoring systems

There are a few things to consider when selecting the safety features for your RV battery monitor:

First, you’ll want to make sure that the monitor has an over-voltage protection feature. This will protect the battery from being damaged by overcharging.

Next, you’ll want to look for a monitor that has an over-discharge protection feature. In that case, your RV battery won’t be compromised by too deep a discharge.

Finally, the monitor should have a short circuit protection feature. That way, the RV battery won’t be harmed by short circuits.

Additional Features

Some monitors include things like solar charging, temperature monitoring, and more. If you think you might want to add solar panels to your RV in the future, then it might be worth getting a monitor that already has that feature.

One feature that is worth considering is the ability to monitor multiple batteries. But if you hook up multiple batteries to the same monitor, you will only be able to see voltage, and not amps or anything else. You can use it both when keeping an eye on the RV engine battery and the inside house battery.

Simple to Install With Included Accessories

Some battery monitors can be quite complicated to install, and if you are not experienced in this area, it can be a real challenge. That’s why it is important to choose an easy-to-install RV battery monitoring system.

Look for a unit that comes with clear and concise instructions, and make sure that it is compatible with your RV’s electrical system. And also, if you can, find a model that comes with all the necessary cables and mounting hardware.

Now that you know what to look for in an RV battery monitor. You have enough information to make an informed decision about your options. Do your research on the best RV battery monitors we listed, and find the one that best meets your needs.

How to Read RV Battery Monitor Panel?

Best battery monitor

RV battery bank monitor panels give you all the information you need to know about the status of your motorhome batteries at a glance. By reading the battery monitor display, you can easily see if your batteries are fully charged, if they need to be recharged, or if they are close to being depleted. Here are the steps to follow: 

1) Take a Look at the Voltmeter

The voltmeter should be connected to the negative terminal on the battery and then touch the positive terminal of the meter to various points in the circuit. If your battery is 12V, you should see a reading of between 12 volts and 14 volts on the voltmeter.

If the reading is much higher or lower than this, it indicates that there is a problem with that particular component of the circuit. By taking voltage readings at different points in the circuit, you can quickly identify where the problem lies and take steps to fix it.

2) Check the Amp-hour Meter

The amp-hour meter measures the amount of electrical current flowing through your trailer batteries. This information can be used to determine how much power they are storing and how quickly they are being discharged.

To check the amp-hour meter, simply look at the readout on your RV battery monitor panel. The readout will likely be in amps, but you can also convert it to watt-hours by multiplying it by the voltage of your auxiliary battery.

Using this data will help you determine how long your camper batteries will last before they need to be recharged.

3) Look at the Charge Indicator Light

The charge indicator light is one of the most important readouts on the panel, and it can give you a good indication of how your battery is performing.

When the light is green, it means that the battery is fully charged. If the light is yellow, then the battery is partly charged. And if the light is red, it signals that the batteries are running low and need to be recharged.

4) See the Temperature Gauge

If the batteries are getting too hot, it can reduce their lifespan and performance. To check the temperature gauge, look at the display on your RV battery monitoring system. The ideal temperature for vehicle batteries is between 77 degrees Fahrenheit and 87 degrees Fahrenheit.

If the temperature is outside of this range, it could be an indication it is time to replace the battery or the charging system.

5) Overall Condition of the Battery

After you have checked all the readouts on the RV battery monitor panel, you should have a good idea of the overall condition of your battery. If everything looks normal, then your battery bank is likely in good condition.

You should look for any abnormalities that could indicate a problem with your battery. In this case, it is important to take steps to fix the problem as soon as possible.

How does the 12V Battery Monitoring System Work on RVs?

RV power monitor

This system is designed to help you get the most out of your RV battery. By monitoring the voltage, current, and temperature of your battery, the system can prevent overcharging and provide you with information about the health of your battery.

The system consists of a display unit and a control unit, which are connected to the battery via cables. Besides the current voltage and temperature of the battery, the display unit also shows the current charge level.

When the battery voltage inputs rise too high, the control unit disconnects the power automatically to prevent overcharging. The system also includes a temperature sensor, which helps to prevent overheating by shutting off the power if the battery gets too hot.

How to Install a Lithium and Lead Acid Battery Monitoring System in RV?

Battery monitoring devices

Before you begin the installation process, you need to gather all of the necessary supplies. This includes the monitoring system, a drill, a screwdriver, and wire cutters.

Once you have everything you need, you can start by attaching the monitor to the battery using the screws provided. Next, you will need to drill a hole through the side of the RV so that you can run the wires from the monitor to the battery.

Be sure to seal up the hole once the wires are in place. Finally, connect the positive and negative wires to the battery bank terminals using the provided clamps.

Once everything is secure, power on the RV and test out the system to make sure it is working properly. By following these simple steps, you can easily install lithium or lead-acid battery monitors on your RV.

Frequently Asked Questions

RV battery monitoring system allows you to keep track of the performance of your recreational vehicle batteries. Here are some frequently asked questions that can help you learn more about this system.

1. How to Monitor RV Batteries on a Budget?

Just because you’re on a budget doesn’t mean you can’t take good care of your camper batteries. An RV battery monitor system can help you keep track of how much power you have left and how long it will last.

Most RV battery monitors will let you know if there is something wrong with your RV battery bank, so you can get it fixed before it becomes a bigger problem. Best of all, the battery monitor is very affordable, so you can get one without breaking the bank.

2. How do I Monitor My AGM Battery?

AGM batteries are maintenance-free, meaning that you don’t have to add water or other fluids to them. But it’s still important to monitor your AGM battery to make sure it’s performing properly. You can do this by purchasing a monitor.

This is a device that you can install on your battery bank that will show you its charging and discharging cycles. The battery monitoring system will also give you an estimate of how much power the unit has left, so you can know when it needs to be recharged.

3. How Do You Monitor a Trailer Battery?

With a digital battery monitor, it’s easy to do. All you have to do is hook the positive and negative leads from the battery to the monitor. Once it’s hooked up, the digital display shows the voltage of the battery bank in real time.

You can also see the amount of power being drawn from the battery and what is left in reserve. Just hook it up and keep an eye on the display to make sure your battery stays healthy.

4. Where Do You Put a Battery Monitor Shunt?

Battery monitors are devices that are installed in between the negative terminal of the battery and the negative terminal of the load. This device measures the current without affecting the circuit. The current is used in conjunction with the voltage to calculate battery SOC (state of charge).

5. How Do You Know If Your RV Needs a Battery Monitor?

A battery monitor may be necessary for your RV depending on a few factors. First, if you frequently find yourself having to recharge your battery, it may be time to invest in a monitor.

Second, if your battery regularly runs low on power, even when plugged into an external power source, a battery monitoring system will help you monitor its charge level and prevent it from running out of juice.

Finally, if you have difficulty starting your RV’s engine, or if the engine turns over slowly, your battery system is not being properly charged. In any of these cases, a battery monitor can be an essential part of your RV.

6. How RV Battery Monitors Are Made?

RV battery monitors are made beginning with the collection of raw materials. The most important component is a thin film of semiconductor material, which is typically made from silicon. This film is placed on a glass substrate, and then a series of electrical circuits are etched onto the surface.

The completed circuit board is then covered with a layer of insulating material, and the whole assembly is encased in a durable plastic casing. The finished product is then tested to ensure that it meets all safety and performance standards.


You can see that there are many benefits to using the best RV battery monitor. It is affordable, easy to install, and can enable you to monitor your RV battery’s condition level in real-time.

If you are experiencing problems with your RV battery bank or if you want to be proactive about keeping it healthy, a battery monitor would be a great investment. Don’t forget to choose one compatible with the electrical system of your RV.

You can use our listed RV battery monitors reviewed and other information outlined in this article to make an informed choice about your purchase. To ask any questions, contact us at any time. Happy travels.

DROK 12V Battery Monitor, Digital Battery Capacity Tester, Percentage Level Voltage Temperature Switch Meter Gauge 12V LCD Display Marine RV Battery Power Indicator Panel
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Last update on 2024-07-21 / Affiliate links / Images from Amazon Product Advertising API

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