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SigmasTek  |  SKU: BW-7321

Murray 30577X8A Lawn Mower High Performance Replacement Battery 24.72 lb

20% off
New arrival
Sale price $122.99 USD Regular price $152.99
Shipping calculated at checkout.
Factory fresh and brand new for reliable performance
100% compatible replacement for Murray 30577X8A Lawn Mower
Uses Absorbent Glass Mat (AGM) technology for deep cycle durability
Valve regulated, spill-proof design ensures safety and maintenance-free use
Backed by a 1-year warranty and certified for quality and safety
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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.

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


Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Murray 30577X8A Lawn Mower Battery Replacement — Compatible with Murray 30577X8A

Restore reliable starting and runtime for your Murray 30577X8A mower with this factory-fresh replacement battery. Engineered for compatibility and designed for consistent deep-cycle performance, this replacement battery offers dependable power, certified safety, and long-term value. If you want a high-performance battery that fits the Murray 30577X8A spec, this is a ready solution.

Key Specifications

  • Compatible Model: Murray 30577X8A
  • Battery Model Required: SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Terminal Type: Nut & Bolt
  • Technology: Absorbent Glass Mat (AGM)
  • Designed For: Deep Cycle Usage
  • Construction: Valve Regulated, Spill Proof
  • Power/Volume Ratio: High energy density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year
  • Quantity Required: 1 battery

Benefits

This replacement battery provides enhanced durability thanks to AGM internals and a robust, valve-regulated design that resists leaks and minimizes maintenance. The deep-cycle capability helps preserve capacity through repeated charging cycles, delivering a long-lasting battery solution for regular lawn care tasks. As a high-performance battery, it supplies dependable cranking power for startup and steady output for sustained operation under load.

Certified by U.L. and CE, the unit meets recognized safety and performance standards and comes with a one-year warranty for added peace of mind. The nut & bolt terminals deliver a secure attachment point when using your original cables and hardware, helping to ensure a clean electrical connection. While primarily targeted at lawn mowers like the Murray 30577X8A, this 12V 35AH battery is also well-suited to auxiliary roles such as small UPS systems, emergency power backups, and portable power for tools where a compact deep-cycle battery is required.

With factory-fresh condition and guaranteed performance, this replacement battery offers a practical upgrade path for anyone seeking reliable, long-term power for outdoor equipment.

Purchase this Murray 30577X8A replacement battery today to secure dependable performance, prompt shipping, and warranty-backed reliability for your mower.

Technical Specifications

Voltage12 Volts
Amp Hours35 AH
Terminal TypeNut & Bolt
Length (in.)7.72
Width (in.)5.14
Height (in.)6.22
Weight (lb.)24.7

Product Highlights

  • Brand Replacement : Murray 30577X8A Lawn
  • Manufacturer: SigmasTek
  • Product Type: Home Power Backup
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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