500A LiFePO4 Battery Monitor with Shunt – WattCycle-US

The 12V 100Ah MINI Winner: 100% Rated Capacity. Proven Protection. Battle-Tested Build. 🛒 >>>

⚡️48V 314Ah wall-mounted home battery: Up to 75 Hours of Power. One Charge. Zero Blackouts.

500A LiFePO4 Battery Monitor with Shunt

Regular price $79.99
  • 3.93 x 2.40 x 0.66 Inches
  • With an accuracy of 1%
  • PVC waterproof screen protector and bright backlight
  • Compatible with default 12V LiFePO4 batteries
  • LCD material display lower power consumption, saving power

User Manual

Warranty Policy

WattCycle Warranty Policy

Thank you for choosing WattCycle. This warranty policy applies to all products purchased through official WattCycle channels and authorized distributors. Please read this policy carefully before installation and use.

I. Warranty Commitment

WattCycle warrants to the original consumer that under normal use conditions, products shall be free from defects in material and workmanship from the date of original purchase.

1. Warranty Period

Product Category

Specific Model/Series

Base Warranty

Extended Warranty (with Registration)

LiFePO4 Batteries

All new battery models

5 years

2 years (7 years total)

Like-New Products

All like-new models

1 year

Battery Cells

All models

No warranty

Accessories

Chargers, inverters, controllers, wiring cables, etc.

1 year

Note: Extended warranty must be activated through product registration on the official WattCycle website within 3 months of purchase.

2. Warranty Period Calculation

  • The warranty period begins from the original consumer’s purchase date.
  • Valid proof of purchase (order screenshot, invoice, etc.) is required to establish the purchase date.
  • Repaired or replaced products do not extend the original warranty period, which remains based on the original purchase date.

II. Warranty Claim Process and Fees

1. Claim Process

  • Step 1: Contact WattCycle Customer Service (service@wattcycle.com), describe the issue, and provide proof of purchase.
  • Step 2: Our technical team will contact you within 24-48 hours to assist with troubleshooting.
  • Step 3: Once the issue is confirmed as a quality defect, customer service will provide a Return Merchandise Authorization (RMA) number and return instructions.

2. Fee Responsibility Rules

Scenario

Resolution

Shipping Responsibility

Notes

Quality issue (within 6 months)

Free replacement/refund

WattCycle covers shipping costs

Requires quality defect confirmation, valid proof of purchase, within warranty period.

Quality issue (after 6 months, within warranty)

Free replacement

WattCycle covers shipping costs

Requires quality defect confirmation, valid proof of purchase, within warranty period.

Personal reason (return within 30 days)

Return for refund

Customer bears return shipping

Original packaging intact, product in good condition. Warehouse restocking fees will be charged.

Personal reason (return after 30 days)

Return for refund

Customer bears two-way shipping

Warehouse restocking fees and depreciation fees will be charged.

Wrong item shipped / Missing item / Transit damage

Free replacement

WattCycle covers shipping costs

/

Order cancellation (before shipment)

Refund

No shipping charges incurred

/

Over 6 months (non-quality issues)

Returns not accepted

/

/

3. Refund Policy

  • Refunds are applicable only for quality issues reported within 6 months of purchase. Quality issues identified after 6 months will be resolved through product replacement.
  • The refund amount will be calculated after final verification, deducting any applicable fees, and returned via the original payment method.
  • Refunds will be processed via the original payment method within 3-5 business days after receipt and inspection of the returned product.

III. Warranty Exclusions (Limitations of Liability)

This warranty does not apply to damage or malfunction caused by:

1. Accidents and Force Majeure

  • Accidents, abuse, misuse, or negligence
  • Natural disasters such as fire, flood, lightning, earthquakes, extreme temperatures

2. Improper Use and Installation

  • Failure to follow installation, operation, or maintenance instructions in the product manual
  • Voltage/current mismatch, reverse polarity connection
  • Use of incorrect fuses or undersized cables
  • Series or parallel connections exceeding permissible limits (e.g., systems exceeding 48V)
  • Mixing with other battery brands

3. Unauthorized Modifications or Repairs

  • Any disassembly, modification, or repair by unauthorized personnel
  • Altered, damaged, or removed serial numbers

4. Normal Wear and Tear and Commercial Use

  • Cosmetic wear or scratches from normal use.
  • Natural capacity degradation over time (normal aging).
  • Use exceeding the product’s designed cycle life or technical specifications.

5. Long-Term Inactivity

  • Damage resulting from failure to perform periodic charging maintenance for over one (1) year.

6. Other

  • Inability to provide valid proof of purchase.
  • Products that have been fully refunded through other means.

IV. Final Provisions

  • WattCycle reserves the right of final interpretation of this warranty policy.
  • This policy may be revised periodically. All changes will be published on our official website.

Contact Information:

📧 Official Customer Service Email: service@wattcycle.com

🌐 Official Website: www.wattcycle.com

Shipping Service

Thank you for choosing WattCycle for your LiFePO4 battery needs! We understand that getting your batteries quickly and safely is important to you. This policy outlines the shipping process for WattCycle orders.

Destinations:

  • We only ship orders to Continental 
  • Currently we DO NOT ship to Alaska, Hawaii, and Puerto Rico.
  • Please do not use PO Box addresses, which are not within the delivery range of FedEx. If you accidentally use such addresses, please contact us to change them in time to avoid delays in delivery.

Shipping Fee:

  • FREE shipping on all orders
  • Shipping method: UPS Ground & Fedex

Shipping time:

The time frame of an order delivery is divided into two parts:

  • Processing time: 1-2 business days
  • Shipping time: 2-5 business days
  • The shipping will delay for some objective or uncontrolled reasons. We will notice our customer ahead for delays.

Tracking Your Order:

  • Once your order ships, you will receive a confirmation email with a tracking number. You can use this tracking number to track the progress of your shipment on the carrier's website.

Disclaimer:

  • While we strive to meet the estimated delivery times provided, these are estimates and actual delivery times may vary depending on factors beyond our control, such as carrier delays or weather conditions.

Changes to This Policy:

  • We reserve the right to modify this Shipping Policy at any time. We will post any changes to this policy on our website.

We appreciate your support! If you have any questions about our shipping policy, please feel free to contact us at service@wattcycle.com.

Description

  • Accurate Measurement: WattCycle battery monitor can measure the power with an accuracy of 1%, which allows you to allow the actual voltage and power of your battery and charge the battery in time.
  • LCD Display: It is equipped with PVC waterproof screen protector and bright backlight, even in the daytime outdoor environment, you can clearly read the content of the screen, LCD material display lower power consumption, saving power.
  • Suitable for a Wide Range of Battery Types: WattCycle battery tester is suitable for all types of batteries, including lithium iron phosphate, lithium-ion, lead-acid batteries (AGM, GEL). It is compatible with 12V/ 24V/ 36V/ 48V/ 60V/ 72V/ 84V batteries, default 12V lithium batteries.
  • IPX7 Waterproof: Fully enclosed protective casing to achieve IPX7 level of sealing, it can be used outdoors or in wet environments, even in rainy days.
  • Multi-scenario Application: It can be used to test the voltage and capacity of batteries in caravans, motorbikes, golf carts, automobiles, cars, ships, boats and so on.

Reviews (615)

Customer Reviews

Based on 615 reviews
88%
(541)
11%
(66)
1%
(4)
0%
(2)
0%
(2)
C
Customer (Hungary)
It arrived quickly

It arrived quickly, although I haven't used it yet, the voltage is fine, I was able to charge it. I don't know exactly what secondhand means, but it looks new from the outside. I have previously bought 2pcs 24v/100Ah batteries from them and have been using them with satisfaction for my solar system for about a year. That's why I dared to buy a battery for my small boat here.

D
Donald

Great service

S
Steve

I have an older 24 V solar array hooked to 12 V batteries. The batteries were over 10 years old and dying. I did a direct swap and they worked perfectly. I am ordering more.

S
Suzanne Dale (United States)
Did not receive the battery charger.

Originally told battery charger was out of stock and a replacement would be sent. Then I was sent a 12v charger instead of 24v. Wattcycle has been difficult to communicate with to resolve this issue. I am still waiting. Update: I received a $100 credit for the charger which I am satisfied with. Also, I check the capacity on each of my batteries and they were excellent. Now I give 5 stars.

T
Teresa

Happy with quality snd service

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

WattCycle Lithium Battery Monitor

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FAQ about Lithium Battery Monitor

Q1: What are the applicable battery specifications for it?

A1: Various types of battery packs with operating voltages ranging from 8V to 120V can be used, including lithium batteries, lithium iron phosphate, lead-acid, nickel-metal hydride, etc. Please note that this product must be used with a sampler.

Q2: What can it used for?

A2: This product is a high-precision current collection-type battery energy meter (also known as a Coulomb counter). It can accurately detect real-time voltage, current, power, true capacity, remaining usage time, and other parameters of the battery pack, allowing you to understand the working status of the battery at any time. It can be used in various products such as RVs, electric beds, electric vehicles, emergency power supplies, energy storage power supplies, measuring equipment, medical devices, various instruments, and meters that use batteries.

Q3: Dose it support the communication function?

A3:
Yes, it does. This product can be customized with TTL-level serial port communication functionality to upload battery meter parameters to the host computer. The battery meter sends parameters once per second during operation and adopts an internally secure and reliable optocoupler isolation method. For detailed information, please refer to the "WT-M03 Coulomb Counter TTL Serial Port Communication Protocol".

Q4: Do you have battery box for this battery?

A4: Not yet, WattCycle 12V 100Ah batteries are perfect fit Group 24 size battery box. And also fit higher snap-top battery box like Group 27 and Group 31.

Q5: Can it charge for the EV battery?

A5: Yes! It can charge for the 12V EV battery.

Q6: Is a user manual included?

A6: Provide an answer to the question here, with as much detail as possible to help your customers.

Q7: What is the warranty policy?

A7: This product should not be exposed to direct sunlight for prolonged periods, nor should it be subjected to extreme conditions below -10°C or above 50°C, as this may shorten the lifespan of the LCD screen.

From the original date of purchase, this product is covered by a 1-year warranty. Any non-human-made quality issues occurring during the warranty period will be repaired free of charge.

This product may undergo technical improvements or updates. If there are discrepancies between the product you purchased and the descriptions in this manual regarding appearance, technical specifications, etc., please refer to the actual product or the information provided on the website.