Black & Decker Battery Maintainer

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  • For use on 6V and 12V battery systems
  • Easy connection to vehicle battery using the included battery clips
  • Customers also considered

    About this item

    Important Made in USA Origin Disclaimer: For certain items sold by Walmart on Walmart.com, the displayed country of origin information may not be accurate or consistent with manufacturer information. For updated, accurate country of origin data, it is recommended that you rely on product packaging or manufacturer information.
    The Black & Decker Battery Maintainer is ideal for use with both 6V and 12V battery systems. You can use it to charge the batteries of RVs, motorcycles, lawn mowers, ATVs, boats or jet skis, classic cars and many other vehicles. You can keep all of your battery-operated vehicles running with the two voltages. The auto battery maintainer offers easy connection to the battery with the included clips. It also includes a DC accessory plug and battery ring terminals. This car battery maintainer features smart charging technology to keep batteries at the optimal charge. It stops when the battery is fully charged. The built-in circuit protection on the auto battery maintainer prevents overcharging or reverse polarity. Your battery is also safe from short circuiting. A built-in mounting bracket allows you to place it in the most convenient location. The car battery maintainer switches from charging mode to float mode monitoring. This Black & Decker Battery Maintainer is fully auto

    About this item

    Important Made in USA Origin Disclaimer: For certain items sold by Walmart on Walmart.com, the displayed country of origin information may not be accurate or consistent with manufacturer information. For updated, accurate country of origin data, it is recommended that you rely on product packaging or manufacturer information.

    The Black & Decker Battery Maintainer is ideal for use with both 6V and 12V battery systems. You can use it to charge the batteries of RVs, motorcycles, lawn mowers, ATVs, boats or jet skis, classic cars and many other vehicles. You can keep all of your battery-operated vehicles running with the two voltages. The auto battery maintainer offers easy connection to the battery with the included clips. It also includes a DC accessory plug and battery ring terminals. This car battery maintainer features smart charging technology to keep batteries at the optimal charge. It stops when the battery is fully charged. The built-in circuit protection on the auto battery maintainer prevents overcharging or reverse polarity. Your battery is also safe from short circuiting. A built-in mounting bracket allows you to place it in the most convenient location. The car battery maintainer switches from charging mode to float mode monitoring. This Black & Decker Battery Maintainer is fully auto


    Black & Decker Battery Maintainer:

    • For use on 6V and 12V battery systems
    • Easy connection to vehicle battery using the included battery clips
    • O-ring terminals or vehicle DC plug
    • High-frequency smart charging technology keeps batteries at optimal charge
    • Automatically switches between charging mode and float mode monitoring
    • Built-in mounting bracket

    Specifications

    Amps: 1 Amps
    Color: Multicolor
    Model: BM3B
    Brand: Black & Decker
    Volts: 120 V
    Video Game Platform: PC
    Vehicle Type: BGLBM3B
    Condition: New
    Size: 3X9.5x5.1
    Material: Multi
    Manufacturer Part Number: BM3B
    Features: Includes battery clamps & ring terminals
    Assembled Product Dimensions (L x W x H): 8.00 x 3.00 x 2.00 Inches
    Show

    Customer Reviews

    Customer Reviews | 150 reviews | 4.5 out of 5

    4.5 stars

    150 reviews | 4.5 out of 5

    4.5 stars

    150 reviews | 4.5 out of 5

    93%
    Would recommend to a friend
    5 stars
    115
    4 stars
    23
    3 stars
    1
    2 stars
    1
    1 stars
    10
    1-5 of 147 total reviews
    93%
    Would recommend to a friend

    Age

    Gender

    Works great and it is idiot proof
    7/12/2015

    Customer review by Grandma

    5.0 stars 7/12/2015 by Grandma
    by Grandma

    I only drive my car a few times a month and then only a few miles so the battery tends to get low. I purchased this to top off the charge periodically instead of having to replace the battery every 9 months to a year. It was easy to hook up with the mini clamps which are familiar to me. I purchased a heavy duty extension cord because I wasn't sure the cord that is attached would be long enough, but the cord is longer than I expected and I didn't need the extension cord after all. The car was cranking pretty hard so the charge must have been pretty low as it took two days to fully charge. That was several weeks ago, and it has been starting fine ever since. The indicator lights are a godsend for non-mechanical people like me, red for not fully charged and green when done. It also has an indicator if the clamps are hooked up wrong. Idiot proof. I am thoroughly pleased with this purchase.

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    Grandma
    Would recommend to a friend? Yes
    Black & Decker Battery Maintainer
    7/19/2016

    Customer review by Dave

    5.0 stars 7/19/2016 by Dave
    by Dave
    Verified purchaser
    Verified purchaser
    Customer has been confirmed to have purchased the item from Walmart.

    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

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    Dave
    Would recommend to a friend? Yes
    Verified purchaser
    Verified purchaser
    Customer has been confirmed to have purchased the item from Walmart.
    Dual Charge Capability and Mulitple Attachments
    9/5/2013

    Customer review by An anonymous customer

    5.0 stars 9/5/2013 by An anonymous customer
    by An anonymous customer
    Verified purchaser
    Verified purchaser
    Customer has been confirmed to have purchased the item from Walmart.

    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.

    Was this review helpful? (112) (27)
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    An anonymous customer
    Richmond, VA
    Would recommend to a friend? Yes
    Age:55 - 64
    Ownership:1 week or less
    Gender:Male
    Usage:Once per week
    Verified purchaser
    Verified purchaser
    Customer has been confirmed to have purchased the item from Walmart.
    **Aa does the job! less expensive. 6 or 12v.
    9/12/2016

    Customer review by Chihauhua

    5.0 stars 9/12/2016 by Chihauhua
    by Chihauhua
    Verified purchaser
    Verified purchaser
    Customer has been confirmed to have purchased the item from Walmart.

    Using on my travel trailer battery 9months out of the yesr. does the job! less expensive than other similar trickle chargers. 6 or 12v. Cheaper than buying new battery every year.

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    Chihauhua
    Would recommend to a friend? Yes
    Verified purchaser
    Verified purchaser
    Customer has been confirmed to have purchased the item from Walmart.
    Maintainer
    9/13/2016

    Customer review by clearstream

    5.0 stars 9/13/2016 by clearstream
    by clearstream
    Verified purchaser
    Verified purchaser
    Customer has been confirmed to have purchased the item from Walmart.

    Works well does the job .

    Was this review helpful? (0) (0)
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    clearstream
    Would recommend to a friend? Yes
    Verified purchaser
    Verified purchaser
    Customer has been confirmed to have purchased the item from Walmart.
    1-5 of 147 total reviews See all
    1-5 of 147 reviews

    Customer Reviews | 150 reviews | 4.5 out of 5

    Customer Reviews

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    Customer Q&A

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    Questions & Answers 44 questions
    1-3 of 44 questions

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    Back
    Chicago has frigid temperatures with the windchill factor at 35 degress below zero.
    by WMW 1/7/2014
    6 answers
    • A. As long as the cells in the battery are all good, this charger will charge and maintain the battery when not in use.
      by Deev8ed6/17/2015
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    • A. No. It is a battery maintainer. I had dead JetSki batteries and used a Schumacher battery charger to recharge them, and now keep them on the B&D battery maintainer. The good news is that a fully charged battery resists freezing much better.
      by Scotsman1117/10/2016
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    • A. It would charge it over a period of time (say 24 hours). It's not a quick, boost charger, so don't expect to start a nearly dead battery in only 5 minutes on this charger. It doesn't have that amount of capacitance.
      by ThunderStroke1117/10/2016
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    • A. Well it could but it will take a very long time to charge it!
      by lostsole8/4/2015
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    • A. Yes,but it would take awhile to charge it.
      by waterguy397/10/2016
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    • A. The battery being charged with the BM3B Battery Maintainer/Trickle Charger does need between 2 and 4 volts to charge. The basic guideline for extreme cold weather is if the battery can freeze it should not be charged. It is recommended to call the manufacturer of the battery for specific freeze point information.
      by Black&Decker2/26/2016
      Written by a verified representative from Black&Decker
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    Back
    Its winter here i NJ and I dont take car oujt for like 3 to 4 days So need a charge trickle charge and not over charge battery, yet keep it full for easy starts vs dead batt. my car big V 8 4.1 litter engine. and this is nice small to lower car hood since its outsifr w/ cover over it. run extension ccord to this should be fine. Last is wire safe from rain snow though extension cord will be more expsed to wetness then the unit, that should be able keep it an all wires under hood. What amps does this unit put out ?
    by Rocket11213 1/3/2014
    6 answers
    • A. This unit is designed for use above freezing and below 40 degrees Celsius, (104 Fahrenheit). Do not charge the battery when the engine is running.
      by Shawpurr7/15/2015
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    • A. Yes
      by Mungo5444/14/2015
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    • A. The unit will work well for your needs. Connectors are weatherproof. Can't tell you about amps, just that it will keep a car battery fully charged.
      by Scotsman1115/23/2016
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    • A. YES
      by lostsole4/14/2015
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    • A. This will keep your battery fully charged at any temperature as it trickles about 1 amp when your battery is fully charged. This does not heat up the battery, as the output is so low. I use one year around as My car sits for days at a time, and other than remembering to remove it when I do drive, makes battery operation simple and effective.
      by Elemental5/23/2016
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    • A. Yes, I have my charger hooked up to a 12v tractor battery. Its 4 degrees today and -10 a few times last week. Its fully charged. Eastern Iowa In January.
      by MrFourWhellDrive2/22/2016
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    1-3 of 44 questions See all
    1-3 of 44 questions
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