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STANLEY BM1S Fully Automatic 1 Amp 12V Battery Charger/Maintainer with Cable Clamps and O-Ring Terminals

  • Based on 1,439 reviews
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$29.39 Why this price?
New Year Deal · 26% off was $39.95

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Features

  • Charges and maintains 12 volt batteries in most vehicles using 1 Amp rapid charge
  • Easy connection to vehicle battery using battery clips or O-ring terminals
  • Stops charging automatically when battery is fully charged or topped off, switching to float mode monitoring
  • Built-in circuit protection guards against overcharging, reverse polarity, or short circuit
  • Sealed for protection against moisture, dust, and oil

Brand: STANLEY


Color: Red, Yellow, Black


Product Dimensions: 2.5"D x 9.3"W x 4.9"H


Item Weight: 11.2 Ounces


Input Voltage: 12 Volts


Manufacturer: ‎Baccus Global LLC


Brand: ‎STANLEY


Model: ‎BM1S


Item Weight: ‎11.2 ounces


Product Dimensions: ‎9.3 x 2.5 x 4.9 inches


Country of Origin: ‎China


Item model number: ‎BM1S


Exterior: ‎Machined


Manufacturer Part Number: ‎BM1S


Amperage: ‎1 Amps


Voltage: ‎12 Volts


Date First Available: March 29, 2017


Frequently asked questions

This product is currently out of stock. Please check back later for shipping info.

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Makes keeping your batteries ready for use easy and safe.
I have a number of 12v lead-acid batteries that power everything from uninterruptable power supplies to yard equipment. This unit makes it easy to bring them gently up to the right voltage and maintain it. Will probably buy a couple more. Seem to be of good quality.
Reviewed in the United States on October 12, 2023 by Tim in VA

  • Worked great
Works great
Reviewed in the United States on September 30, 2023 by Junior R Stephens

  • Tried this short term
It works, I buy these for winter use to maintain all the batteries. Hope it'll last a few years at least.
Reviewed in the United States on August 31, 2023 by Joseph Miller

  • Comes in Handy
Looks good and works good
Reviewed in the United States on August 3, 2023 by Dick

  • no issues
works perfectly.. keeps the battery charged with no overheating or any issues.. i have 2 others ive used for over 3 years and still no problems (fingers crossed)
Reviewed in the United States on June 15, 2023 by lori tennant

  • Nice
Nice
Reviewed in the United States on July 1, 2023 by richard sanchez

  • Great product
I have 10-12 of these units and I love them. They work great. I have them on most all of my equipment that I don't use on a regular basis.
Reviewed in the United States on May 6, 2023 by Amazon Customer

  • Keeps your car battery charged if in storage.
Very handy to have on-hand to charge a stored battery and easy to use.
Reviewed in the United States on May 18, 2023 by Victoria Griswold

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