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SigmasTek  |  SKU: BW-7318

Murray 42531X8 Lawn Mower High Performance Replacement Battery

Sale price $102.50 USD Regular price $135.64
Shipping calculated at checkout.

➤ Factory fresh replacement battery for Murray 42531X8 Lawn Mower

➤ Utilizes Absorbent Glass Mat (AGM) technology for enhanced durability

➤ Valve regulated, spill-proof design ensures safe and reliable use

➤ High energy density offers superior power and long-lasting performance

➤ Backed by a 1-year warranty and CE/U.L. certifications for quality assurance


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ Quick Reminder

🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.

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Battery Care Guide

Battery Usage and Maintenance Guidelines 🔋

Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.

1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Operate the device until the battery reaches approximately 20% capacity.
  • Avoid premature recharging.
  • Do not allow the battery to fully discharge during the initial cycles.

Post-Conditioning

  • Recharge the battery only when necessary.
  • These batteries are capable of approximately 500 charge cycles:
  • Once daily → ~500 days
    Twice daily → ~250 days
    Note: Even a partial recharge is considered a full cycle.

2. Sealed Lead Acid (SLA) Batteries 💡

  • No conditioning required.
  • Maintain the battery in a fully charged state; avoid complete discharge.
  • Capable of 300–400 charge cycles.
  • Expected service life: 2–3 years, depending on usage conditions.

3. Laptop Batteries (Lithium-Ion) 💻

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Charge fully, then discharge to approximately 20% capacity.
  • Avoid complete discharge, as some devices may not detect a fully drained battery.

Post-Conditioning

  • Minimize frequent plugging and unplugging.
  • Allow the battery to discharge moderately at least once per month to maintain optimal performance.
  • Occasional cycling is recommended to sustain battery health.

Professional Recommendation

Adhering to these guidelines will enhance battery longevity and ensure reliable performance.

For further assistance regarding your battery or order, our customer support team is available to provide guidance.

Delivery and Shipping

Everything You Need to Know About Shipping with BatteryWeb (USA)

We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:

🚚 Shipping & Delivery

Most orders ship next business day (some products like sealed lead acid may take a little longer).

Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).

We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.

Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.

Transit times shown are estimates only (business days, no weekends/holidays).

🌍 Shipping Restrictions

Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.

PO Box deliveries are only available via USPS.

At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.

📦 Important Notes

Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.

If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.

💲 Currency & Pricing

All prices are shown in USD.

Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.

⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.

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.

🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).


Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Murray 42531X8 Lawn Mower Battery Replacement — Compatible with Murray 42531X8

This factory-fresh replacement battery is engineered to be 100% compatible with your Murray 42531X8 lawn mower. Built to deliver dependable starting power, reliable deep-cycle performance, and consistent runtime, this replacement battery offers the dependable energy your mower needs season after season. If you need a high-quality, high-performance battery that fits the Murray 42531X8 specification, this long-lasting battery is designed to meet those expectations while maintaining safe, spill-proof operation and certified reliability.

Key Specifications

  • Compatible Model: Murray 42531X8
  • 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 combines AGM technology and valve-regulated construction to deliver robust durability and leak-resistant operation. AGM design supports deep cycle performance so the battery tolerates repeated charge and discharge cycles while maintaining stable capacity—making it ideal for demanding yard equipment. As a high-performance battery, it delivers high energy density in a compact package, giving your mower the surge power required for startup and the steady output needed for sustained operation.

Durability features include rugged internal construction and spill-proof safety, reducing maintenance and improving safety during installation and use. The one-year warranty and U.L./CE recognition provide assurance of quality and compliance with safety standards. This long-lasting battery is versatile: while it’s optimized for lawn mowers like the Murray 42531X8, the same attributes make it suitable for related applications such as backup power, light emergency power systems, small UPS units, and power tools where a 12V 35AH deep-cycle battery is appropriate.

Installation is straightforward: reuse your existing cables and hardware and secure the nut & bolt terminals for a reliable connection. With factory-fresh condition and performance guaranteed, this replacement battery delivers excellent value and dependable service life for seasonal and everyday use.

Ready to upgrade? Buy this Murray 42531X8 replacement battery now to get a reliable, long-lasting battery with fast shipping and solid warranty protection—secure your mower’s power today.


Payment & Security

Payment methods

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  • Discover
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  • PayPal
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  • Visa

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