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SigmasTek  |  SKU: BW-2650

Best Technologies FERRUPS FC 3KVA UPS Compatible Replacement Battery Set

Sale price $791.99 USD Regular price $1,159.90
Shipping calculated at checkout.

➤ Includes 4 brand new SigmasTek SP12-75 IT batteries (12V, 75 AH)

➤ High rate discharge design for superior UPS performance

➤ Valve regulated, spill-proof for maintenance-free operation

➤ Low self-discharge extends battery readiness over time

➤ Tested to meet or exceed OEM specs with 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 | 75 AH

Terminal Type

Internal Thread

SigmasTek SP12-75 IT 4-Pack Replacement for Best Technologies FERRUPS FC 3KVA UPS

Restore reliable backup power to your Best Technologies FERRUPS FC 3KVA Uninterruptible Power Supply (UPS) with this set of four SigmasTek SP12-75 IT replacement batteries. Engineered for compatibility, safety, and consistent performance, this replacement UPS battery set is a smart upgrade for systems that depend on immediate, dependable power during outages. Each battery in the set is brand new, factory fresh, and built to deliver the high-rate discharge capability modern UPS systems demand.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-75 IT
  • Voltage (per battery): 12 Volts
  • Capacity (per battery): 75 AH
  • Quantity: 4 batteries (suitable for 48V systems)
  • Terminal Type: Internal Thread
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated, Spill Proof
  • Features: Low Self-discharge
  • Features: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Installation Note: Use existing cables and hardware from original configuration to connect the new UPS batteries

Benefits

  • Tailored for system reliability: This 4-pack ensures balanced charging and discharge across the Best Technologies FERRUPS FC 3KVA battery string, delivering consistent, reliable runtime when backup power is needed most.
  • Rapid power response: The high rate discharge design makes these batteries an excellent high-performance UPS battery option for providing immediate energy during short but intense load events.
  • Extended readiness and longevity: Low self-discharge prolongs shelf life and standby readiness, helping to create a long-lasting battery solution that reduces replacement frequency and maintenance overhead.
  • Robust safety and installation: Internal thread terminals and spill-proof construction minimize maintenance and ensure secure connections; U.L. and CE certifications add further confidence in safe operation.
  • Versatile use cases: Perfect for Uninterruptible Power Supply (UPS) units like the Best Technologies FERRUPS FC 3KVA, emergency power systems, and battery-powered tools requiring reliable bursts of power.

Ensure uninterrupted protection for your Best Technologies FERRUPS FC 3KVA—purchase this SigmasTek SP12-75 IT 4-pack replacement UPS battery set today. Fast fulfillment and OEM-level performance make this the practical choice for long-lasting battery replacement.


Payment & Security

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