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43.8V 18A Aluminum Shell LiFePO4 Battery Charger

Sale price $16999 Regular price $26999
Shipping calculated at checkout.

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  • Compact & Design: 11.06 X 5.04 X 3.35 inch | 6.94 lbs
  • 4X Protection: Over voltage / Over temperature / Short circuit / Reverse polarity connection Protection
  • 3 Charging Modes for efficiency and longevity
  • Wall Mountable and convenient installation

FAQs

Making the switch to LiFePO4 shouldn't be a solo mission. At WattCycle, our dedicated team of engineers and battery experts are just a phone call or email away, ready to answer your questions and guide your lithium journey.

      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 service@wattcycle.com.

      Description

      Maintenance & User Precautions

      • Before charging, carefully review the battery's user manual to ensure its compatibility with the charger's technical specifications.
      • Ensure that the charger's positive and negative terminals are correctly connected to the corresponding terminals of the battery (positive to positive, negative to negative).
      • During the charging process, ensure that the input/output connectors are securely attached.
      • lf any abnormalities or damage to the charger or battery are noticed during the charging process, immediately disconnect the input/output cables.
      • If using alternative input cables, ensure that the cable can handle the charger's maximum input current and that the charger's input voltage is within its operating range.
      • lf an extension for the output connection is needed, ensure that the connection cable can handle the charger's maximum output current, and the voltage drop between the charger and the battery connection should be kept as low as possible. ideally less than 1% of the battery voltage, Otherwise, it may affect the charging effectiveness.
      • The internal voltage of the charger is high and poses a significant risk .In case of any defects, please contact service@wattcycle.com promptly. Users and non-professional repair personnel are prohibited from disassembling or modifying this product without authorization.
      • Do not use the charger during thunderstorms or lightning storms.
      • Keep the charger body dry and avoid using it in damp or rainy environments.
      • Avoid using the charger in direct sunlight or near heat sources.
      • Do not use the charger in or near flammable or explosive gas areas.
      • Use the charger in a well-ventilated and dust-free area.
      • Do not cover the ventilation ports and leave at least 10 centimeters of space around them.
      • Avoid shaking, impacting or throwing the charger with force.

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      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.

      36V 18A Battery Charger – Premium Charging Performance

      Experience top-tier charging with the WattCycle 36V 18A LiFePO4 Battery Charger. Designed for efficiency and reliability, it’s the perfect companion for your 36V lithium batteries.

      Built to Last: Durable Aluminum Shell Design

      Featuring a rugged aluminum shell, this charger is built to withstand harsh conditions, ensuring long-lasting performance and protection.

      Advanced Safety Protections for Peace of Mind

      Equipped with overcharge, overcurrent, and short-circuit protection, this charger ensures safe and reliable charging every time.

      Optimized for EZGO TXT

       Designed to meet the charging needs of EZGO TXT golf carts.

      Compact & Portable: Perfect for On-the-Go Charging

      With its lightweight and compact design, this charger is easy to carry and store, making it ideal for travel or everyday use.

      Tech Specs

      SPECIFICATION

      Brand WattCycle
      Model 36V18A
      Input Voltage 100-240Vac50/60Hz
      Output Voltage 43.8V
      Output Current 18A
      Product Size (Inches) 11.06 X 5.04 X 3.35 inch
      Net Weight 6.94lbs / 3.15kg
      Relative Humidity 5%~95%
      Atmospheric Pressure 70KPa to 106KPa
      Temperature Range In operation: -10°C to 45°C/14°F to 113°F
      In storage: -40°C to 75°C/-40°F to 167°F

      CHARGING MODE

      Waiting Mode 🟢(Flashing)
      Charging (<80%) 🔴(Flashing)
      Charging (>80%) 🟡(Flashing)
      Charging Completed 🟢(Always On Green)
      Based on 621 reviews
      86%
      (535)
      11%
      (70)
      2%
      (10)
      0%
      (2)
      1%
      (4)
      M
      Worry-Free Purchase
      Mark Mongold
      Good transition with Watt Cycle

      Great battery product. A good transaction with them. The 314 ah 12v battery shipped from California and arrive about a week after ordering.

      Battery arrived with low voltage would not take a charge -refund received

      The battery arrived with 2.85 Volts and would not take a charge from any of my LifePO4 chargers - even the ones that said the could re-activate batteries that were shut down. I attempted all of the troubleshooting from Wattcycle tech support to no avail. I was promptly refunded.

      Good amperage batteries for their size

      Batteries arrived in good shape & well packed. Came with short & longer bolts which was helpful. I installed 4 of them in a boat as the primary house side. They replace 4 each 210 AHr AGM batteries that were half again bigger and twice as heavy (120 lbs each) as these ~60 lb 314 AHr LifePO4 batteries. This tripled my house capacity & removed 240 lbs of the weight. I added 250A MRBF Fuses to each +positive battery, as well as a 350A Class-T fuse on the overall DC+ side. Additionally, I added a Victron 500A Waterproof SmartShunt to monitor the charge/discharge levels. For charging, I added a Victron Orion XS 50A DC to DC charger for the alternator, and a 40A LifePO4 AC to DC Charger with a remotely activated plug. So far, the batteries seem to be working as advertised.

      4 Batteries for Golf cart

      I purchased 4 batteries and a charger for our golf cart, to surprise my husband. They arrived in a timely matter even with the tariffs going on. My husband was so very happy. Our golf cart is a creation that my husband created....it was 36v now it's 48v....I don't know it's a lot of stuff, but what I do know is we pulled a lot of batteries out of the cart (8 I think) some for the cart one for the radio, a lot, about 500lbs of batteries give or take and now we have just 4 LIGHT WEIGHT lithium batteries installed and that cart hauls a$$. I upped his life insurance and my medical.
      I will definitely recommend this company. Both my daughters and their husbands have golf carts and they have already said when it's time, they are going this route.

      12V 314AH LIFEPO MINI

      Installed WattCycle’s 314AH in our camper with a new lithium charge inverter. Also installed a 2000 watt inverter and an auto transfer switch. I couldn’t be happier. The WattCycle 314AH performance is exceptional. I previously had two Trojan deep cell golf cart batteries which contributed a lot of weight. Though they were decent batteries they don’t compare to WattsCycle’s 314AH, in performance and weight savings.
      At first I thought the battery I purchased had an issue. It was showing only 5.6V on the multimeter. Come to find out that WattCycle’s Bluetooth app. has two buttons to turn on and off charging and discharging. I had discharging turned off. When I hit the discharge button on the app. everything came to life.
      What an awesome option.
      Hoping to add another 314AH in the future.
      Awesome battery and Company. They quickly responded to my emails. Great customer support.
      Chris

      Awesome produc,t excellent price, and super fast delivery A++. Upgraded to a 36v system from 24 in less space. Just know that you have to charge them overnight they don't ship lithium batteries at full charge

      A
      Worry-Free Purchase
      Adam Osbekoff
      Right battery, wrong posts

      I ordered a battery and the threaded posts were too large for the battery.

      Works great

      I got the charger with my 100ah mini and everything works as it should. I’ve used the battery 3 weekends running my trolling motor and fish finder and it still has 77 percent at this rate I’ll only have to charge it 4 or.5 times this Summer so if it lasts 5000 cycles it will last me 1000 years great buy

      HOT! HOT! HOT!

      This battery charger runs soooo HOT that I thought it might catch fire. I'm ditching it and buying another....

      Good so far

      Only have had it installed for about a month, the only thing so far that I would like to see changed is more mounting holes, that way you have more options in tight places like I had to mount it.

      Works as advertised.

      Easy to install, instructions are fine. Initial operation and regular operation instructions could be a bit better, but study it, then it all makes sense.

      Arrived on time and as advertised. Have not had time to evaluated performance, but Bluetooth connection was was simple and effective. Battery functions as it should. So far, so good!

      Good battery so far…bad app

      Time will tell on the battery itself but the ordering process was smooth and delivered as promised. The app is another story. The available instructions are worthless and there seems to be confusion as to what app to actually use. The app screen is not intuitive and provides info that is confusing.

      24 volt wiring kit

      Easy to use and works as it should

      Battery contector

      Parts are well make & work well

      B
      Worry-Free Purchase
      Bil Jackson
      1 month in

      So far so good!!

      Battery seems good; bluetooth and app, no so much

      Not sure how to rate this battery as the bluetooth range seems really small and the "new" app seems to have issues. I can't seem to get an answer from wattcycle on if there's a firmware upgrade on the bluetooth or when the new app will be in better shape. Once I get a response, I'll update my review/rating

      vert impressed

      I needed longer battery life, my old 100ah battery just wasn’t cutting it. With this battery I can run my fridge/freezer 3 times longer without worrying about running low on battery life.

      12v50Ah batteries

      Seems to be really good batteries. They are performing well.

      Excellent Batteries

      I have 2 of these 100ah batteries hooked up in parallel that is use to power my mobile ham radio in my truck. They perform flawlessly. Fantastic price and shipping was fast. Highly recommend.

      Bye-Bye, Lead-Acid Bulk!

      Switched my off-grid cabin to this—saved 150lbs! The true 314Ah capacity lasts 2 days longer than my old 420Ah lead-acid bank. BMS protection is rock-solid. Zero regrets.

      Weight Savings Revolutionized My Trailer

      Saved 200lbs swapping to this lithium beast. Towing efficiency improved, and the 314Ah capacity outlasts my old 400Ah lead-acid. BMS is a safety hero during fast charges.

      Lithium’s Math Just Makes Sense

      Lead-acid needs 600Ah to match this 314Ah? Nonsense! This powers my trolling motor all weekend. Lighter, smaller, longer-lasting—the ROI is undeniable.

      Unbeatable Value vs. Lead-Acid

      Compared 314Ah lithium to 400Ah lead-acid—this outperforms in actual capacity while taking 60% less space. The BMS ensures stable voltage during high draws. Efficiency is unreal!

      Great batteries

      Converted the RV over to lithium batteries in May with 2 100ah batteries they fit great and so far they have worked well. Shipping was fast and the batteries arrived in good condition. Would order from watt cycle again.