Name: BLACK+DECKER BM3B Battery Maintainer/Trickle Charger
Brand: BLACK+DECKER
SKU: 6WZPE49Z1BWL
Price: 47.98 CAD
Availability: InStock
Rating: 4.3 (550 reviews)

Walmart US Ecommerce Website

GENERAL MERCHANDISE

PHARMACY

GROCERIES

VUDU

SPARK

PHOTO

ADVERTISING

SAVINGS CATCHER

GIFTCARDS

INHOME

AFFILIATE

ONEAPP

LOTUS

HELP

SMART_REORDER

GROCERY

CONV_COMMERCE

Buy Box Ad Container Module for Desktop

Custom HTML Module - About Klarna

Custom HTML Module - About SalesFinancing - Second update

You'll choose a plan at checkout.

#515357

I want delivery savings with Delivery Pass

#0071dc

NEW Fulfillment Tue Apr 15 2025 2:17 PM EDT

MTZ Team | Marquee 1 Ad | Item Page

MTZ Team | Marquee 2  Ad | Item Page

MTZ Team | Skyline Ad | Item Page

Other products of interest

MTZ Team | Sponsored Product Carousel - Item Page

More items to explore

MTZ Team | Sponsored Product Carousel - Item Page Broad 

NEW AddonServicesRedesign Fri Jul 18 2025 1:30 PM EDT

NEW AddToCart Mon Jul 14 2025 3:50 PM EDT

NEW AddToCart Tue Apr 15 2025 2:19 PM EDT

NEW BrandBoxDisplayAd Mon Jul 14 2025 9:14 PM EDT

NEW BrandLink Wed Apr 23 2025 12:07 AM EDT

NEW Breadcrumb Mon Apr 07 2025 8:23 PM EDT

Walmart Rewards Mastercard

NEW FinancingOptions Tue Dec 10 2024 3:32 PM EST

I want shipping & delivery savings with

NEW Fulfillment Mon Jul 14 2025 4:00 PM EDT

New Item Page - Nutrition Value Placeholder Module, Wednesday, February 08, 2023, 5:11:53:90 pm

New Item Page - Product Description Placeholder Module, Wednesday, February 08, 2023, 5:14:04:38 pm

New Item Page - Product Ingredients Placeholder Module, Friday, February 10, 2023, 10:34:23:79 am

New Item Page - Product Specifications Placeholder Module, Wednesday, February 08, 2023, 5:15:29:61 pm

New Item Page - Reviews Placeholder Module, Wednesday, March 22, 2023, 10:04:29:34 am

New Item Related Shelves Module, Thursday, June 15, 2023, 6:08:51:10 am

 Price Match Policy

Prices, terms, and availability may vary online, in stores, and in–app. If the advertised price is not shown here, inventory at the advertised price may now be sold out. Please see the other offers, if available, while quantities last. Some items may be available from Marketplace Sellers, who set their own prices, and are not eligible for price match. Items sold in store by Walmart may be eligible for a price match to online items shipped and sold by Walmart. For variable weight items, price shown is an estimated price only – you will be charged for the actual weight of the item. See our

NEW LegalPriceDisclaimer Mon Jul 14 2025 4:11 PM EDT

NEW LegalPriceDisclaimer Wed Apr 30 2025 12:13 AM EDT

NEW ListsAndRegistries Tue Apr 15 2025 4:50 PM EDT

NEW PaymentPlans Mon Jul 14 2025 4:15 PM EDT

NEW PaymentPlans Tue Apr 15 2025 1:31 PM EDT

NEW PriceInformation Tue Apr 15 2025 1:30 PM EDT

NEW ProductDescriptionPlaceholderATF Tue Jul 08 2025 11:41 PM EDT

NEW ProductFlags Thu Apr 10 2025 11:42 PM EDT

NEW ProductHighlightsPlaceholder Wed Jul 02 2025 12:43 AM EDT

NEW ProductImages Tue Apr 15 2025 2:13 PM EDT

NEW ProductName Tue Apr 15 2025 12:53 PM EDT

NEW ProductReturnPolicyDetails Tue Dec 10 2024 3:17 PM EST

NEW ProductReturnPolicy Mon Jul 14 2025 5:04 PM EDT

Return Policy

NEW ProductReturnPolicy Tue Apr 15 2025 2:28 PM EDT

NEW ProductStickyBuyBox Wed Jul 02 2025 12:55 AM EDT

NEW PromoDiscount Tue Apr 15 2025 6:53 PM EDT

New SellersSecondaryBuyBox Module, Tuesday, September 05, 2023, 4:02:21:76 pm

NEW ShopWithConfidence Thu Jan 15 2026 2:20 PM EST

NEW SocialProofMessage Tue Apr 15 2025 7:17 PM EDT

NEW SoldAndShippedBy Mon Jul 14 2025 5:04 PM EDT

NEW SoldAndShippedBy Tue Apr 15 2025 2:23 PM EDT

New!

More savings, less stress.

HSK_Subscribetosave_E_v2

NEW SubscriptionOptionsModule Tue Apr 15 2025 6:44 PM EDT

NEW SubscriptionPriceMessage Wed Apr 23 2025 6:48 PM EDT

NEW Variants Wed Apr 23 2025 11:01 PM EDT

[Sticky] BuyBoxAd Mon Aug 11 2025 3:59 AM EDT

[Sticky] PriceInformation Mon Jul 14 2025 4:03 PM EDT

Syndigo

True

dWeb: L1/L2- Comparison Chart- WK 07, 2026

#000000

Item Carousel - Rich Relevance 1

RR carousel

Item Carousel - Rich Relevance 2

RR carousel 2

Item Carousel - Rich Relevance 3

BLACK+DECKER BM3B Battery Maintainer/Trickle Charger

<ul><li>Versatile Battery Charging: Charges and maintains 12 volt and 6 volt AGM, GEL, and WET batteries.</li><li>Automated Charging Control: Stops charging automatically when the battery is fully charged or topped off, switching to float mode monitoring.</li><li>Integrated Circuit Protection: Guards against overcharging, reverse polarity, or short circuit.</li><li>Flexible Connection Options: Connects to the vehicle battery using battery clips and O-ring terminals.</li><li>Convenient Mounting: Includes a built-in mounting bracket for placement.</li></ul>

<ul><li>Charges and maintains 12 volt and 6 volt AGM, GEL and WET batteries</li><li>Easy connection to vehicle battery using battery clips and O-ring terminals</li><li>Stops charging automatically when battery is fully charged or topped off, switching to float mode monitoring</li><li>Built-in circuit protection guards against overcharging, reverse polarity, or short circuit; ETL certified for performance and safety</li><li>Mounting bracket built-in to charger for convenient placement</li></ul>

Compatible Brands

Power Type

Electronics Feature

Brand

Assembled Product Dimensions (L x W x H)

&bull<li>Works with 6V & 12V battery systems<li>&bull<li>Fully automatic high-frequency charging<li>&bull<li>Reverse-polarity protection<li>&bull<li>Circuit protection against overcharging or short circuit<li>&bull<li>Connects to battery via clips, 12V plug & battery ring terminals<li>&bull<li>Includes built-in mounting brackets & AC plug<li>Battery Maintainer/Trickle Charger

Universal Product Code (UPC check)

fulfillment

title_shipToHome_date_free_delivery

Offers various connection types, but reliability can be inconsistent.

Device has a sturdy and well-crafted build.

Can be fast, but may be slow for deeply discharged batteries.

Can be bright and informative, but also dim and hard to see.

Offers budget-friendly battery maintenance solution.

I used it under the hood with just the alligator clamps. It maintained the charge just fine. I bought 2 of these because I have two batteries to maintain like the riding tractor that sits idle over the winter. You can use the cigarette lighter in cars and even connect it directly to the battery terminal without the alligator clamps. It certainly beats the other higher price units.

Inexpensive with options and it works

walmart.com

Just had it a few days. Easy to set up. Keeping the battery at its maximum voltage. My battery drained during the Coronavirus quarantine. It was at 2.5 volts (12 volt car battery) The trickle charger manual said it won't at less than 2 Volts. It didn't charge mine at 2.5 volts. So I got a jump and let it idle for an hour and got the voltage up to 12 volts, put on the trickle charger and it started working just fine. It was at max charge the next day.

Easy to setup.

I like the many attachments which make it easy to attach to my generator battery as a way to insure quick starts.  Idiot lights show if battery is fully charged or is charging, or if battery is bad or connection is wrong.  Good product.  My Champion generator battery can only take 1.5 amps so this is pefect.

Charger works

For the price this unit delivers. Both in 6 volts and 12 volts. It comes with multiple battery attachments which most of the other units out there do not. I used the permanent attachment on my garaged vehicle which rarely sees the road, and then I have the other two attachments remaining which I can use to 'spot' charge my other vehicle/lawn mower/generator batteries to keep them topped up and in their prime. I purchased this B&D Battery Maintainer due to a dead battery found on my garaged vehicle from less than 2 years new!!! The result of not much vehicle road use and a slow discharge brought the battery down so low it could not recover. Now I can spot charge it and keep it in prime condition and avoid another $120 plus battery purchase. I also have the advantage of using it with the other supplied attachments on my lawn mower, portable generator and other vehicles batteries. A great value.

Dual Charge Capability and Mulitple Attachments

There are battery maintainers that go for around $100 or more. So I was skeptical about this one only being $20, but gave it a shot anyway. First thing I notice is the plug accessories which are very cool. The device is simple to use and the most important thing is that it works. Hooked it up to my old jeep (battery was dead) it took about 2 weeks but charged the battery and keeps it charged. So I hooked one up to my boat battery and it was fully charged in 2 days. Will probably get a 3rd for my atv. These things are great and cheap.

Great product

I've had the Black and Decker Battery Maintainer running for about a week now and I am, so far, very satisfied with the product. I use three other versions of maintainers, all of which work but are considerably more expensive, to maintain the batteries on my ATV's, motorcycle, boat and RV and so far this maintainer works as well as the others. It offers three connection modes, battery terminal clamps, cigarette lighter plug and hard wire directly to the terminals. I prefer to hard wire directly to the terminals and the quick connect plug makes it a lot easier to disconnect when I am ready to play and reconnect when I'm done. Just remember this is not a battery charger! It will keep a fully charged battery functional and up to capacity but will probably not recharge a low or dead battery.

So far so good.

This is a very nice trickle charger.  This is third one that I have purchased.  I use them on my Wave Runners and Motorcycle to keep the battery in good shape.  Before I had these trickle chargers I used to have to replace my Wave runner batteries every season but now they last several years.  I would recommend this trickle charger to anyone that is tired of replacing batteries prematurely

Black & Decker Battery Maintainer

I really like this.  It's easy to use, and connects with ease.  Indicator lights show whether it's accepting a charge or not, so it's easy to know if you didn't connect it properly.  Two modes, 6V and 12V, make for limiting the current easy too.  It was worth the money.

Just good product here-- nothing else to say

There is one green led that blinks on and off to indicate the battery is being charged. The same green led stays on solid when the battery is fully charged.  It trickles charges at 1.2A. I was charging a battery which had a good charge already. I wanted to bring in to a full charge.  I charged it for 8 hours and this charger never indicated a full charge -- a solid green led.  I am not sure if I would leave this trickle charger on all of the time.  it may overcharge the battery.  The charger that I recieved looked like a return. I am keeping it but I am going to watch it closely.

Okay as a 1.2 AMP Trickle Charger

It was pictured with a connection for a cigarette lighter and did not come with that.  The company's solution was to have me return the whole thing and suggest that the picture be taken down

Not all included

Had this for a short period of time... The bottom of the case is already melting from the extreme heat inside. This could be a fire hazard... Will return

Don't buy this unit could start a fire!!!

BLACK+DECKER BM3B Battery Maintainer/Trickle Charger

More seller options (2)

Your data, your choice