BLACK & DECKER 120-Volt Battery Maintainer-BM3B at The Home Depot
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Model # BM3B

120-Volt Battery Maintainer

BLACK &  DECKER 120-Volt Battery Maintainer

This item has been discontinued.
The Home Depot no longer carries this specific product.

$19.97 / each
Item cannot be shipped to the following state(s): AK,GU,HI,PR,VI


Model # BM3B

Internet # 202710992

Store SKU # 273222

The BLACK and DECKER BM3B is ideal for keeping your 6-Volt or 12-Volt battery fully charged when not in use. Simply plug the maintainer into any AC outlet and connect to your battery in any one three ways: Battery clips 12-Volt Dc accessory plug or the battery terminal rings. The BM3B will do the rest of the work, monitoring your battery with the Automatic micro processor, so that you can never over charge the battery.

  • For use with both 6-volt and 12-volt batteries
  • Automatic microprocessor battery monitoring
  • Reverse connection warning and ready indicator
  • 3 ways to connect battery clips, 12-volt accessory plug, and battery ring terminals

Info & Guides

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Amperage (amps)  Assembled Depth (in.)  5.06 in 
Assembled Height (in.)  9.62 in  Assembled Width (in.)  2.81 in 
Automatic shutoff  Yes  Automatic/Manual  Automatic 
Battery Test Function  No  Battery tester included  No 
Certifications and Listings  1-UL Listed,ETL Listed  Charger type  AC or DC 
Cooling fan  Yes  Cord Length (ft.) 
Engine start function  No  Handheld/wheels  Hand 
Manufacturer Warranty  Product Depth (in.)  5.06 
Product Height (in.)  9.62  Product Weight (lb.)  1.35 lb 
Product Width (in.)  2.81  Rechargeable  No 
Returnable  90-Day  Reverse Polarity Protection  Yes 
Voltage Output (volts)  120 V 



Most orders process within 3 business days.

Please allow 3 to 5 business days for Standard Shipping in addition to order processing time, which varies by product.  Items deliver by small parcel service.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.