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SigmasTek  |  SKU: BW-5084

Best Power FERRUPS FES 1.8KVA UPS High Performance Replacement Battery Set

Sale price $155.20 USD Regular price $225.03
Shipping calculated at checkout.

➤ Includes 4 fresh SigmasTek SP12-18HR batteries (12V, 18AH)

➤ High rate discharge supports high power output UPS requirements

➤ Valve regulated, spill-proof design for safe, hassle-free use

➤ Low self-discharge and vibration resistance extend service life

➤ Certified by U.L. and CE, with a 1-year warranty


📦🚀 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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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

Replacement SigmasTek SP12-18HR Battery Set for Best Power FERRUPS FES 1.8KVA UPS

Keep your Best Power FERRUPS FES 1.8KVA performing at peak reliability with this new replacement UPS battery set. Designed for high-rate discharge scenarios, these batteries provide consistent, high-current output, low self-discharge, and strong vibration resistance so your UPS is ready when a power event occurs. If you want a high-performance UPS battery that’s a long-lasting battery replacement for the FERRUPS FES 1.8KVA, this kit offers tested, OEM-quality performance.

Key Specifications

  • Included batteries: 4 x SigmasTek SP12-18HR
  • Voltage: 12 Volts
  • Capacity: 18 AH (amp-hours)
  • Terminal type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Feature: Low Self-discharge
  • Feature: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility note: Requires use of all existing cables and hardware from original configuration to connect new UPS batteries
  • Compatible UPS brand/model: Best Power FERRUPS FES 1.8KVA
  • Battery brand: SigmasTek
  • Typical applications included: Uninterruptible Power Supply (UPS) Units; Emergency Power Supply; Battery Powered Tools

Benefits

This replacement UPS battery set is engineered for durability and dependable service life. The high-rate discharge architecture supplies the necessary surge power for the FERRUPS FES 1.8KVA during brief, high-demand events, while the valve-regulated spill-proof design reduces maintenance and improves operational safety. Low self-discharge helps retain capacity during standby periods, and high vibration resistance makes the set resilient in transport or in mounted installations.

As a high-performance UPS battery option, SigmasTek SP12-18HR cells are factory fresh and carry U.L. recognition and CE certification for trusted quality. These batteries are verified by knowledgeable staff to meet or exceed OEM specifications for the Best Power FERRUPS FES 1.8KVA, providing a long-lasting battery replacement ideal for IT, telecom, and emergency backup systems. They are also appropriate for battery-powered tools and other applications requiring reliable, short-term high current output.

Choose these batteries when uptime and safety are top priorities. The combination of tested performance, certified safety, and robust construction makes this kit a reliable solution for your UPS replacement needs.

Ready to replace the batteries in your Best Power FERRUPS FES 1.8KVA? Order this replacement UPS battery set today to ensure uninterrupted protection and fast shipping on in-stock items. Purchase now to secure dependable backup power.


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