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SigmasTek  |  SKU: BW-7504

John Deere STX48 Lawn Mower Compatible Replacement Battery

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

➤ Factory fresh and brand new for reliable performance

➤ 100% compatible with John Deere STX48 Lawn Mower models

➤ Absorbent Glass Mat (AGM) technology for deep cycle use

➤ Valve regulated and spill-proof for safe operation

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


📦🚀 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

Replacement John Deere STX48 Lawn Mower Battery (Compatible with John Deere STX48)

Designed as a direct-fit replacement for the John Deere STX48 Lawn Mower, this replacement battery delivers dependable starting power and consistent performance for your mowing and yard work needs. The unit meets the original SP12-35 NB (12 V 35 AH) specification and uses Absorbent Glass Mat (AGM) technology for improved cycle life, vibration resistance, and safe, maintenance-free operation. If you need a high-performance battery that’s 100% compatible with your STX48, this option is built to restore reliable operation quickly.

Key Specifications

  • Part Number: SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH (Amp-Hours)
  • Terminal Type: Nut & Bolt
  • Technology: Absorbent Glass Mat (AGM)
  • Application Type: Designed for Deep Cycle Usage
  • Construction: Valve Regulated, Spill Proof
  • Energy Density: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility: 100% compatible with John Deere STX48 Lawn Mower

Benefits

This replacement battery offers long service life thanks to its AGM deep cycle construction, which provides reliable performance through many charge and discharge cycles. As a high-performance battery, it delivers strong cranking power while maintaining steady voltage under load, so your STX48 starts easily and runs attachments without sagging. The valve-regulated, spill-proof design ensures safe operation without the need for regular water maintenance, and the robust build handles vibration and outdoor use.

Durability is a key advantage — the sealed design and superior energy density give you more usable power in a compact size, ideal for zero-turn mowers, garden tractors, and similar equipment. This replacement battery is also suitable for secondary uses such as small emergency backup power, UPS systems for low-draw devices, and powering portable tools where a dependable 12 V source is needed.

Certified by recognized safety bodies and backed by a one-year warranty, the unit provides peace of mind and consistent value. If you want to replace your STX48 battery with a long-lasting battery that offers maintenance-free convenience and strong performance, this battery is an excellent match.

Don’t wait — purchase this replacement battery for your John Deere STX48 today to restore reliable power. Orders for in-stock items are typically shipped within 24 hours. Buy now and get back to mowing with confidence.


Payment & Security

Payment methods

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