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SigmasTek  |  SKU: BW-7354

MTD Q665H Lawn Mower High Performance Replacement Battery 24.72 lb

22% off
New arrival
Sale price $122.99 USD Regular price $156.99
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Factory fresh replacement battery for MTD Q665H Lawn Mower
Uses advanced Absorbent Glass Mat (AGM) technology for durability
Valve regulated and spill-proof for safe, maintenance-free use
Deep cycle design ensures reliable, long-lasting power performance
100% compatible with original MTD Q665H cables and hardware
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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 MTD Q665H Lawn Mower Battery — Compatible with MTD Q665H

Restore reliable starting and deep-cycle performance to your MTD Q665H with this factory-fresh replacement battery. Specifically engineered to be 100% compatible with the MTD Q665H lawn mower, this high-performance battery offers the consistent power you need for mowing, attachments, and maintenance tasks. With AGM technology and valve-regulated, spill-proof construction, it’s a long-lasting battery built to withstand outdoor use and seasonal storage.

Key Specifications

  • Compatible Model: MTD Q665H
  • Battery Model Required: SP12-35 NB (12 V 35 AH)
  • Voltage: 12 Volts
  • Capacity: 35 AH (Amp-Hours)
  • Terminal Type: Nut & Bolt
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Usage Type: Designed For Deep Cycle Usage
  • Construction: Valve Regulated Spill Proof Construction
  • 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
  • Brand: MTD (replacement)
  • Quantity Required: 1 battery

Benefits

  • Durability: Robust AGM construction resists leakage and tolerates vibration and outdoor conditions, delivering a dependable power source season after season.
  • Long Life: Engineered for deep-cycle use to provide extended service life and a long-lasting battery experience for frequent or extended mowing sessions.
  • High Performance: Superior energy density and optimized power-to-volume ratio ensure strong starting currents and consistent performance under load, classifying it as a true high-performance battery.
  • Multi-Purpose Use: Ideal for the MTD Q665H lawn mower, and also suitable for UPS backup systems, emergency power setups, and tools that need a stable 12V 35AH supply.
  • Certified Safety: U.L. recognition and CE certification ensure the battery meets established safety and quality standards.
  • Simple Swap-In: Designed for direct replacement — reuse all original cables and hardware for quick installation using the nut & bolt terminals.

Choose this replacement MTD Q665H battery for dependable power, long life, and proven performance backed by a 1-year warranty. If you want a reliable, long-lasting battery that performs under real-world conditions, add this high-performance battery to your cart and get fast shipping to get back to work.

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 : MTD Q665H Lawn
  • Manufacturer: SigmasTek
  • Product Type: Home Power Backup
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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