⏳7 Day Flash Sale: 12V 100Ah Cranking Battery

⚡Only $479.99/PACK

500A LiFePO4 Battery Monitor with Shunt

$7999
Free Shipping, taxes and discounts calculated at checkout.
  • 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

Warranty Policy

At WattCycle, we stand behind the quality and performance of our batteries. We offer a comprehensive warranty to ensure your satisfaction with your purchase.

Please read the product manual carefully before installing and using the product, and use the battery correctly under the instructions of the manual.

Warranty Period

WattCycle warrants that the product will be free from defect in workmanship and material to the original consumer purchaser.
The warranty period starts on the date of purchase by the original consumer purchaser.

  LiFePO4 Batteries (>50Ah) LiFePO4 Batteries (≤50Ah) Cells / Like New Batteries LiFePO4 Battery Charger Accessories
Website 5+2 Years 3 Years 3 Years 3 Years 1 Year
Amazon 5+2 Years 3 Years 3 Years 3 Years 1 Year
Temu 5+2 Years 3 Years 3 Years 3 Years 1 Year
Ebay 5+2 Years 3 Years 3 Years 3 Years 1 Year

Note: Only registered customers can extend the warranty service by 2 years. Final interpretation rights belong to WattCycle.

Question: Will my lithium battery still be covered under warranty after being connected in series or parallel?

Answer: As long as your product meets the warranty conditions and you have registered for the warranty, you will receive the corresponding warranty period. Connecting the batteries in series or parallel (or other normal operations) will not affect your product's warranty duration.

Warranty Statement

Any defects in material, workmanship of your product will be covered after you provide any valid proof of purchase and information including but not limited to:

1. A purchased order number made through WattCycle official stores.
2. Sales invoice or order confirmation email that clearly shows the description of the product, its price, and sales channel.

Note: The limited warranty is restricted to the country of purchase. The warranty will be invalid on the items once they are taken or shipped to other countries.

Exclusions of Warranty 

1. Misused, abused, damaged by accident or damaged due to force majeure. (e.g. lightning strikes, tornadoes, hurricanes, etc.);
2. Unauthorized modification, repair, dis-assembly or operation not in accordance with the official instructions or manuals;
3. Lost, stolen or full refunded product;
4. Warranty period expired;
5. The battery model on the warranty certificate does not match the actual item;
6. Product wear and tear through the usage of time.

Procedures for Warranty Claims

We’ll assist to analyze the consumer’s problem within 24 hours, and help solve the problem, restore battery usage, and introduce the optimal use method.

If our product fails to work normally, the consumer assists us in completing all the battery testing, and both parties confirm that the product does have quality problems, we’ll send a new battery replacement to the defective battery after it has been returned to our US warehouse by the pre-paid label we prepared. And the defective battery will be checked and tested by our technical team to analyze the problem.

From the date of purchase and within 6 months, if our products have quality problems and cannot work normally, we can provide replacement or refund services; Within 7 months from the date of purchase to the end of the warranty, if our products have quality problems and cannot work normally, we can provide replacement services.

Any product(s) returned for valid warranty service will be shipped at the expense and risk of us. We will provide a pre-paid label to customers who need to return the products to the designated place at the specified time.

Batteries that have been serviced or replaced under their warranty period do not receive extended warranties. Instead, the serviced/replaced battery(-ies) will abide by the original warranty period issued when first purchased.

Changes to This Policy:

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

Contact Us:

If you have any questions about our Warranty Policy, please feel free to contact us at service@wattcycle.com.

We encourage you to read this warranty policy carefully. By purchasing a WattCycle battery, you agree to the terms and conditions of this warranty.

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.

Shipping Warehouse:

  • Address: 20533 East Walnut Drive North, Walnut, California 91789
  • Tel: 909 9600600
  • Email: 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 (2)

Customer Reviews

Based on 2 reviews
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t
tom ferris
Outstanding support

Replaced damaged battery at no cost.

t
t.J.

3 100ah batteries wired in series monitor only shows 100ah, not 300ah.

Hi, thanks for choosing WattCycle. Connect 3 batteries in series can not increase the capacity, it will in crease the voltage. Your new system is 36V 100AH (3 in series) If you connect them in parallel you will get 300AH.

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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LiFePO4 Battery Monitor Functions

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Lithium Battery Monitor Information

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LiFePO4 Battery Monitor Setting

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Applications of Bluetooth 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.

Based on 524 reviews
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(463)
9%
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(4)
Struggling to get support

The first time I used it, after charging for a few hours it started cycling on and off every few minutes with the voltage on the battery increasing. When it hit 14.8V I unplugged it since that seemed beyond the battery specs.

I asked WattCycle support if that was normal and the reply I got was “ We recommend that you can stop charging before it full charged, which can avoid such situation.”. I already have a lead acid charger which can partially charge my lithium batteries - I bought this charger so I can fully charge them when needed

So, I still do not know if the charger is functioning correctly or not. I would love to change my review if can get a satisfactory answer from WattCycle, but right now I am not happy with this purchase. (WattCycle are you reading these reviews? If so, I would love to be contacted to discuss this further so I can understand if this is normal behavior or if the charger has a problem.)

Absolutely love these batteries. I already had 3 of the 12v 100Ah for my Ranger Z520 and when I bought my Clubcar I knew I was going with the 12v 50Ah. I dropped 320lbs off my golf cart and I used to have to charge the lead acid batteries every day just to get around my neighborhood. So far the first charge on the WattCycle 12v 50Ah has lasted 4 days!!! I am extremely satisfied with my purchase!!!!

Runs hot

Can't beat the price and it's compact but it runs hot. The surface is smooth plastic without vents or fins. Maybe it is fine running hot. I would make sure that as much surface as possible is exposed.

4 bank charger

So far so good

Great battery at a great price

Very well constructed, packaged, and documented battery.

Battery

These batteries are so lite compared to my acid battery,and the trolling motor I can run so much longer and still have enough battery left to fish another day.wow nice😊

Seem to work well

I bought these for a rv to replace lead batteries. Pleased so far. Good reserve power now. App is a plus.

Much small and more powerful battery

Wattcycle battery with small size and double power. I have test it on my boat, it is much better than old style battery; the charge time is much quick than the old lead battery. Even only having for one week but I love it.

Great product for the price

So far it has charged all my batteries as it is supposed to. Easy install and smaller than my minn kota.

Smashing Smallmouth Bass

Couldn't be any happier I bought 3 100ah Pro trolling motor batteries and a 4 bank Charger Works Great

Great battery and excellent service!

Batteries received quickly and well packaged. Watt Cycle honored a price drop the day after I ordered without hesitation. Communication has been excellent. I requested information regarding the batteries to program my charger isn’t it was answered promptly.
The batteries are great looking and up to this point perform well. I’m very pleased with my purchase!

Worked well.

I purchased this charger to fully charge my 3 new 12v 100ah batteries before hooking them up in series for my golf cart. Did the job quickly.
Now I have the 36v charger installed that is also working very well.
Batteries have performed well for the 2 weeks they have been in the cart. Less weight, a tad bit faster and longer run time.
Happy so far!!

I’ve purchased. 12v 20ah and a 12v 100ah.Incredible price.US soon.

Purchased 12v 20 ah and 100ah batteries with BMS. Incredible price. Only negative is it’s made in China

I would buy again...in 10 years.

I have purchased at least 4 of these batteries as storage for the 30KW whole-house solar system that I am building and have not had any issues with any of them. I thank Will Prowse for reviewing these batteries on YouTube, which has given me confidence that I had made a great purchase!

Great battery

Works great in a DIY solar power box I built.

Great battery and great customer service.

We've all been seeing the reviews on YouTube. Well, they are correct, the battery is everything it's cracked up to be. I have purchased 3 Minis so far. I had a question about one and got a response back in less than 24 hours.
This battery is a great product at an unbelievable price. The Bluetooth model is well worth the money.
Thanks for the great customer service.

Awesome

This charger charges extremely fast. I use it on my two Watt Cylce 100 watt batteries in parallel. I have even used it to charge my batteries while plugged into my 3500 watt generator and it works perfect.

very good unit

This battery works very well for what I need it for, I just ordered another one.

Great customer service

Ordered 8 of these and was very impressed by the quality. Once I was ready to put them into service I found one battery that would not communicate via bluetooth. Contacted the seller and in short order they sent me a replacement . Excellent customer service.

I LIKE THE BLUETOOTH

I LIKE THE BLUETOOTH

Furnace Power Backup

I used this battery with an inverter for furnace power backup and testing shows I can get 7-8 hours on very cold days. The battery easily meets it's AH rating and the Bluetooth functionality is great.

Great battery

Love the Bluetooth feature and app to see exactly what percentage is left.

Great light weight long lasting batteries

So pleased with them !!