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SigmasTek  |  SKU: BW-3630

APC CURK5 UPS High Performance Replacement Battery Set

Sale price $29.82 USD Regular price $37.67
Shipping calculated at checkout.

➤ Includes 2 SigmasTek 12V 7.5AH batteries for APC CURK5 UPS

➤ High discharge rate supports reliable power backup

➤ Spill-proof valve regulated design for easy maintenance

➤ Low self-discharge for extended battery life

➤ Certified and covered by 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 | 7.5 Ah

Terminal Type

F2

Replacement Battery Set for APC CURK5 UPS — SigmasTek SP12-7.5HR (2-Pack)

Keep your APC CURK5 UPS running at peak readiness with this compatible replacement UPS battery set. The two SigmasTek SP12-7.5HR batteries provide reliable capacity and high discharge performance to support your UPS through outages and high-load events. If you need a dependable replacement UPS battery that balances safety, longevity, and performance, this set is tailored for the APC CURK5.

Key Specifications

  • Compatible UPS Model: APC CURK5
  • Battery Brand: SigmasTek
  • Battery Model: SP12-7.5HR
  • Quantity: 2 batteries (replacement set)
  • Voltage: 12 Volts
  • Capacity: 7.5 AH (amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge; High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Typical Applications: Uninterruptible Power Supply (UPS) Units; Emergency Power Supply; Battery Powered Tools
  • Installation Note: Use all existing cables and hardware from your original configuration to connect the new UPS batteries

Benefits

These SigmasTek batteries offer lasting reliability and are an excellent long-lasting battery option for maintaining your APC CURK5. The valve-regulated, spill-proof design helps prevent leaks and reduces maintenance overhead. Low self-discharge preserves readiness during storage, and high vibration resistance enhances operational stability in varied environments.

With a high rate discharge design, this high-performance UPS battery set supports the APC CURK5 through short-term high-power demands without compromising safety or stability. This makes it an ideal choice for UPS systems protecting sensitive electronics, emergency power supplies that must respond instantly, and battery-powered tools that require dependable energy bursts.

Each set is brand new, factory tested, U.L. recognized, and CE certified, and comes with a 1 year warranty. Our team tests products to ensure they meet or exceed OEM specifications so you can rely on consistent, long-lasting performance.

Don’t wait until your backup power is compromised — purchase this long-lasting, high-performance replacement UPS battery set for the APC CURK5 today and benefit from quick shipping on in-stock items.



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