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expired Posted by Rokket | Staff • Apr 19, 2025

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expired Posted by Rokket | Staff • Apr 19, 2025

Kobalt 24V Ultimate Output 8Ah Lithium-ion Power Tool Battery

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$59

$139

57% off

Lowe's

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Lowe's has Kobalt 24V Ultimate Output 8Ah Lithium-ion Power Tool Battery on sale for $59. Shipping is free.

Thanks to Deal Hunter Rokket for finding this deal.

Product Details:

Compatible with all Kobalt 24-volt max cordless power tools (sold separately)
Utilizes the latest battery cell technology that high energy 24V power tools demand
Battery pack is optimized for use with XTR tools
Power indicator displays charge status and can be used whether the battery is on the tool or off
Internal circuitry protects the battery pack from extreme temperatures, over-discharge, and over-charge for longer life

Editor's Notes

Written by oceanlake | Staff

Comes with a 3-year warranty.
Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by Rokket | Staff

Lowe's has Kobalt 24V Ultimate Output 8Ah Lithium-ion Power Tool Battery on sale for $59. Shipping is free.

Thanks to Deal Hunter Rokket for finding this deal.

Product Details:

Compatible with all Kobalt 24-volt max cordless power tools (sold separately)
Utilizes the latest battery cell technology that high energy 24V power tools demand
Battery pack is optimized for use with XTR tools
Power indicator displays charge status and can be used whether the battery is on the tool or off
Internal circuitry protects the battery pack from extreme temperatures, over-discharge, and over-charge for longer life

Editor's Notes

Written by oceanlake | Staff

Comes with a 3-year warranty.
Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.

Original Post

Written by Rokket | Staff

Deal Score

+20

Visit Lowe's

Price Intelligence

Model: Kobalt Ultimate Output 24 8 Amp-Hour; Lithium-ion Power Tool Battery | KXB 824-03

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Sort: Lowest to Highest | Last Updated 7/6/2025, 10:18 AM

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Lowe's	$169

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Top Comments

ddelarosa7777

14 Posts

10 Reputation

In for 8 of these things. I love the Kobalt brand and they back their warranties as well so if any of these do die on me, they have a super easy 3 year warranty. Thank you for the deal!!

16 Comments

cantcurecancer

Apr 19, 2025

236 Posts

Joined Apr 2013

Apr 19, 2025

cantcurecancer

Apr 19, 2025

236 Posts

Our community has rated this post as helpful. If you agree, why not thank cantcurecancer

Look at the reviews. Hidden beyond the fake aggregate and AI summary is a sea of reviews talking about how these things die after a few uses.

hoondawg

Apr 19, 2025

194 Posts

Joined Oct 2019

Apr 19, 2025

hoondawg

Apr 19, 2025

194 Posts

Quote from cantcurecancer

Look at the reviews. Hidden beyond the fake aggregate and AI summary is a sea of reviews talking about how these things die after a few uses.

Hashtag: cantcuredeadbatteries

ddelarosa7777

Apr 19, 2025

14 Posts

Joined Sep 2017

Apr 19, 2025

ddelarosa7777

Apr 19, 2025

14 Posts

In for 8 of these things. I love the Kobalt brand and they back their warranties as well so if any of these do die on me, they have a super easy 3 year warranty. Thank you for the deal!!

jimboz28

Apr 19, 2025

68 Posts

Joined Jan 2009

Apr 19, 2025

jimboz28

Apr 19, 2025

68 Posts

Quote from cantcurecancer

Look at the reviews. Hidden beyond the fake aggregate and AI summary is a sea of reviews talking about how these things die after a few uses.

I think most of the reviews you're seeing on this are for the original 4.0aH ultimate output battery which was known to have issues. They usually died right outside the warranty window which is what happened to all of mine. This 8.0 AH has only been around since 2022 or so and I've not heard of it having the same issues but as always, caveat emptor and register it as soon as you get it

jackbauer24

Apr 19, 2025

6,116 Posts

Joined Jun 2007

Apr 19, 2025

jackbauer24

Apr 19, 2025

6,116 Posts

I am tempted to grab the kobalt batteries and grab an adapter off Amazon and use it in my DeWalt fan and vacuum.

can a 24 v battery drop down current if I am using in a DeWalt 20 v fan and vacuum w/o frying the fan or the vacuum?

it is $8.07 per Ah, which is pretty good.

Last edited by jackbauer24 April 19, 2025 at 10:54 AM.

firebirdude

Expert

This user is an Expert in Home & Home Improvement

Apr 19, 2025

6,775 Posts

Joined Oct 2014

Apr 19, 2025

firebirdude

Expert

This user is an Expert in Home & Home Improvement

Apr 19, 2025

6,775 Posts

Quote from jackbauer24

can a 24 v battery drop down current if I am using in a DeWalt 20 v fan and vacuum w/o frying the fan or the vacuum?

The battery will deliver 24V to anything attached. But I'd do it anyway if I were you. lol

jackbauer24

Apr 19, 2025

6,116 Posts

Joined Jun 2007

Apr 19, 2025

jackbauer24

Apr 19, 2025

6,116 Posts

Quote from firebirdude

The battery will deliver 24V to anything attached. But I'd do it anyway if I were you. lol

There is a 3 d printed adapter off eBay for $32 plus shipping for using the kobalt battery on a DeWalt 20 v tools. That is 1/2 the price of the battery. So you're all in at $96 for the kobalt battery and the 3 d printed adapter.

sttlesks

Apr 19, 2025

310 Posts

Joined Apr 2014

Apr 19, 2025

sttlesks

Apr 19, 2025

310 Posts

Quote from jimboz28

Does this apply to current stock of 4.0ah UO batteries or particular year releases?

petedameat

Apr 19, 2025

16 Posts

Joined Mar 2009

Apr 19, 2025

petedameat

Apr 19, 2025

16 Posts

Buy once cry once...stick with Milwaukee. Their Forge m18 batteries seem pretty well built

firebirdude

Expert

This user is an Expert in Home & Home Improvement

Apr 19, 2025

6,775 Posts

Joined Oct 2014

Apr 19, 2025

firebirdude

Expert

This user is an Expert in Home & Home Improvement

Apr 19, 2025

6,775 Posts

Quote from jackbauer24

Adapting the connectors was never an issue. He asked about the difference in voltages specifically.

WildRigger47

Apr 19, 2025

1,474 Posts

Joined Aug 2008

Apr 19, 2025

WildRigger47

Apr 19, 2025

1,474 Posts

Quote from firebirdude

Adapting the connectors was never an issue. He asked about the difference in voltages specifically.

The original poster stated he planned on getting an adapter, which he obviously would need. Jackbauer24 reasonably focused on the price point of the total invested doing it that way.

adnoh

Apr 19, 2025

21 Posts

Joined Feb 2017

Apr 19, 2025

adnoh

Apr 19, 2025

21 Posts

What's the difference between these and the blue extended run time batteries that usually come with the tools?

jmmarsh2

Apr 20, 2025

307 Posts

Joined Nov 2011

Apr 20, 2025

jmmarsh2

Apr 20, 2025

307 Posts

Quote from adnoh

What's the difference between these and the blue extended run time batteries that usually come with the tools?

these use 21700 cells that can supply higher current (samsung 50T), the regular ones use 18650 cells in a 2P configuration.

NavyWallaby579

Apr 20, 2025

96 Posts

Joined Feb 2022

Apr 20, 2025

NavyWallaby579

Apr 20, 2025

96 Posts

Quote from adnoh

What's the difference between these and the blue extended run time batteries that usually come with the tools?

They have potential for a higher discharge rate which some but not all tools take advantage of. If you want to get the most torque out of tools like impact drivers/wrenches and circular saws use ultimate output. Ive mostly switched to Ridgid tools but im in for 2 because I absolutely love my aging Kobalt XTR impact driver and the sole 4ah ult output battery I've got for it is starting to not hold a charge like it used to. This is a crazy low price for an 8ah battery running 12x 21700 cells.

KoprivaMedia

Apr 20, 2025

86 Posts

Joined Nov 2012

Apr 20, 2025

KoprivaMedia

Apr 20, 2025

86 Posts

Quote from cantcurecancer

Look at the reviews. Hidden beyond the fake aggregate and AI summary is a sea of reviews talking about how these things die after a few uses.

The 4.0 High Outputs are atrocious. I've had seven of them fail. The 8.0s are okay. Of the three I've had, only one has failed.

Keep your receipts. I did and it made warranty swaps easy enough.

Unregistered (You)

Free Shipping Home & Home Improvement Tools Drills & Power Tools Kobalt Lowe's

Product Description:	KOBALT 24-Volt Max Ultimate Output Battery. The Ultimate Output lithium ion battery utilizes cutting edge technology for high energy 24-volt power tools, like KOBALT XTR tools. The power Indicator display allows immediate feedback on charge status. While internal technology protects the battery pack from extreme temperatures. Compatible with the entire line of KOBALT 24V Max tools and includes a 3-year limited warranty. Kobalt Ultimate Output 24 -V 1 -Pack Lithium-ion Battery 8 Ah and \| KXB 824-03
Product SKU:	5001874651_5001874651
UPC:	692042013805

Kobalt 24V Ultimate Output 8Ah Lithium-ion Power Tool Battery

$59

$139

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