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SigmasTek  |  SKU: BW-4803

Alpha Technologies CFR 3000E UPS High Performance Replacement Battery Set

Sale price $369.94 USD Regular price $536.41
Shipping calculated at checkout.

➤ Set of 4 factory fresh SigmasTek SP12-35 NB batteries (12V, 35 AH)

➤ Designed for high rate discharge to support UPS power demands

➤ Durable valve regulated, spill-proof construction prevents leaks

➤ Superior vibration resistance protects battery integrity in tough environments

➤ Backed by U.L. recognition, CE certification, and 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 | 35 AH

Terminal Type

Nut & Bolt

Replacement Battery Set for Alpha Technologies CFR 3000E

Keep your Alpha Technologies CFR 3000E running at peak reliability with this purpose-built replacement battery set. Comprised of four SigmasTek SP12-35 NB batteries, this kit is designed to deliver the high-rate discharge performance and dependable operation required by demanding UPS environments. Whether you're provisioning backup for servers, network gear, or emergency systems, this long-lasting battery package helps ensure uptime when power interruptions occur.

Key Specifications

  • Battery Quantity: 4 batteries per set
  • Battery Model: SigmasTek SP12-35 NB
  • Voltage: 12 Volts
  • Capacity: 35 AH (Ampere-hours)
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Self-discharge: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatible Brand: Alpha Technologies
  • Compatible UPS Model: CFR 3000E

Benefits

  • Engineered for durability, the valve-regulated, spill-proof construction and high vibration resistance ensure reliable performance in varied installation environments—helping extend the operational life of your replacement UPS battery.
  • The high rate discharge design supports brief periods of elevated demand, supplying the quick burst of power your CFR 3000E may require to maintain critical systems. This makes it an ideal high-performance UPS battery for transient loads.
  • Low self-discharge preserves energy over longer storage intervals, so batteries remain ready for deployment and reduce the need for frequent maintenance charging.
  • Certified by U.L. and CE, these batteries meet recognized safety and quality standards, giving technicians and facility managers confidence when replacing aging cells.
  • Typical applications include Uninterruptible Power Supply (UPS) units like the Alpha Technologies CFR 3000E, emergency power supply systems for critical alarms and lighting, and battery-powered tools that need reliable burst power. All units arrive brand new and are tested to meet or exceed OEM specifications.

Installation requires reuse of your existing cables and hardware from the original configuration. If you need a reliable, high-performance UPS battery and a long-lasting battery solution for your CFR 3000E, this SigmasTek set delivers tested results and dependable backup power.

Order your replacement batteries for the Alpha Technologies CFR 3000E now to secure superior runtime, fast shipping, and a 1 year warranty—buy with confidence and protect your critical systems today.


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