SKU: 21978739940

WEN 40-Volt Max Lithium-Ion 4.0 Ah Rechargeable Battery, Model 40404

Sale price$78.30 Regular price$87.00
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Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

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Description

WEN 40-Volt Max Lithium-Ion 4.0 Ah Rechargeable Battery, Model 40404WEN 40V Max 4. 0Ah Lithium Ion Battery Pack Power your WEN 40V Max lawn and garden tools with this 4. 0Ah lithium ion battery. It delivers fade free power, an onboard charge meter, and quick release design, and works across the WEN 40V Max system. Key Features: System Compatibility: Works with the entire WEN 40V Max lawn and garden lineup Fade Free Performance: Lithium ion cells maintain consistent power throughout the charge Longer Runtime: 4. 0 amp

WEN 40V Max 4.0Ah Lithium-Ion Battery Pack

Power your WEN 40V Max lawn and garden tools with this 4.0Ah lithium-ion battery. It delivers fade-free power, an onboard charge meter, and quick-release design, and works across the WEN 40V Max system.


Key Features:

  • System Compatibility: Works with the entire WEN 40V Max lawn and garden lineup
  • Fade-Free Performance: Lithium-ion cells maintain consistent power throughout the charge
  • Longer Runtime: 4.0 amp-hours to tackle larger outdoor tasks
  • Charge Status Meter: Onboard LEDs show remaining battery life at a glance
  • Easy Swap Design: Quick-release button for fast installation and removal

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Battery Power Type Lithium Ion
Battery Voltage 40V Max
Battery Capacity 4.0 Ah
Charger Included No (charger sold separately)
Rechargeable Yes
Color Black/Orange
Number of Batteries Included 1
Power Tool Accessory Type Battery
Used With Equipment Type Blower, Chainsaw, Hedge Trimmer, Push Mower, Snow Blower, String Trimmer
Charge Time 120 minutes
Product Length 6.89 in
Product Width 3.78 in
Product Height 2.48 in
Onboard Features Battery charge meter; quick-release button

Frequently Asked Questions (FAQ):

Q: Is a charger included?
A: No. The charger is sold separately; use WEN 40V Quick Charger model 40400.


Q: How long does it take to charge?
A: Approximately 120 minutes using the WEN 40V Quick Charger.


Q: Which tools are compatible?
A: Designed for WEN 40V Max tools, including blowers, chainsaws, hedge trimmers, push mowers, snow blowers, and string trimmers.


Q: Does the battery hold charge during storage?
A: Yes, lithium-ion chemistry maintains charge well during periods of nonuse.


Q: Is it rechargeable?
A: Yes, this is a rechargeable lithium-ion battery pack.


Power, Polished

Sleek in bold WEN orange and black, this 40V Max battery brings modern utility to your outdoor toolkit. The crisp onboard meter is a subtle, tech-forward detail that keeps your workflow seamless. Pair it with a streamlined charging station and keep two on rotation for uninterrupted lawn days. It’s the refined energy source that makes luxe outdoor living effortless.


Equip your WEN 40V tools with dependable, fade-free power—add this 4.0Ah battery to your cart today.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 21978739940

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Gerry Jarcia
Natrona Heights, US
★★★★★ 4
great for certain items
i am an infrequent buyer of the assurion warranties but do use them for stuff i think might be something i'd claim on like the very low priced inflatable paddleboard i got. i can't imagine the thig lasting 2 years but the warranty makes that a no brainer. i have only once in my history had to make a claim and it was an easy process where they just automatically refunded the price of the item
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Reviewed in the United States on March 4, 2025
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SM Privette
Omaha, US
★★★★★ 5
Immediate response
I reached out regarding my treadmill not working due to the belt not staying on the track and sliding to the left and Asurion immediately provided me a gift certificate on Amazon for the amount I paid for that treadmill and I was able to purchase another one to replace it that was much better!
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Reviewed in the United States on April 3, 2026
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Maria
Belleville, US
★★★★★ 5
Quick response and turnaround
So happy I purchased the Asurion protection plan. The product I purchased was damaged and my claim was covered right away without any issues.
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Reviewed in the United States on March 31, 2026
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GUSTAVO Arriens
Whiting, US
★★★★★ 5
Simple and not Drama claim process.
’ve had Asurion coverage for a couple of years and never needed to use it until recently, when my pool salt cell (less than two years old) stopped working. I had purchased it with an Asurion protection plan, so I contacted them to start a claim. The process was simple and straightforward to follow. In the end, they honored the plan and covered the cost of my salt cell based on the value when I originally bought it. They issued me a gift card that I could use on Amazon for that amount. While prices have gone up and a new cell now costs about $200 more, it was still definitely worth having the coverage. Overall, I’m satisfied with how the claim was handled.
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Reviewed in the United States on June 8, 2026
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lele
Louisville, US
★★★★★ 5
Love this protection plan
Quick and easy. My daughter's cracked her screen on her phone, as soon as it happened I went on the app, filed the claim. Ten minutes later I received the email with the shipping lable. The following day I dropped the phone off at ups and 4 hours later I received the digital gift card. Ive filed several claims since getting the protection plan and with four kids its definitelysomething im glad to have especially since i dont have to buy a protectionplan for each item now. I have filed claims for electric scooter the stoped working for no reason, my son's phone stopped charging, my oldest daughter cracked her phone screen, my son's video game controllers up and died and each time it was quick and easy and no fuss
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Reviewed in the United States on May 13, 2026

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