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Kobalt 40V MAX EXTENDED RUN 4.0Ah Li-Ion Battery (KB 440 03) AUTHENTIC OEM, NEW

US $103.99
as low as $35.47/mo with
Condition:
New
Out of Stock32 sold
Shipping:
US $9.74 USPS Ground Advantage®.
Located in: Whitesburg, Kentucky, United States
Delivery:
Estimated between Sat, Nov 22 and Sat, Nov 29 to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days returns. Seller pays for return shipping.
Payments:
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eBay item number:167510477968
Last updated on Oct 07, 2025 17:55:49 PDTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is ...
Brand
Kobalt
Battery Technology
Lithium-Ion (Li-Ion)
Battery Capacity
4 Ah
Voltage
40 V
Color
Black
Model
MAX
MPN
3809904, KB 440 03
UPC
0692042013904
Category

Item description from the seller

About this seller

Tech Neck 85

99.2% positive feedback73K items sold

Joined Aug 1999
Authentic electronics, also specializing in OEM replacement parts for items manufactured by Apple, Dyson, Shark, Samsung, and more!

Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable shipping cost
4.9
Shipping speed
4.9
Communication
5.0

Seller feedback (14,366)

All ratingsselected
Positive
Neutral
Negative
  • e***b (48)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Works excellent using OEM product as seller suggested in the ad! A good value as it can be expensive replacing these batteries every four or five years. Enough power to mow a few thousand square feet of grass.
  • m***l (52)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    The battery arrived in great condition. It is well the value. Thanks
  • u***u (33)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Quick shipping, brand new in the box and works great
See all feedback

Product ratings and reviews

4.8
40 product ratings
  • 37 users rated this 5 out of 5 stars
  • 2 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 1 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Top favorable review

    Excellent Value Over Lowes Store Price!

    This Kobalt battery is not only a great battery, but also fresh. The battery I received was just over a month old according to its factory printed build date, so it was very fresh. The dates on Kobalt batteries I have received during past purchases at Lowe's have been one-two years old each time. After a full discharge, it does take twice as long to charge as the 2.5 40V but that is not a problem. Five years from the build date seems to be the average lifespan of these Kobalt lithium batteries so the three-year Lowes warranty is of little value - especially considering the price of this battery at Lowes. Very happy with my purchase decision using this eBay seller.

    Verified purchase: YesCondition: NewSold by: wildwolf13rb

  • This battery works well with all my Koba...

    This battery works well with all my Kobalt lawn tools. Works long enough with my other Kobalt batteries to do what I need to. I would estimate it takes 3 batteries of 4-5 Ah to do my about half an acre yard (depending on how wet or tall the grass is).

    Verified purchase: YesCondition: Pre-OwnedSold by: raphaelloberant

  • Definitely doesn't charge but that's why...

    Definitely doesn't charge but that's why I bought it. I had heard you can fix them, so I bought a few for parts to build good ones. My chainsaw only runs on 4 amps or higher

    Verified purchase: YesSold by: bargainshop411

  • The battery is working excellent and is ...

    The battery is working excellent and is newer. Thank you very much.

    Verified purchase: YesCondition: NewSold by: chafedbm

  • justvrecieved charged once and so far so good

    have only used once so far

    Verified purchase: YesCondition: NewSold by: general-auction