Marine Starting Battery, 1050MCA, Group 27


In stock online.
Store Pickup Only
Model # 15020126 | Mfg # WM27M6 | UPC # 25282163694

Frequently Bought Together:

Total Price: $228.98

Not just a car battery, West Marine Starting Batteries are built to last in the marine environment.

Designed to deliver more power per pound than competitive starting batteries, West Marine Starting Batteries feature a no-spill design that allows you to heel over to angles up to 45°. The exclusive molded-in stainless steel studs and hex nut terminals make connections easy, while protecting against corrosion and failure.

Flush top and low-profile flush covers keep the battery top clean and acid-free, making them easy to restrain and eliminating lost caps. Plate separators prevent life-shortening internal short circuits.

Manufactured in the U.S. for West Marine by East Penn, one of the most reputable battery companies in the country. Each battery receives over 250 quality control checks to guarantee consistent and superior performance. East Penn’s award winning factory leads the industry in closed loop and sustainable practices. Nearly all of the plastics, lead and acid are recycled, so our batteries are great for your boat and the environment.

 Key Features

  • High cranking power for quick engine starts
  • Flush cover, complete with handle, is easy to install
  • Optimized full frame plates better withstand severe service demands and provide maximum current transfer
  • Exclusive molded in dual terminals provide an easy connection with post or corrosion-resistant stainless steel stud
  • Extended life systems include special separators to prevent life-robbing electrical shorts and protect power producing components
  • Manufactured in the USA
  • 12 month free replacement warranty


  • Group Size: Group 27
  • Terminal Type: Molded-in SAE posts and vertical 5/16” NEG., 5/16” POS stainless steel studs with hex nuts
  • Cold Cranking Amps (CCA):840 CCA
  • Marine Cranking Amps (MCA):1050 MCA
  • Reserve Minutes: 182 Res. Min.
  • Weight: 57 ½ lbs.
  • Dimensions: 12 1/2"L x 6 3/4"W x 9 3/8"H
  • Warranty: 12-month free replacement

Core charge will apply to battery purchase if an old 12V battery is not exchanged at the time of purchase.  

 WARNING: Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Batteries also contain other chemicals known to the State of California to cause cancer. Wash hands after handling. For more information, go to www.P65Warnings.ca.gov.


Marine Starting Battery, 1050MCA, Group 27

Name Value
Battery Type Starting
Group Size Group 27
Cold Cranking Amps 840 CCA
Dimensions 6 3/4" Width x 9 3/8" Height x 10 3/4" Length
Marine Cranking Amps 1050 MCA
Reserve Minutes 182
Type Tapered Stud and Wing Nuts
Voltage 12 Volts DC
Warranty Details One Year Free Replacement


The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

Related West Advisor Articles


Product Q & A


FREE DELIVERY to West Marine Stores

  • Available for ALL products including hazardous & truck freight items.
  • Ship to over 240 U.S. store locations.
  • Contiguous United States orders arrive in 7 - 10 days.
  • Hawaii and Alaska orders arrive in 10 - 16 days.
  • Expedited shipping is available for an additional fee.
  • Not available in Puerto Rico.

FREE SHIPPING on Orders over $49.00

  • Applicable on orders over $49.00 within the 48 contiguous United States.
  • Does not apply to Truck Freight.
  • No coupon code required.
  • Orders will be delivered within 3 - 7 business days.


We stand behind everything we sell. If at any time your West Marine purchase does not meet your expectations, you can return it for a replacement or refund. If you are a West Advantage Rewards member, you don't even need a receipt - we'll have a record of your purchase. Returns can be made via mail or in person at their nearest store location. If you are not a West Advantage Rewards member, we will first need to verify your purchase by receipt or other method.

We do carry a few items that cannot be returned. This includes: items with expiration dates that have expired such as flares, charts, annual publications; items registered to the user such as boats, motors, EPIRBs, PLBs, SPOT, Class B AIS, life rafts; customized items such as rigging, and boat covers, computer software and electronics charts. Other non-returnable items include carry-on air conditioners, generators and select electronics. We will help you contact the vendor for assistance or repair on product that cannot be returned to West Marine. Items containing hazardous material may only be returned to a West Marine store.

For additional inquiries, you may call Customer Service at 1-800-BOATING (262-8464).