Honda Harmony 1011 Lawn Mower High-Performance 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.
Honda Harmony 1011 Lawn Mower High-Performance 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
Replacement Honda Harmony 1011 Lawn Mower Battery - Compatible with Honda Harmony 1011
This factory-fresh replacement battery is engineered specifically for the Honda Harmony 1011 lawn mower, delivering reliable compatibility, consistent performance, and dependable uptime when you need it most. Built with Absorbent Glass Mat (AGM) technology and optimized for deep-cycle use, this replacement battery provides the stable power output required by your Harmony 1011. If you're looking for a high-performance battery that installs easily using your existing wiring and hardware, this long-lasting battery is a direct-fit solution that restores run time and reliability to your mower.
Key Specifications
- Battery Model: SP12-35 NB (12 V 35 AH)
- Voltage: 12 Volts
- Capacity: 35 AH
- Terminal Type: Nut & Bolt
- Technology: Absorbent Glass Mat (AGM)
- 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
Crafted for durability and dependable service life, this replacement battery combines rugged AGM construction with valve-regulated, spill-proof design to protect against vibration and outdoor conditions commonly encountered by lawn equipment. The AGM deep-cycle chemistry supports repeated discharge and recharge cycles, making it a long-lasting battery option for routine yard work and extended mowing sessions. As a high-performance battery, it delivers steady voltage under load so your Honda Harmony 1011 maintains cutting power without premature voltage drop.
Beyond lawn mowers, this battery’s robust build and high energy density make it suitable for related applications such as small utility vehicles, emergency lighting, backup UPS systems, and cordless tools that accept a 12 V 35 AH supply. Its U.L. and CE certifications reflect manufacturing quality and safety compliance, while the valve-regulated format eliminates routine maintenance and reduces risk of leaks—ideal for any outdoor gear that demands rugged, maintenance-free power.
Installation is straightforward: use all existing cables and hardware from your original configuration to connect the SP12-35 NB to your Harmony 1011. When you need a dependable, long-lasting battery replacement that restores performance, this unit offers excellent value and proven reliability.
Ready to restore full power? Buy this replacement battery for your Honda Harmony 1011 today and enjoy fast shipping, a 1 year warranty, and the confidence of a high-performance, long-lasting battery designed to keep your mower running strong.
Technical Specifications
Product Highlights
- Brand Replacement : Honda Harmony 1011
- 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.




