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SigmasTek  |  SKU: BW-7640

Heilman Enterprises 11-77 Compatible Lawn Mower Replacement Battery 24.72 lb

13% off
New arrival
Sale price $122.99 USD Regular price $140.99
Shipping calculated at checkout.
Factory fresh replacement battery for Heilman Enterprises 11-77 Lawn Mower
Utilizes Absorbent Glass Mat (AGM) technology for enhanced durability
Deep cycle design ensures long-lasting, reliable power
Valve regulated, spill-proof construction for safety and maintenance-free use
U.L. recognized and CE certified, backed by a 1-year warranty
In stock

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Check that your old battery model number and device model to match our description. This makes sure they work together.


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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

Heilman Enterprises 11-77 Lawn Mower Replacement Battery - Compatible with Heilman Enterprises 11-77

Restore power to your Heilman Enterprises 11-77 Lawn Mower with this brand new replacement battery. The SP12-35 NB (12 V 35 AH) battery is engineered for compatibility, reliable output, and consistent deep-cycle performance. If you need a high-performance replacement battery that offers long life and dependable operation in lawn and garden equipment, this unit is an ideal choice.

Key Specifications

  • Compatible Model: Heilman Enterprises 11-77 Lawn Mower
  • Model Number: SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH
  • Terminal Type: Nut & Bolt
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Design: 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
  • Quantity Required: 1 battery
  • Performance: Performance Guaranteed
  • Shipping Note: Orders for in-stock items are typically shipped within 24 hours

Benefits

The Heilman Enterprises 11-77 replacement battery is built for durability and reliable deep-cycle performance. AGM technology ensures resilience against vibration and reduces maintenance needs, delivering a long-lasting battery solution for heavy mowing and repeated charge/discharge cycles. Its valve-regulated, spill-proof design enhances safety during installation and use.

This high-performance battery provides excellent power density for its size, making it suitable for compact battery bays while still delivering ample runtime. Use it not only in lawn mowers but also in small UPS systems for backup power, emergency power applications for critical low-voltage devices, and portable tools requiring steady DC power. Certification by U.L. and CE confirms compliance with established safety standards.

Installation is simple—retain and reuse your mower’s existing cables and hardware to connect this compatible replacement. If you need guidance selecting or installing the battery, contact customer service at or e-mail us for help.

Order your Heilman Enterprises 11-77 replacement battery today to ensure dependable performance and long life. Backed by a 1 year warranty and fast shipping, it’s an easy upgrade for reliable power.

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 : Heilman Enterprises 11-77
  • Manufacturer: SigmasTek
  • Product Type: Home Power Backup
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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