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SigmasTek  |  SKU: BW-2017

APC CURK18 UPS Compatible Replacement Battery Set

Sale price $17.99 USD Regular price $25.33
Shipping calculated at checkout.

➤ Replacement set includes 2 SigmasTek SP6-7 batteries (6V 7AH) for APC CURK18

➤ High rate discharge supports short bursts of UPS power

➤ Valve regulated, spill proof, and maintenance free

➤ UL recognized and CE certified for safety

➤ 1 year warranty with expert customer support


📦🚀 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

6 Volts | 7 AH

Terminal Type

F1

SigmasTek SP6-7 Replacement Battery Set for APC CURK18 (2-Pack)

Ensure uninterrupted protection for your APC CURK18 with this precision-matched replacement UPS battery set. This pack contains two SigmasTek SP6-7 batteries (6 Volts, 7 AH each) engineered for dependable compatibility, strong discharge capability, and consistent performance under load. Designed for users who demand reliable emergency power and minimal downtime, this replacement UPS battery set provides the durability and support your APC unit requires.

Key Specifications

  • Brand: SigmasTek
  • Model: SP6-7
  • Voltage: 6 Volts
  • Capacity: 7 AH (Amp-hours) per battery
  • Quantity Included: 2 batteries (replacement battery set)
  • 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
  • Compatibility Note: Use all existing cables and hardware from original configuration to connect new UPS batteries
  • Compatible UPS Model: APC CURK18

Benefits

This high-performance UPS battery set offers exceptional reliability and a long-lasting battery life that keeps your APC CURK18 ready for unexpected outages. The high rate discharge architecture ensures rapid delivery of power when your UPS demands it most, making this an excellent choice for surge events or transient heavy loads. With valve-regulated, spill-proof construction, these batteries minimize maintenance and are safer to handle within enclosed UPS cabinets.

Low self-discharge preserves capacity during storage and reduces the need for frequent maintenance charging, while robust vibration resistance improves performance in mobile or vibration-prone installations. As a replacement UPS battery, this SigmasTek pack is factory fresh and UL/CE certified, providing proven quality and compliance. Common uses include Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery-powered tools, making it a versatile, high-performance UPS battery option.

Each battery is tested by our knowledgeable technicians to ensure it meets or exceeds OEM standards for the APC CURK18. Whether you manage a small server room or a critical workstation, these batteries restore reliable backup capacity quickly and affordably.

Don’t wait until power loss interrupts operations—purchase this replacement UPS battery set for the APC CURK18 now for fast shipping, a one-year warranty, and the assurance of a high-performance, long-lasting battery solution.


Payment & Security

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