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SigmasTek  |  SKU: BW-7245

Scag Power Equipment STH-18KH High Performance Lawn Mower Replacement Battery 24.72 lb

23% off
New arrival
Sale price $122.99 USD Regular price $158.99
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Factory fresh replacement battery for Scag Power Equipment STH-18KH Lawn Mower
100% compatible with original Scag Power Equipment STH-18KH model
Absorbent Glass Mat (AGM) technology for enhanced durability and performance
Valve regulated, spill-proof design ensures safe and maintenance-free use
Backed by a 1-year warranty for reliable, long-lasting power
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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.

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.

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🔹 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 Scag Power Equipment STH-18KH Lawn Mower Battery (STH-18KH Compatible)

Specifically built to match the Scag Power Equipment STH-18KH lawn mower requirements, this brand new replacement battery offers dependable compatibility, consistent power delivery, and rugged reliability. If your STH-18KH needs a replacement, this factory-fresh battery delivers the deep cycle capability and maintenance-free performance required for heavy yard work and frequent starts.

Key Specifications

  • Compatible Model: Scag Power Equipment STH-18KH
  • Required Battery Part: SP12-35 NB (12 V 35 AH)
  • Voltage: 12 Volts
  • Capacity: 35 AH (Amp-hours)
  • Terminal Type: Nut & Bolt
  • Battery Technology: Absorbent Glass Mat (AGM)
  • Cycle 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
  • Performance: Performance Guaranteed

Benefits

This replacement battery delivers a long-lasting battery life and dependable starting power for the STH-18KH. AGM construction provides superior resistance to vibration and shock—important for lawn mowers that operate over uneven terrain—and is maintenance-free so you don’t have to top off fluid or perform routine service. The deep cycle design supports repeated discharge and recharge cycles, making this a practical, high-performance battery choice for seasonal and professional use.

Safety and reliability are reinforced by valve-regulated, spill-proof construction and recognized certifications (U.L. and CE). The battery’s high energy density yields more usable power relative to its size, enabling compact installation without sacrificing output. Typical applications include primary starting for lawn tractors, reserve power for lights and controls, and backup power for small equipment and accessories that depend on a stable 12V supply.

Because the STH-18KH requires the SP12-35 NB battery and uses the existing nut & bolt hardware, replacement is straightforward—swap in the new unit and restore reliable performance quickly. Backed by a 1 year warranty and a performance guarantee, this replacement battery is a smart, cost-effective choice when you need a dependable, long-lasting battery for your mower.

Restore dependable power to your Scag Power Equipment STH-18KH today—order this replacement battery now for fast shipping and reliable service. Buy with confidence and get back to mowing with a high-performance battery you can trust.

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 : Scag Power Equipment
  • Manufacturer: SigmasTek
  • Product Type: Home Power Backup
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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