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SigmasTek  |  SKU: BW-8003

Friendly Robotics Robomower STC85400 High Performance Replacement Battery for Lawn Mower

Sale price $86.01 USD Regular price $113.82
Shipping calculated at checkout.

➤ 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


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ Quick Reminder

🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.

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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.
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Battery Care Guide

Battery Usage and Maintenance Guidelines 🔋

Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.

1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Operate the device until the battery reaches approximately 20% capacity.
  • Avoid premature recharging.
  • Do not allow the battery to fully discharge during the initial cycles.

Post-Conditioning

  • Recharge the battery only when necessary.
  • These batteries are capable of approximately 500 charge cycles:
  • Once daily → ~500 days
    Twice daily → ~250 days
    Note: Even a partial recharge is considered a full cycle.

2. Sealed Lead Acid (SLA) Batteries 💡

  • No conditioning required.
  • Maintain the battery in a fully charged state; avoid complete discharge.
  • Capable of 300–400 charge cycles.
  • Expected service life: 2–3 years, depending on usage conditions.

3. Laptop Batteries (Lithium-Ion) 💻

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Charge fully, then discharge to approximately 20% capacity.
  • Avoid complete discharge, as some devices may not detect a fully drained battery.

Post-Conditioning

  • Minimize frequent plugging and unplugging.
  • Allow the battery to discharge moderately at least once per month to maintain optimal performance.
  • Occasional cycling is recommended to sustain battery health.

Professional Recommendation

Adhering to these guidelines will enhance battery longevity and ensure reliable performance.

For further assistance regarding your battery or order, our customer support team is available to provide guidance.

Delivery and Shipping

Everything You Need to Know About Shipping with BatteryWeb (USA)

We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:

🚚 Shipping & Delivery

Most orders ship next business day (some products like sealed lead acid may take a little longer).

Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).

We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.

Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.

Transit times shown are estimates only (business days, no weekends/holidays).

🌍 Shipping Restrictions

Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.

PO Box deliveries are only available via USPS.

At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.

📦 Important Notes

Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.

If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.

💲 Currency & Pricing

All prices are shown in USD.

Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.

⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.

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.

🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).


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.


Payment & Security

Payment methods

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