For questions, quotes, or help finding the right battery, feel free to email us at sales@batteryweb.com

New collections added! Learn more

🎉 First Order Special 🎉

First-time shoppers get 5% OFF on batteries & accessories!

WELCOME5
SigmasTek  |  SKU: BW-8005

Friendly Robotics Robomower STC81000 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 STC81000

➤ 100% compatible with original Robomower STC81000 unit

➤ Uses Absorbent Glass Mat (AGM) technology for deep cycle performance

➤ Valve regulated, spill-proof design ensures safety and durability

➤ Comes with 1-year warranty and guaranteed performance


📦🚀 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.

📸 Send Your Battery Photo / Unsure? Expert 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 IMAGE

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 STC81000 Replacement Battery (compatible with STC81000)

Return your Friendly Robotics Robomower STC81000 to reliable service with this premium replacement battery. Engineered for compatibility, dependable performance and long life, this high-performance battery ensures consistent power delivery and deep-cycle resilience for robotic mowing tasks. Upgrade to a replacement battery that offers both peace of mind and the runtime your mower requires.

Key Specifications

  • Compatible Model: Friendly Robotics Robomower STC81000
  • 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: Rugged AGM and valve-regulated construction help prevent leaks and minimize maintenance, making this replacement battery ideal for outdoor robotic mowers.
  • Long Life: Specifically intended for deep-cycle use, this long-lasting battery endures frequent charging cycles and delivers dependable seasonal performance.
  • High Performance: Offering a high power-to-volume ratio, the high-performance battery supports prolonged runtime and efficient power output for your Robomower.
  • Certified Safety: U.L. recognition and CE certification ensure the battery meets international safety and quality benchmarks.
  • Simple Replacement: Designed to match the STC81000 requirements and SP12-18HR part number—use your existing cables and hardware for quick installation.
  • Typical Uses: Best suited for robotic lawn mowers, UPS backup, emergency power, and similar deep-cycle applications where a reliable replacement battery is essential.
  • Warranty Assurance: The included 1-year warranty and guaranteed performance reduce risk and provide confidence in everyday use.

Ready to replace the battery in your Friendly Robotics Robomower STC81000? Order this trusted, long-lasting battery today and get fast shipping on in-stock items. Keep your mower running smoothly with a dependable replacement battery that performs when you need it most.


Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.