For questions, quotes, or help finding the right battery, feel free to email us at sales@batteryweb.com

New collections added! Learn more

🎉 First Order Special 🎉

First-time shoppers get 5% OFF on batteries & accessories!

WELCOME5
SigmasTek  |  SKU: BW-1872

UPS12-18 UPS High Performance Compatible Replacement Battery Set - 5

Sale price $194.00 USD Regular price $274.84
Shipping calculated at checkout.

➤ Includes 5 brand new SigmasTek UPS12-18 batteries (12V 18 AH)

➤ High rate discharge design ideal for UPS and emergency tools

➤ Valve regulated spill-proof construction prevents leaks

➤ Low self-discharge maintains charge during storage

➤ UL recognized and CE certified 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.

📸 Send Your Battery Photo / Unsure? Expert Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR IMAGE

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

SigmasTek UPS12-18 (NB) Replacement Set (5-Pack) - Compatible with UPS12-18 (NB)

Depend on a professional-grade replacement UPS battery solution for your UPS12-18 (NB) system. This 5-pack of SigmasTek 12 Volts 18 AH batteries provides the reliability and rapid discharge capacity required by many UPS and emergency power applications. Designed to perform under stress and tested to meet OEM expectations, this set offers the dependable backup power you need for critical systems.

Key Specifications

  • Quantity: 5 batteries
  • Model: UPS12-18 (NB)
  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 18 AH (Amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Self-discharge: Low Self-discharge
  • Resistance: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Terminal Type: Nut & Bolt
  • Warranty: 1 Year Warranty
  • Compatible Applications: Uninterruptible Power Supply (UPS) Units, Emergency Power Supply, Battery Powered Tools

Benefits

  • Durability: Robust, valve regulated construction and vibration-resistant design help protect the battery across a wide range of operating conditions and transportation scenarios.
  • Long life: Low self-discharge characteristics preserve capacity during storage and extend useful service life in the field, delivering a dependable long-lasting battery solution.
  • High performance: Engineered for high rate discharge, this high-performance UPS battery set supplies the burst power needed for UPS systems and short-duration emergency loads.
  • Safety and standards: U.L. Recognized and CE Certified to meet recognized safety standards—important for data centers, telecom closets, and facility infrastructure.
  • Versatile use: Suitable for Uninterruptible Power Supply (UPS) units, emergency power supply setups, and battery powered tools that require short-duration, high-current output.
  • Tested quality: Every pack is inspected and tested to ensure it meets or exceeds OEM performance expectations for reliable operation.

Choose this 5-pack SigmasTek UPS12-18 (NB) replacement UPS battery set to restore or expand your backup power capabilities. With fast shipping on in-stock items and a 1 year warranty, this long-lasting battery option gives you confidence in your UPS12-18 (NB) system. Add to cart now and secure dependable emergency power coverage.


Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.