Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com

WELCOME5
SigmasTek  |  SKU: BW-6939

12V 55Ah High Capacity Lawn Mower Replacement Battery 36.03 lb

21% off
New arrival
Sale price $209.99 USD Regular price $265.99
Shipping calculated at checkout.
High performance 12V 55AH capacity for reliable lawn mower operation
Maintenance-free, spill-proof AGM technology for safe and hassle-free use
Wide operating temperature range ensures consistent power in various climates
Guaranteed compatibility with original battery specification and NB terminal type
1-year warranty and quick 1-day shipping for customer satisfaction and peace of mind
In stock

— Ready to ship immediately

Free shipping

Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe

Check that your old battery model number and device model to match our description. This makes sure they work together.


We ship your order same day if you buy it before 4 PM EST.

Send Your Battery Photo

Expert Technician Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.

POST YOUR BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 55 AH

Terminal Type

Nut & Bolt

12V 55AH Lawn Mower Battery — Compatible Replacement (NB Terminal)

This 12V 55AH Lawn Mower Battery is a high-capacity, high-performance replacement battery engineered to meet or exceed original manufacturer specifications. With a 55 AH rating and robust, high-discharge design, this long-lasting battery provides dependable power for heavy-duty lawn equipment and other demanding applications. Built with SLA chemistry and AGM technology, it offers maintenance-free, spill-proof operation and wide temperature tolerance to ensure reliable performance season after season.

Key Specifications

  • Volts: 12
  • Amps / Capacity: 55 AH
  • Terminal: NB (Nut & Bolt)
  • Weight: 36 Lbs
  • Length: 9.04 inches
  • Width: 5.45 inches
  • Height: 8.15 inches
  • Chemistry: SLA (Sealed Lead Acid)
  • Technology: AGM (Absorbent Glass Mat)
  • Features: Maintenance-free, Spill Proof
  • Compatibility: Guaranteed compatibility with original battery
  • Warranty: 1-year Warranty
  • Shipping: UPS Ground and USPS; ships in 1 business day for in-stock items

Benefits

As a heavy-duty replacement battery, the 12V 55AH Lawn Mower Battery offers extended runtime and strong discharge capability, making it an ideal choice for larger mowers, utility vehicles, and applications that require sustained power delivery. Its AGM design ensures minimal internal resistance, quick recharge rates, and exceptional tolerance to deep-cycle or cyclic use when compared to traditional flooded batteries. The maintenance-free, spill-proof construction minimizes upkeep and simplifies installation — just replace in the original configuration and reuse your existing cables and mounting hardware.

This high-performance battery is also well-suited for broader uses: backup power for UPS units, emergency power for lighting and communications, powering heavy-duty tools, and other off-grid or mobile power applications. The combination of high amp-hour capacity, dependable NB-style terminals, and rugged SLA/AGM construction delivers a long-lasting battery solution you can trust for demanding jobs and seasonal workloads. With a 1-year warranty and guaranteed compatibility, you’ll have reliable protection and support after purchase.

Need more than one? Batterysharks.com offers quantity discounts for bulk orders — submit an RFQ and a representative will help. Buy the 12V 55AH Lawn Mower Battery (NB) now to upgrade to a high-performance, long-lasting battery with fast shipping and confident compatibility.

Technical Specifications

Voltage12 Volts
Amp Hours55 AH
Terminal TypeNut & Bolt
Length (in.)9.04
Width (in.)5.45
Height (in.)8.15
Weight (lb.)36.0

Product Highlights

  • Brand Replacement : 12V 55AH Lawn
  • Manufacturer: SigmasTek
  • Product Type: Home Power Backup
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.