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bayite DC 6.5-100V 0-100A LCD Display Digital Current Voltage Power Energy Meter Multimeter Ammeter Voltmeter with 100A Current Shunt

4.4 4.4 out of 5 stars 4,534 ratings

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Purchase options and add-ons

Brand bayite
Power Source Dc
Style Multi Testers
Color Blue
Item Weight 7.04 Ounces

About this item

  • Test range: Voltage: DC 6.5~100V; Current: 0~100A; Power: 0~10kW; Energy: 0~9999kWh
  • Store energy data when power off (can be reset to 0). The blue backlight can be turned on/off manually
  • With overload alarm function (If active power is larger than threshold, backlight and power value will flash)
  • 4 in 1 meter; Large-screen LCD (displays voltage, current, active power, energy at the same time)
  • Warranty:1-year free replacement or full refund without return

Additional Details

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bayite DC 6.5-100V 0-100A LCD Display Digital Current Voltage Power Energy Meter Multimeter Ammeter Voltmeter with 100A Current Shunt

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 3.33 x 1.75 x 0.96 inches; 7.04 ounces
  • Item model number ‏ : ‎ PZEM-051
  • Date First Available ‏ : ‎ August 10, 2015
  • Manufacturer ‏ : ‎ bayite
  • ASIN ‏ : ‎ B013PKYILS
  • Customer Reviews:
    4.4 4.4 out of 5 stars 4,534 ratings

Product Description

Main Specifications:

  • Recommended Cutout Dimensions: 3.33 inch (L) x 1.75 inch (W) x 0.96 inch (H)
  • Working voltage: DC 6.5 ~ 100V
  • Measuring Accuracy: 1%
  • Power Consumption: 0.2W
  • Measurement speed: 2 times/s
  • Store Energy data when power off. Can be reset to 0.
  • The blue backlight can be turned on/off manually

Test Range and Display format:

  1. Active Power test range: 0~10kW
  2. Energy test range: 0~9999kWh
  3. Voltage test range: DC 6.5~100V
  4. Current test range: 0~ 100A

Cautions

  1. This module is only suitable for 6.5~100V DC power.
  2. Applied load should not exceed the rated power.
  3. Wiring order can not be wrong.
  4. This module is suitable for indoor applications, please do not use outdoors.

Package includes:

  • 1x DC 6.5-100V 100A Power Multimeter
  • 1x 100A Current Shunt

NOTE: The wire harness is NOT included.

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
4,534 global ratings

Customers say

Customers like the performance, ease of installation, value, and quality of the battery meter. They mention that it works great, the wiring instructions are more than adequate, and is good value for the buck. Some like the readability, and information. That said, opinions are mixed on accuracy and display.

AI-generated from the text of customer reviews

767 customers mention648 positive119 negative

Customers like the performance of the battery charger. They mention that it works great, has good quality, and has no issues. Some say that it's handy and affordable, and that it has a great application. Overall, most are satisfied with the performance and quality of the product.

"...Great product, great longevity, and great information displayed for nerd like me who like to watch the numbers go up and down as conditions change." Read more

"I've been using this for 6 years now in my off-grid home. Works great, no complaints.The voltmeter seems to be very accurate...." Read more

"...shunt, easy circuit diagram for installation, the price and dependability...." Read more

"...Great application" Read more

301 customers mention248 positive53 negative

Customers find the installation process of the tools to be easy. They mention that the wiring instructions are more than adequate, and the product comes nicely packaged with good instructions. Some say that the coil version is easier to install than the shunt version. Overall, customers are satisfied with the ease of installation and recommend the product.

"...meter including it’s depth, the included shunt, easy circuit diagram for installation, the price and dependability...." Read more

"I'm on my third one after the last two bit the dust (read on). Easy to set up and fairly accurate but I think that is adjustable if you really need..." Read more

"...So far both meters have worked great and were relatively easy to install. I can't believe I waited so long to install something like this...." Read more

"ok at least this people sent me the right item. also came with instructions...." Read more

195 customers mention136 positive59 negative

Customers are mixed about the accuracy of the tool. Some mention that it seems to be pretty accurate, while others say that it flickers and gives approximate readings. The voltage measurement is spot on and within 1% compared to other professional tools. However, some say that the ammeter is a bit off and hard to measure a charge with voltage alone.

"...Easy to set up and fairly accurate but I think that is adjustable if you really need it to be...." Read more

"...Both meters show the identical voltage readings. With these meters I can keep easy tabs on what my electrical system is doing...." Read more

"...The voltmeter seems to be very accurate. The ammeter might be a little off, but it still lets you know what's going on...." Read more

"The voltage measurement is spot on and within 1% compared to other professional tools I'm using...." Read more

192 customers mention187 positive5 negative

Customers appreciate the value of the battery bank monitor. They say it's well worth the money spent, and a cost effective product. Some customers also mention that the product does not work out of the box.

"...depth, the included shunt, easy circuit diagram for installation, the price and dependability...." Read more

"...it just had a temporary on/off function, but like I said good enough for the price point...." Read more

"...It's so inexpensive yet so helpful. A no-brainer...." Read more

"...All told, they are good value for the price." Read more

159 customers mention135 positive24 negative

Customers like the quality of the meter. For example, they say it's a great product, great for monitoring and measuring the performance of a battery, and an outstanding multi-indicating meter that does its job well. Customers also mention that it'll be perfect for knowing your power input and output in an RV. Overall, customers are satisfied with the quality and functionality of the product.

"...This type of setup is great for monitoring and measuring the performance of your batteries and solar system and if you have enough solar available..." Read more

"...All in all it seems to be a very good meter in my experience and as indicated by the high star reviews posted here. Recommend." Read more

"Neat little ammeter. You can easily find out how many amps your DC items are actually drawing from your batteries or power supply...." Read more

"A good basic battery monitor. It shows battery charge and power usage. I would have preferred it to come with a wiring harness...." Read more

150 customers mention109 positive41 negative

Customers find the readability of the product to be straightforward, easy to understand, and clear. They also appreciate the font used and numbers that are easy to read up close. However, some customers feel the instructions could be in American English.

"...instruction sheet included in my package was in color and easy to read...." Read more

"Easy to wire from instructions readability is great and it works. I can not review accuracy from lack of measuring tools...." Read more

"...Good enough for now. The screen is a bit hard to read if not head on...." Read more

"...Great meter, great price, instructions need American English and additional functional instruction. Great product always get quick Bay it response...." Read more

85 customers mention79 positive6 negative

Customers appreciate the information provided by the tool. They say it provides good insight into their RV batteries, and is very instructive. They also say the display is nice and accurate, and gives a clear indication as to when they need to hook up the generator. Customers also say it's easy to install with good examples in the documentation. Overall, they find the tool helpful and valuable.

"...Great product, great longevity, and great information displayed for nerd like me who like to watch the numbers go up and down as conditions change." Read more

"...EDIT 7/13/2018 - Meters are still working great and are very helpful. This should have been standard equipment...." Read more

"I like the information displayed, the clarity of the display and backlight that can be turned on/off...." Read more

"I very much like the features of this product. Because its display all the info I need in my motor home...." Read more

117 customers mention78 positive39 negative

Customers are mixed about the display of the tools. Some mention that it's bright, large enough to read from several feet away, and makes a great night light. The backlighting is not overly harsh, so they may just leave it on all the time. However, others say that it gave up and can't be seen when looking at it.

"...These meters are good displays especially for solar controllers that don’t have displays or don’t show enough information...." Read more

"...I like the display readout, the size of the overall meter including it’s depth, the included shunt, easy circuit diagram for installation, the price..." Read more

"...Finally the display gave up. Bought a replacement, dropped it right back in to the old socket and it fired right up...." Read more

"...It makes a great night light. So far both meters have worked great and were relatively easy to install...." Read more

Excellent for monitoring RV solar setups
5 Stars
Excellent for monitoring RV solar setups
I have been using these bayite meters for almost three years now, not only in my travel trailer, but in my shed solar setup. The CHARGE and DISCHARGE meters in my photos are my original meters purchased in April 2019 and the SOLAR and INVERTER meters are the newer models ordered in April 2022. The only differences I can discern is the button on the front. The older meters had a recessed button and you needed a pen or pin to press it, whereas the newer model has a low profile button but can easily be pressed with just a finger, no device needed.The picture attached is before I upgraded the system: 10A controller with 200W solar array (upgrading to a 30A and 300W next) and these pictures were taken under partial tree shade in the late afternoon sun. The TT is running a 2000W modified sine wave inverter off a 385AH flooded lead acid battery bank, which powers mostly a residential mini fridge in the TT outside kitchen, wired through a 120V manual transfer switch to the GFCI outlets. You can see that the INVERTER load from the fridge is about 6A, while the solar output is about 4A, which correlates to the almost 2A battery discharge (including other low current devices: RV fridge circuit board, USB outlets, display lights).This type of setup is great for monitoring and measuring the performance of your batteries and solar system and if you have enough solar available or if your inverter loads are too much. To see what your actual amp-hour draw is, divide the ENERGY output by 12 (or whatever voltage you are running) to get AH so you can size your battery bank appropriately. My setup needs about 186 AH max per day and I am adequate on capacity but really should add an additional 100AH (of course I should add an additional 100W of solar too, but really there isn’t a hard ceiling to the max specs, just mind your budget). I boondock occasionally, but consider myself more of a touring adventurer, meaning I drive long distances in between destinations and camp mainly overnight in the forest or dispersed. My tow vehicle provides charging power along with the solar panels to recharge my batteries and my last 24 hours yielded 166 AH used so I never get below 50% of my battery bank. The extra 100W will help with the charge too once complete.I 3D printed a couple of meter mounts in black ABS and mounted them outside of the RV’s control panel. I could have also flush mounted them for a lower profile look but I think they look pretty good the way they are now. I used some spare Cat 6 and some jacketed landscape wiring to run from the RV batteries to the control panel. I would recommend finding some type of stranded small gauge wire for ease of crimping onto ring terminals and heat shrink tubing to protect them from separating while attached. Using ring terminals is the most secure to attach to the shunts but you can use spades or bare wire too. A good option for mounting is directly attaching the shunt to the negative battery terminal or inverter post, just remember to attach ALL load negatives on the other side of the shunt to accurately capture all discharging loads on the meter. The diagram provided by bayite on this site in the manufacturer pictures show to connect the solar meter/shunt AFTER the controller, which is a correct installation if you want to know how much power the solar controller is sending to your batteries. Bayite also provides a link to a modified diagram where the solar meter/shunt (included in my review pictures) is connected BEFORE the solar controller, directly in line from the solar panels, which will provide the meter with information with how much power your solar panels are actually producing. Each wiring is correct but provides different information; the voltages will differ as connecting before the controller will show the solar panel voltage whereas connecting after will show the battery voltage.Your shunt may have cuts in them, which is completely normal as it’s how they’re calibrated. Other reviews here say they have cuts and that they are damaged, but that’s inaccurate. These meters are good displays especially for solar controllers that don’t have displays or don’t show enough information. Great product, great longevity, and great information displayed for nerd like me who like to watch the numbers go up and down as conditions change.
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Top reviews from the United States

Reviewed in the United States on April 9, 2022
Customer image
5.0 out of 5 stars Excellent for monitoring RV solar setups
Reviewed in the United States on April 9, 2022
I have been using these bayite meters for almost three years now, not only in my travel trailer, but in my shed solar setup. The CHARGE and DISCHARGE meters in my photos are my original meters purchased in April 2019 and the SOLAR and INVERTER meters are the newer models ordered in April 2022. The only differences I can discern is the button on the front. The older meters had a recessed button and you needed a pen or pin to press it, whereas the newer model has a low profile button but can easily be pressed with just a finger, no device needed.

The picture attached is before I upgraded the system: 10A controller with 200W solar array (upgrading to a 30A and 300W next) and these pictures were taken under partial tree shade in the late afternoon sun. The TT is running a 2000W modified sine wave inverter off a 385AH flooded lead acid battery bank, which powers mostly a residential mini fridge in the TT outside kitchen, wired through a 120V manual transfer switch to the GFCI outlets. You can see that the INVERTER load from the fridge is about 6A, while the solar output is about 4A, which correlates to the almost 2A battery discharge (including other low current devices: RV fridge circuit board, USB outlets, display lights).

This type of setup is great for monitoring and measuring the performance of your batteries and solar system and if you have enough solar available or if your inverter loads are too much. To see what your actual amp-hour draw is, divide the ENERGY output by 12 (or whatever voltage you are running) to get AH so you can size your battery bank appropriately. My setup needs about 186 AH max per day and I am adequate on capacity but really should add an additional 100AH (of course I should add an additional 100W of solar too, but really there isn’t a hard ceiling to the max specs, just mind your budget). I boondock occasionally, but consider myself more of a touring adventurer, meaning I drive long distances in between destinations and camp mainly overnight in the forest or dispersed. My tow vehicle provides charging power along with the solar panels to recharge my batteries and my last 24 hours yielded 166 AH used so I never get below 50% of my battery bank. The extra 100W will help with the charge too once complete.

I 3D printed a couple of meter mounts in black ABS and mounted them outside of the RV’s control panel. I could have also flush mounted them for a lower profile look but I think they look pretty good the way they are now. I used some spare Cat 6 and some jacketed landscape wiring to run from the RV batteries to the control panel. I would recommend finding some type of stranded small gauge wire for ease of crimping onto ring terminals and heat shrink tubing to protect them from separating while attached. Using ring terminals is the most secure to attach to the shunts but you can use spades or bare wire too. A good option for mounting is directly attaching the shunt to the negative battery terminal or inverter post, just remember to attach ALL load negatives on the other side of the shunt to accurately capture all discharging loads on the meter. The diagram provided by bayite on this site in the manufacturer pictures show to connect the solar meter/shunt AFTER the controller, which is a correct installation if you want to know how much power the solar controller is sending to your batteries. Bayite also provides a link to a modified diagram where the solar meter/shunt (included in my review pictures) is connected BEFORE the solar controller, directly in line from the solar panels, which will provide the meter with information with how much power your solar panels are actually producing. Each wiring is correct but provides different information; the voltages will differ as connecting before the controller will show the solar panel voltage whereas connecting after will show the battery voltage.

Your shunt may have cuts in them, which is completely normal as it’s how they’re calibrated. Other reviews here say they have cuts and that they are damaged, but that’s inaccurate. These meters are good displays especially for solar controllers that don’t have displays or don’t show enough information. Great product, great longevity, and great information displayed for nerd like me who like to watch the numbers go up and down as conditions change.
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43 people found this helpful
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Reviewed in the United States on February 5, 2024
One person found this helpful
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Reviewed in the United States on March 30, 2018
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4.0 out of 5 stars Handy Meter for Reading My Solar System Battery Bank Status
Reviewed in the United States on March 30, 2018
I’ve been using this little meter for several weeks to monitor the status of my solar system batteries and it’s doing a great job. I like the display readout, the size of the overall meter including it’s depth, the included shunt, easy circuit diagram for installation, the price and dependability. The one thing I don’t care for so much is the thin bezel margin that covers the hole where it’s installed, would prefer more overlap. Also, no positive mounting option is included. I improvised using an electrical outlet blank that I trimmed roughly to the size needed with a dremel type tool, and then glued the meter to the plastic face plate with Gorilla Glue. Well, the glue doesn’t work well with plastic, so I have to be gentle handling the meter and face plate. One easy addition the manufacturer could provide would be a template for etching the cutout where it’s to be mounted.

All in all it seems to be a very good meter in my experience and as indicated by the high star reviews posted here. Recommend.
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3 people found this helpful
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Reviewed in the United States on February 22, 2024
Reviewed in the United States on January 1, 2024
Reviewed in the United States on February 24, 2024
Reviewed in the United States on May 4, 2023
One person found this helpful
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Top reviews from other countries

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Hugo De La Rosa
5.0 out of 5 stars Excelente
Reviewed in Mexico on June 30, 2023
J Reuter
5.0 out of 5 stars Identity parasitic current draw
Reviewed in Canada on May 23, 2023
vic
5.0 out of 5 stars Very accurate and easy to wire
Reviewed in the United Kingdom on June 8, 2017
Matthias EcoAmbitionsAustralia
5.0 out of 5 stars Excellent value for money, highly recommended
Reviewed in Australia on November 10, 2020
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Matthias EcoAmbitionsAustralia
5.0 out of 5 stars Excellent value for money, highly recommended
Reviewed in Australia on November 10, 2020
I am using 4 of these meters to monitor my solar battery system:
- Battery in
- Battery out
- Inverter out and
- Charge controller out

Installation: I found it them easy to use and install.

Acuracy: I am very happy with it's performance and acuracy, I've tested it against other meters, charge controller displays and multimeters.

Support: I had to contact their customer service as there was some confusion (created by me) and they were super helpful.

Usage environment: I am using this with a 24V battery system (Voltax), a Epever 200W inverter and 1200W of Canadian Solar panels. You can see them in action on my EcoAmbitionsAustralia YouTube channel in more detail.
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Les
5.0 out of 5 stars to make it work require different sizes of ring terminals & a different cable colors.
Reviewed in Canada on April 22, 2023