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expiredRokket | Staff posted Jul 31, 2021 05:55 PM
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expiredRokket | Staff posted Jul 31, 2021 05:55 PM

Black+Decker 6V and 12V Battery Charger/Maintainer

$10

$25

60% off
Walmart
55 Comments 40,454 Views
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Deal Details
Walmart has Black+Decker 6V and 12V Battery Charger/Maintainer (BM3B) on sale for $11.24 -> Now $10.22. Shipping is free with Walmart+ (free 15-day trial) or on orders of $35 or more.

Thanks to Deal Hunter Rokket for finding this deal.

Features:
  • 3 Ways to Connect: Battery clips, 12V DC Accessory Plug & Battery Ring Terminal
  • Reverse polarity protection
  • AC Low voltage compensation ensures maximum performance when used with an extension cord

Editor's Notes

Written by oceanlake
  • About this deal:
    • Our research indicates that this Black+Decker 6V and 12V Battery Charger/Maintainer is $8.20 lower (42% savings) than the next best available price from a reputable merchant with prices starting at $19.44 at the time of this posting.
  • About this product:
    • This battery charger has received an average rating of 4.3 stars out of 5 based on over 500 Walmart customer reviews.
  • About this store:
    • Most items sold & shipped by Walmart.com can be returned for free, either to a store or by mail up to 90 Days after item is delivered. See the Walmart returns page for returns information.

Original Post

Written by Rokket | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Walmart has Black+Decker 6V and 12V Battery Charger/Maintainer (BM3B) on sale for $11.24 -> Now $10.22. Shipping is free with Walmart+ (free 15-day trial) or on orders of $35 or more.

Thanks to Deal Hunter Rokket for finding this deal.

Features:
  • 3 Ways to Connect: Battery clips, 12V DC Accessory Plug & Battery Ring Terminal
  • Reverse polarity protection
  • AC Low voltage compensation ensures maximum performance when used with an extension cord

Editor's Notes

Written by oceanlake
  • About this deal:
    • Our research indicates that this Black+Decker 6V and 12V Battery Charger/Maintainer is $8.20 lower (42% savings) than the next best available price from a reputable merchant with prices starting at $19.44 at the time of this posting.
  • About this product:
    • This battery charger has received an average rating of 4.3 stars out of 5 based on over 500 Walmart customer reviews.
  • About this store:
    • Most items sold & shipped by Walmart.com can be returned for free, either to a store or by mail up to 90 Days after item is delivered. See the Walmart returns page for returns information.

Original Post

Written by Rokket | Staff

Community Voting

Deal Score
+56
Good Deal
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Price Intelligence

Model: BLACK + DECKER Vehicle Battery Maintainer and T rickle Charger

Deal History 

Sale Price
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Current Prices

Sort: Lowest to Highest | Last Updated 9/13/2025, 03:11 AM
Sold By Sale Price
Amazon$23.56

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Top Comments

LotusCloudLex
6763 Posts
703 Reputation
I own two of these. The newer one I got is built a little different and is glitchy vs my older one. I wouldn't buy this again. Go with quality NOCO. I also have other brand of chargers. Battery tender (the bigger one), Aukey, and craftsman?) They are all glitchy. A couple has overcharged my car battery. The old black and decker one is still solid. But the best is NOCO hands down, one of the best!
LotusCloudLex
6763 Posts
703 Reputation
I love how people give thumbs down for honest feedback. Just because it's not a raving review lol

My 2 cents, take it or leave it. Just contributing to SD, or I could not post.
MrSkeptic
14486 Posts
3756 Reputation
No free ship to store kills it.

54 Comments

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Jul 31, 2021 11:35 PM
3,549 Posts
Joined Mar 2013
dealmashugunaJul 31, 2021 11:35 PM
3,549 Posts
If quality is important CTEK makes some of the best...
Pro
Aug 01, 2021 12:05 AM
12,717 Posts
Joined Oct 2007
arribasn
Pro
Aug 01, 2021 12:05 AM
12,717 Posts
Quote from SweetBearCub :
I'm not sure if this deal includes the spring loaded clips that grab onto the terminals of a 12V gel battery. Can anyone please confirm?
Per description " . It comes with two different connector sets, including battery clips and battery terminal rings. "
Aug 01, 2021 12:36 AM
193 Posts
Joined Mar 2007
SweetBearCubAug 01, 2021 12:36 AM
193 Posts
Quote from arribasn :
Per description " . It comes with two different connector sets, including battery clips and battery terminal rings. "
Thanks, missed the bit about the clips, was focused on the lugs.
Aug 01, 2021 12:42 AM
6,763 Posts
Joined Oct 2009
SammieSocal25Aug 01, 2021 12:42 AM
6,763 Posts
Quote from BlueTangClam :
Which noco do you have? I have the g3500 one and it's super slow. When I measured the current, it was only about 700mA.
I have the 10 amp version. Charges pretty darn quick!

NOCO GENIUS10, 10-Amp Fully-Automatic Smart Charger, 6V and 12V Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Temperature Compensation https://www.amazon.com/dp/B07W3QT...UTF8&psc=1
Aug 01, 2021 12:43 AM
228 Posts
Joined Feb 2008
out4yaAug 01, 2021 12:43 AM
228 Posts
Will this work on a dying car battery?
Aug 01, 2021 12:54 AM
2,773 Posts
Joined Jun 2009
g725sAug 01, 2021 12:54 AM
2,773 Posts
Quote from out4ya :
Will this work on a dying car battery?
This is basically just a trickle charger. So no.
Aug 01, 2021 12:57 AM
41 Posts
Joined Dec 2015
KamateAug 01, 2021 12:57 AM
41 Posts
Quote from out4ya :
Will this work on a dying car battery?
It will not work if your battery is complete drain. I think most trickle/slow charger requires a min of 2v from your battery to start charging. You can always connect the dead one to a good one just so the charger can get started and disconnect from the good battery once it starts charging. This particular charger would take like 3 days to fully charge an empty battery to full.

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Aug 01, 2021 01:04 AM
15,688 Posts
Joined Nov 2010
80isAug 01, 2021 01:04 AM
15,688 Posts
Have been using the HF $5 one for many years
2
Aug 01, 2021 01:05 AM
15,688 Posts
Joined Nov 2010
80isAug 01, 2021 01:05 AM
15,688 Posts
Quote from out4ya :
Will this work on a dying car battery?
if the battery is good, but low . . . yes, it will work, but it will take it several days
Aug 01, 2021 01:47 AM
14 Posts
Joined Oct 2018
FeistyStar7177Aug 01, 2021 01:47 AM
14 Posts
Quote from anvilsvs :
Ordered 6
Seems good deal. ?
Aug 01, 2021 02:11 AM
5,699 Posts
Joined Feb 2008
FearAndLoathingAug 01, 2021 02:11 AM
5,699 Posts
Quote from LotusCloudLex :
I love how people give thumbs down for honest feedback. Just because it's not a raving review lol

My 2 cents, take it or leave it. Just contributing to SD, or I could not post.
If there is an early comment that speaks negatively about the product or could affect the sales (commissions), you'll often find a magical number of negative votes to try and kill it before it can hurt sales.

Think long and hard, have you ever seen a staff member say anything negative about posted products?
1
Aug 01, 2021 02:13 AM
6,763 Posts
Joined Oct 2009
SammieSocal25Aug 01, 2021 02:13 AM
6,763 Posts
Quote from FearAndLoathing :
If there is an early comment that speaks negatively about the product or could affect the sales (commissions), you'll often find a magical number of negative votes to try and kill it before it can hurt sales.

Think long and hard, have you ever seen a staff member say anything negative about posted products?
I often think the same actually, but didn't say it. I see this happen all the time on SD. I also get warnings and such lol
1
Aug 01, 2021 02:18 AM
5,699 Posts
Joined Feb 2008
FearAndLoathingAug 01, 2021 02:18 AM
5,699 Posts
Quote from LotusCloudLex :
I often think the same actually, but didn't say it. I see this happen all the time on SD. I also get warnings and such lol
It's too bad, this used to be a great place for information and discussion, but now it's all promotional feedback with fake accounts and comments.
1
Aug 01, 2021 02:20 AM
6,763 Posts
Joined Oct 2009
SammieSocal25Aug 01, 2021 02:20 AM
6,763 Posts
Quote from FearAndLoathing :
It's too bad, this used to be a great place for information and discussion, but now it's all promotional feedback with fake accounts and comments.
I couldn't agree more!
1

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Aug 01, 2021 04:23 AM
330 Posts
Joined Jun 2016
Cricket247Aug 01, 2021 04:23 AM
330 Posts
Quote from SweetBearCub :
I'm not sure if this deal includes the spring loaded clips that grab onto the terminals of a 12V gel battery. Can anyone please confirm?
I have this and it came with the alligator clips that can be attached to the battery terminals.

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