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-7672

Grass Hopper 725K High Performance Lawn Mower Replacement Battery 24.72 lb

25% off
New arrival
Sale price $122.99 USD Regular price $162.99
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
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 | 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.

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 : Grass Hopper 725K
  • 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.