Kobalt 24V 8Ah Ultimate Output Lithium-Ion Battery (KXB) $79.00 + Free Store Pickup at Lowes

Post Date	Sold By	Sale Price	Activity
09/14/25	Lowe's	$79	4
04/18/25	Lowe's	$59 Frontpage	17

FeistyPocket1682

Aug 5, 2026 10:03 PM

34 Comments

Joined Nov 2020

FeistyPocket1682Aug 5, 2026 10:03 PM

34 Comments

This by store location and I was able to grab one. Thx op

Dr_Derogatory

Aug 5, 2026 10:44 PM

719 Comments

Joined May 2015

Dr_DerogatoryAug 5, 2026 10:44 PM

719 Comments

IIRC the last time this deal came up there were a number of people that had issues with this battery. I think perhaps it had stopped charging after only a few uses but also that it had reduced battery capacity very quickly as well.

I personally have a 4ah Ultimate Output and I wouldn't buy another. It's the only battery from Kobalt that I have that has overheated on me. All of the Extended Run blue batteries I have (which is a lot) have never failed me once. My experience with the 4ah battery and the first hand reviews I read last time were enough to prevent me from jumping on this deal.

3

firebirdude

Expert

This user is an Expert in Home & Home Improvement

Aug 6, 2026 1:41 AM

7.7K Comments

Joined Oct 2014

firebirdude

Expert

This user is an Expert in Home & Home Improvement

Aug 6, 2026 1:41 AM

7.7K Comments

Who else got the 24V battery recall in the mail?😄🙋

FeistyPocket1682

Aug 6, 2026 5:14 AM

34 Comments

Joined Nov 2020

FeistyPocket1682Aug 6, 2026 5:14 AM

34 Comments

Quote from Dr_Derogatory

:

IIRC the last time this deal came up there were a number of people that had issues with this battery. I think perhaps it had stopped charging after only a few uses but also that it had reduced battery capacity very quickly as well. I personally have a 4ah Ultimate Output and I wouldn't buy another. It's the only battery from Kobalt that I have that has overheated on me. All of the Extended Run blue batteries I have (which is a lot) have never failed me once. My experience with the 4ah battery and the first hand reviews I read last time were enough to prevent me from jumping on this deal.

Yeah... I just pick mine up today and the battery was fully drained. I charged and it stuck at 3bars and it would not charge anymore, bummer it was at a good price and was hoping to use it on my mower... Guess I have to return it now

NoahS14

Aug 6, 2026 7:13 PM

13 Comments

Joined Aug 2019

NoahS14Aug 6, 2026 7:13 PM

13 Comments

Quote from FeistyPocket1682

:

Yeah... I just pick mine up today and the battery was fully drained. I charged and it stuck at 3bars and it would not charge anymore, bummer it was at a good price and was hoping to use it on my mower... Guess I have to return it now

Just warranty the battery. They should get you a new one if you still want one

redcodefsu

Aug 7, 2026 3:16 PM

514 Comments

Joined Mar 2007

redcodefsuAug 7, 2026 3:16 PM

514 Comments

I wish I could order this regular delivery and not same-day. I'd like to get two for my mower and miter saw. Says unavailable for me.

hhgf35c

Aug 7, 2026 6:36 PM

129 Comments

Joined Jun 2017

hhgf35cAug 7, 2026 6:36 PM

129 Comments

Can you use this on older Kobalt chargers/impact wrenchs?

ccbowers

Aug 7, 2026 7:29 PM

184 Comments

Joined Sep 2014

ccbowersAug 7, 2026 7:29 PM

184 Comments

Quote from Dr_Derogatory

:

IIRC the last time this deal came up there were a number of people that had issues with this battery. I think perhaps it had stopped charging after only a few uses but also that it had reduced battery capacity very quickly as well.

I personally have a 4ah Ultimate Output and I wouldn't buy another. It's the only battery from Kobalt that I have that has overheated on me. All of the Extended Run blue batteries I have (which is a lot) have never failed me once. My experience with the 4ah battery and the first hand reviews I read last time were enough to prevent me from jumping on this deal.

The Kobalt 4Ah UO battery is the only power tool batter I can think of that seems to perform worse than its standard 4Ah counterpart. It uses fewer cells, so it is more compact, but those cells are 21700. The standard 4Ah has 18650 cells, but double the number of cells in parallel, so it actually performs slightly better.

I have the 8Ah UO and have had no issue with it and would buy it again (limited use over 4 years). But there are none in the Lowes near me, and I'm not driving 30min for this - I don't really need it that badly

jinnbaba48

Aug 11, 2026 6:22 PM

601 Comments

Joined Feb 2011

jinnbaba48Aug 11, 2026 6:22 PM

601 Comments

I bought one last week but after some research, this is the old battery 824-03. Anything with -03 is the older batteries, ultimate output OR extended run.
The new batteries which i cant remember have ever been shelved separately from the 48v line are the x24-06, -06 being the iteration, x being the amperage.
I have 2x 824-06 from the dual blade 48v mower as well as 2x 324-06 w the 48v trimmer.

I'm going to return this unopened 824-03 and wait for the -06 or whatever iteration without the usbc ports they will ship and stock, hopefully soon.
I'm wondering if theyll launch with the revamp of the 24v hand tool line anticipated to come soon.
Kobalt needs to work on their marketing and press releases.

1

210kang

Aug 12, 2026 1:52 PM

19 Comments

Joined Nov 2019

210kangAug 12, 2026 1:52 PM

19 Comments

Quote from FeistyPocket1682

:

Yeah... I just pick mine up today and the battery was fully drained. I charged and it stuck at 3bars and it would not charge anymore, bummer it was at a good price and was hoping to use it on my mower... Guess I have to return it now

Your mower must be old because 24v line is hard to find. The 80v line is night and day with the 24v.

210kang

Aug 12, 2026 1:57 PM

19 Comments

Joined Nov 2019

210kangAug 12, 2026 1:57 PM

19 Comments

Quote from jinnbaba48

:

I bought one last week but after some research, this is the old battery 824-03. Anything with -03 is the older batteries, ultimate output OR extended run. The new batteries which i cant remember have ever been shelved separately from the 48v line are the x24-06, -06 being the iteration, x being the amperage. I have 2x 824-06 from the dual blade 48v mower as well as 2x 324-06 w the 48v trimmer. I'm going to return this unopened 824-03 and wait for the -06 or whatever iteration without the usbc ports they will ship and stock, hopefully soon. I'm wondering if theyll launch with the revamp of the 24v hand tool line anticipated to come soon. Kobalt needs to work on their marketing and press releases.

I have majority 24v line, but purchased a 80v blower a few months ago. I'll never go back😆. Yes their marketing is horrible.

kenkobra63

Aug 13, 2026 3:35 AM

2.4K Comments

Joined Nov 2009

kenkobra63Aug 13, 2026 3:35 AM

2.4K Comments

Just picked mine up and it was 100 percent dead and would not charge.

kenkobra63

Aug 13, 2026 7:17 PM

2.4K Comments

Joined Nov 2009

kenkobra63Aug 13, 2026 7:17 PM

2.4K Comments

Quote from kenkobra63

:

Just picked mine up and it was 100 percent dead and would not charge.

The date code on my battery is 0921. I'll be doing an RMA, as all the batteries at my Lowe's have the same date code.

Kobalt 24V 8Ah Ultimate Output Lithium-Ion Battery (KXB) $79.00 + Free Store Pickup at Lowes

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