4AWG 11-Inch Battery Inverter Cable Set – WattCycle-US

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Official Price Match — We refund any lower price across our stores.

4AWG 11-Inch Battery Inverter Cable Set

Regular price $29.99

Features

  • Compact: 2.91 x 2.79 x 3.81 Inches
  • Performance: 4 AWG Wire, perfectly suited for 3/8" bolts and SAE #4 copper wire connectors
  • Copper Terminals: 95% galvanized, exceptional corrosion and oxidation resistance
  • Unparalleled Flexibility: exceptional bendability and durability even in the harshest marine environments
  • High temperature resistance: Up to 105°C (221°F)
  • Warranty: 1 year for free

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 service@wattcycle.com.

Description

  • High Performance: 4 AWG Wire, perfectly suited for 3/8" bolts and SAE #4 copper wire connectors
  • Copper Terminals: It features 95% galvanized copper terminals, which ensures exceptional corrosion and oxidation resistance
  • Advanced Crimping Process: The process optimizes current flow and minimizes resistance for superior performance
  • Unparalleled Flexibility: It retains exceptional bendability and durability even in the harshest marine environments
  • High temperature resistance: Capable of withstanding temperatures as high as 105°C, ensuring dependable functionality even in the most rigorous conditions.

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Payment & Security

Payment methods

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  • Union Pay
  • Visa

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

Based on 2200 reviews
89%
(1955)
10%
(220)
1%
(13)
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(8)
battery capacity is significantly less than promised

running cycle tests on my new 314ah mini indicates a total capacity of less than 1 kilowatt hour.

Perfect Battery for my Class A Motorhome

Paired with a 3000W inverter in my Class A Motorhome the 300amp BMS exceeded expectations. The Bluetooth app works great as well.

If you’re thinking about which battery to pull the trigger on, go with this battery, you won’t be disappointed.

Batterie de 100 A

Batterie de 100 A.H conforme aux spécifications. Mais faire attention au courant de pointe qu'elle peut fournir. Dans mon cas lorsque je la branche à mon onduleur outback 2,5kw, au démarrage de ce dernier le BPS de la batterie entre en mode protection et il coupe l'alimentation. Je crois que au démarrage la banque de condensateur à l'entré cc de l'onduleur cause une surcharge de courant qui dépasse la capacité offerte par le BPS. Pour réveiller la batterie, je dois lui brancher un chargeur quelques instants. Donc dans mon cas pour éviter ce problème je dois utiliser 2 batteries en parallèle.

Fast

Fast shipping

Perfect product

Perfect product, fits under the passenger seat of a Fiat Ducato CamperVan from Adria. Happy with the big autonomy and the app.

No la he probado todavía pero tiene buena

No la he probado todavía pero tiene buena pinta

So far working well

Bought 2 of these Mini 314 batteries and after one month seem to be working well. Two issues, price fluctuates depending which site, time of day, etc and the batteries arrived almost 1 week apart. We were lucking we had the time and flexibility to install them separate, but this is not ideal for anyone using the batteries in the same system.

Disapointed.

to [****]

Hi again, I thank you for the free battery charger in lieu of the free battery charger & free battery as an attempt to fulfill your obligation to your company's Price Matching policy, however I do not find this to be satisfactory for the following reasons.

As an attempt on my behalf I went ahead and bought the same battery again but this time during your BOGO sale as I was afraid that they would sell out, I did this a day before your first reply back to me in regards to your price matching (bought on 12-01-2025) - (you replied on 12-02-2025) had I known that WattCycle would not honor their "Price Matching Guarantee" OR their BOGO sale I would not have bought the second battery, so now I am out of two yes 2 batteries.

Due to the miscommunication / misunderstanding on how WattCycle conducts their business with those of us that use our Amazon Credit cards for our transactions with WattCycle I will be returning what WattCycle has sent me, Two batteries, two battery chargers and two small battery monitors instead of the four (4) each that was offered through your online store front Price Matching offer & your BOGO sale.

I am now glad that I went ahead and paid for the S050 Shipping Protection for $14.98 as now I won't have to pay for their return.

What upsets me the most though is now it’s too late for me to buy from another company during their sales event along with my disappointment with your companies policies.

Please understand that all I ask for is what Wattcycle has offered on their web sight, nothing more but nothing less.

I can not comment on their performance or their durability since I have not used them but I am sure that they are a great product but I can not due business with a company that will not honer what they advertised. Mr. Kelly

Everything came fast packaged, and delivered professionally I highly recommend

B
Shipping Protection
Brad Cougle
Not really sure why I got this.

Don't think I needed this since purchasing in the USA has built in coverage, doesn't it? Happy to have my $20 go to another battery.

Bardzo lekka jak na razie jest OK sprawdzimy końcowo na wodzie

Bardzo lekka jak na razie jest OK sprawdzimy końcowo na wodzie .

Megvagyok elégedve

Megvagyok elégedve, ez a jövő akkumlátora!

Bateria 628 Ah

compre la bateria a mediados de Noviembre, aun no he podido montarla porque el taller no tiene disponibilidad hasta finales de Enero, solo puedo decir que la bateria tiene muy buen aspecto y que el paquete llego dentro del plazo indicado y en buen estado

Great Product

Very nice and efficient charger. I purchased in order to charge / maintain my new 100aH WattCycle battery until I can install in RV in the Spring. While my on-board charge controller is Li capable, this is an excellent back-up.

Lot of energy as expected

Lot of energy as expected. Ready for next power outage.

NAGYON JÓL MŰKÖDIK

NAGYON JÓL MŰKÖDIK.

It works great without any problem

It works great without any problem. I like it very much.

So far so great!

So far so good.Its been running my Planar D4 heater for 2 days. Still full charge! The only reason for the 4 star is I ordered a 280ah, the battery I was sent says 300ah on the side. Emailed the company about it, have had no response.

Augment Ecoflow Delta Pro 3 battery storage

Works wonderfully with the Ecoflow 800 watt alternator charger plugged into a Delta Pro 3.

Great deal in what appears to be a quality battery! Chargef it up and anxiously awaiting warmer weather to install in RV.

Even Second-hand batteries from WattCycle are TOP-NOTCH!

I like using second-hand products, it's part of my "waste-not" way of life. That's why I decided to try out WattCycle's second-hand batteries as an addition to my home's energy storage.

Got a second-hand 24V 100Ah a week ago and just had the opportunity to test it, using a Victron SmartShunt. The battery charged to 28.4V (which means that it's not 100% balanced) and gave out 100.6Ah of energy, down to 20.0V. Impressive. I will be testing the battery again, after balancing. I would expect it to go over 102Ah.

Quick delivery and battery works much better

Quick delivery and battery works much better than 12 volt lead acid equivalent so far

Great value!

I use 2 of the 280ah batteries and have been extremely happy with them over the last 1.5 years. I also choose to install the 314ah minis in most of my customers RVs as I own an RV solar installation company. Happy customers!