Heilman Enterprises 8-77 Compatible Lawn Mower Replacement Battery 24.72 lb
— Ready to ship immediately
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.
Heilman Enterprises 8-77 Compatible Lawn Mower Replacement Battery is backordered and will ship as soon as it is back in stock.
Let customers speak for us
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
✉ sales@batteryweb.com
Battery Care Tips
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
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
⚠️ 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
Heilman Enterprises SP12-35 NB Replacement Battery — Compatible with 8-77 Lawn Mower
Replace your worn battery with a factory-fresh, high-quality replacement battery made specifically for the Heilman Enterprises 8-77 Lawn Mower. This SP12-35 NB unit delivers reliable starting power and deep-cycle performance so your mower runs dependably season after season. Designed for performance and built for reliability, this long-lasting battery combines AGM technology and valve-regulated construction to provide a high-performance battery option that’s ideal for demanding outdoor equipment.
Key Specifications
- Brand: Heilman Enterprises
- Compatible Model: 8-77 Lawn Mower
- Replacement Model: SP12-35 NB
- Voltage: 12 Volts
- Capacity: 35 AH
- Terminal Type: Nut & Bolt
- Quantity Required: 1 battery
- Technology: Absorbent Glass Mat (AGM) Technology
- Designed For: Deep Cycle Usage
- Construction: Valve Regulated Spill Proof Construction
- Performance/Design Note: Power/Volume Ratio Yielding Unrivaled Energy Density
- Safety/Approvals: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Installation Note: Use all existing cables and hardware from original configuration
Benefits
This replacement battery is engineered for durability and extended service life. AGM technology provides superior vibration resistance and longer life compared with conventional flooded batteries, making it a reliable choice for lawn mowers and other outdoor equipment. The valve-regulated, spill-proof construction reduces maintenance and improves safety during normal operation and transport.
Expect consistent high performance for repeated starts and long run-times — a genuine high-performance battery tailored for deep cycle use. The power-to-volume ratio is optimized to deliver unrivaled energy density, which helps smaller battery compartments deliver more usable capacity. That makes this SP12-35 NB an excellent long-lasting battery option for heavy-use scenarios.
Typical applications include mower starting and accessory power, small utility vehicles, backup and emergency power for low-draw systems, portable tools that require steady deep-cycle output, and other outdoor equipment where vibration and environmental resistance matter. It also works well in UPS and emergency power roles for compact systems that need dependable reserve capacity.
Ready to upgrade? Buy your Heilman Enterprises SP12-35 NB replacement battery with confidence today and enjoy dependable starts, improved runtime, and a 1 year warranty. Order now to secure a long-lasting battery and fast shipping.
Technical Specifications
Product Highlights
- Brand Replacement : Heilman Enterprises 8-77
- Manufacturer: SigmasTek
- Product Type: Home Power Backup
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.




