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SigmasTek  |  SKU: BW-7672

Grass Hopper 725K High Performance Lawn Mower Replacement Battery

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

➤ Factory fresh, brand new replacement battery for Grass Hopper 725K Lawn Mower

➤ Uses Absorbent Glass Mat (AGM) technology for enhanced durability and performance

➤ Deep cycle design ensures long-lasting power and reliable energy output

➤ Valve regulated, spill-proof construction for safe and maintenance-free use

➤ 100% compatible with original hardware and cables; includes 1-year warranty


📦🚀 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 Grass Hopper 725K Lawn Mower Battery — Compatible with Grass Hopper 725K (SP12-35 NB)

Get reliable, factory-fresh power for your Grass Hopper 725K with this SP12-35 NB replacement battery. This 12 Volt, 35 AH unit uses Absorbent Glass Mat (AGM) construction to provide dependable deep-cycle performance and a sealed design for safe, maintenance-free service. If you need a long-lasting battery that offers consistent output for mowing and auxiliary power tasks, this high-performance battery is an excellent choice.

Key Specifications

  • Compatible Model: Grass Hopper 725K Lawn Mower
  • Required Quantity: 1 battery
  • Model Number: SP12-35 NB
  • Voltage: 12 Volts
  • Amp-Hours: 35 AH
  • Terminal Type: Nut & Bolt
  • Battery Technology: Absorbent Glass Mat (AGM)
  • Usage Type: Designed for Deep Cycle Usage
  • Construction: Valve Regulated, Spill Proof
  • Energy Characteristics: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Performance: Performance Guaranteed
  • Warranty: 1 Year Warranty

Benefits

This replacement battery delivers durability and reliable service life through its AGM design and valve-regulated construction. The sealed format eliminates fluid maintenance and reduces the risk of spills, making it safer for routine use on lawn tractors and mowers. As a high-performance battery, the SP12-35 NB maintains steady voltage under load, ensuring dependable starting and sustained run-times during long mowing sessions or demanding tasks.

The deep-cycle nature of this unit makes it a long-lasting battery choice for applications requiring repeated charge/discharge cycles. It’s suitable not only for Grass Hopper 725K mowers but also for use in small UPS systems, emergency backup power, and portable tools that need a reliable 12V deep-cycle source. Certifications including U.L. and CE provide added confidence in safety and manufacturing standards.

Installation is simple and straightforward: this replacement battery is 100% compatible with Grass Hopper 725K and should be connected using your original cables and hardware. Fast shipping for in-stock items helps minimize downtime so you can return to maintaining turf quickly.

Ready to secure a dependable, long-lasting replacement battery? Order your Grass Hopper 725K SP12-35 NB battery today for high-performance power backed by a 1 year warranty.


Payment & Security

Payment methods

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