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SigmasTek  |  SKU: BW-7211

Simplicity Express 15.5H Lawn Mower High Performance Replacement Battery 24.72 lb

10% off
New arrival
Sale price $122.99 USD Regular price $136.99
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Factory fresh and brand new for reliable performance
100% compatible with Simplicity Express 15.5H Lawn Mower
Utilizes Absorbent Glass Mat (AGM) technology for durability
Valve regulated and spill-proof design for safety
Backed by a 1-year warranty and guaranteed performance
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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.

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Volts & Amps

12 Volts | 35 AH

Terminal Type

Nut & Bolt

Simplicity Express 15.5H Lawn Mower Replacement Battery (SP12-35 NB)

Bring back reliable starting power and consistent run-time to your Simplicity Express 15.5H Lawn Mower with this replacement battery. The SP12-35 NB (12 V 35 AH) unit is factory fresh and fully compatible, designed to deliver the dependable, long-lasting battery performance you need for regular lawn care and heavy-duty cutting tasks. This replacement battery supports deep-cycle use and is made to meet the rigors of outdoor equipment.

Key Specifications

  • Model: SP12-35 NB
  • Compatible With: Simplicity Express 15.5H Lawn Mower
  • Voltage: 12 V
  • Capacity: 35 AH
  • Terminal Type: Nut & Bolt
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Usage Type: Designed For Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof Construction
  • Performance Feature: Power/Volume Ratio Yielding Unrivaled Energy Density
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Quantity Required: 1 battery

Benefits

Engineered as a high-performance battery, this SP12-35 NB offers extended cycle life and dependable output for consistent mowing and frequent starts. The AGM design ensures spill-proof operation and improved resistance to shock and vibration — key for lawn mowers and other outdoor tools. As a long-lasting battery choice, it helps reduce replacements and maintenance over the life of your equipment.

The deep-cycle capability means this battery handles repetitive discharge and recharge cycles well, delivering reliable power for more than just lawn mowers. It’s also suitable for UPS backup, emergency power, and portable tools where a steady 12 V 35 AH supply is advantageous. The valve-regulated construction reduces maintenance and improves safety, while U.L. and CE recognition confirm quality and compliance.

Installation is easy when reusing your existing cables and hardware. The nut & bolt terminal delivers a secure connection and ensures reliable electrical contact for immediate use. With performance guaranteed and a one-year warranty, this replacement battery restores dependable power to your Simplicity Express 15.5H.

Don’t wait — order your replacement Simplicity Express 15.5H SP12-35 NB now. Need help? Call or e-mail our customer service team. In-stock items are generally shipped within 24 hours.

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 : Simplicity Express 15.5H
  • Manufacturer: SigmasTek
  • Product Type: Home Power Backup
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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