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SigmasTek  |  SKU: BW-8003

Friendly Robotics Robomower STC85400 High Performance Replacement Battery for Lawn Mower 25.32 lb

25% off
New arrival
Sale price $113.99 USD Regular price $150.99
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Factory fresh replacement batteries for Friendly Robotics Robomower STC85400
100% compatible with original Friendly Robotics Robomower STC85400 unit
Absorbent Glass Mat (AGM) technology for deep cycle performance
Valve regulated, spill-proof design ensures safety and durability
Includes 1-year warranty and meets U.L. and CE certification standards
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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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⚠️ 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 | 18 Ah

Terminal Type

Nut & Bolt

Friendly Robotics Robomower STC85400 Replacement Battery (compatible with STC85400)

Keep your Friendly Robotics Robomower STC85400 running at peak performance with this factory-fresh replacement battery designed specifically for your model. This high-performance battery delivers reliable power, consistent deep-cycle capability and a long-lasting battery life that lawn care equipment demands. Engineered for compatibility and dependable operation, this replacement battery ensures your Robomower returns to full functionality quickly and safely.

Key Specifications

  • Compatible Model: Friendly Robotics Robomower STC85400
  • Required Quantity: 2 batteries (use matching pair)
  • Part Number: SP12-18HR
  • Voltage: 12 Volts
  • Capacity: 18 Ah (amp-hours)
  • Terminal Type: Nut & Bolt
  • Battery Type: Absorbent Glass Mat (AGM) Technology
  • Designed For: Deep cycle usage
  • Construction: Valve regulated, spill proof
  • Power/Volume: High energy density (power/volume ratio)
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand new, factory fresh
  • Warranty: 1 Year
  • Performance: Performance guaranteed

Benefits

  • Durability: The AGM construction and valve-regulated, spill-proof design reduce maintenance and increase resistance to vibration and shock—ideal for robotic lawn mowers that operate on uneven turf.
  • Long Life: Built for deep cycle usage, this long-lasting battery withstands repeated charge and discharge cycles to extend service life and reduce replacement frequency.
  • High Performance: As a high-performance battery, it offers superior energy density so your Robomower enjoys sustained runtime and reliable starts even under heavy load.
  • Safe and Certified: U.L. recognition and CE certification mean dependable safety standards and global compliance for household and commercial use.
  • Easy Replacement: Direct compatibility with the STC85400 and matching part number SP12-18HR simplifies installation—use your existing cables and hardware for a straightforward swap.
  • Typical Applications: Ideal for robotic lawn mowers, UPS backup scenarios, light emergency power, and other deep-cycle applications where a reliable replacement battery is required.
  • Warranty & Support: The included 1-year warranty and guaranteed performance provide confidence and peace of mind for daily use and seasonal storage.

Ready to restore full power to your Friendly Robotics Robomower STC85400? Order this replacement battery today and enjoy quick shipping on in-stock items—typically processed within 24 hours. Choose a reliable, long-lasting battery and get your Robomower back to work with the performance and dependability you expect.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Length (in.)7.13
Width (in.)3.0
Height (in.)6.59
Weight (lb.)25.3

Product Highlights

  • Brand Replacement : Friendly Robotics Robomower
  • Manufacturer: SigmasTek
  • Product Type: Home Power Backup
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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