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-5020

APC SMART-UPS XL SUA3000 High Performance Compatible Replacement Battery Cartridge

Sale price $293.32 USD Regular price $425.31
Shipping calculated at checkout.

➤ Includes 5 high capacity 12V 18AH batteries for reliable power

➤ High rate discharge design for short bursts of increased power

➤ Valve regulated spill proof for safe, maintenance-free use

➤ Low self-discharge extends battery life during storage

➤ Factory fresh with 1 year warranty and tested to OEM specs


📦🚀 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

24 Volts | 18 Ah

Terminal Type

Special Connector

Compatible Replacement Battery Cartridge for APC SMART-UPS XL SUA3000 - 4x SigmasTek (APC SMART-UPS XL SUA3000)

This plug & play compatible replacement battery cartridge is purpose-built for the APC SMART-UPS XL SUA3000. It includes four SigmasTek 12 Volt 18 AH batteries pre-assembled with wire harnesses, connecting plates, and terminal covers so you can quickly restore backup power with minimal downtime. If you need a reliable replacement UPS battery cartridge that combines tested performance and straightforward installation, this SUA3000 option delivers.

Key Specifications

  • Compatible UPS model: APC SMART-UPS XL SUA3000
  • Included batteries: 4 x SigmasTek (12 Volts 18 AH each)
  • Per-battery voltage: 12 Volts
  • Per-battery capacity: 18 AH
  • Pack voltage (as listed): 24 Volts
  • Assembly: Batteries pre-assembled with wire harnesses, connecting plates and terminal covers
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Feature: Low Self-discharge
  • Feature: High Vibration Resistance
  • Certification: U.L. Recognized
  • Condition: Brand New, Factory Fresh Batteries
  • Connector: Special Connector (as listed)
  • Warranty: 1 Year Warranty

Benefits

The SUA3000 replacement cartridge is an efficient way to get your UPS back to full protection. Pre-assembled components mean fewer installation steps, and the plug & play design reduces service time and complexity. As a high-performance UPS battery option, the cartridge supports brief high-current events thanks to its high rate discharge design—perfect for supporting servers, storage arrays, and telecom equipment through short outages.

Long-lasting battery characteristics such as low self-discharge and valve regulated spill-proof construction keep maintenance minimal while helping ensure your system is ready when needed. The cartridge’s high vibration resistance and UL recognition further support reliable operation in demanding environments. Typical applications include uninterruptible power supply systems, emergency power backups, and battery-powered tools that require dependable performance.

Each battery cartridge is factory fresh and thoroughly tested. In-stock items usually ship within 24 hours, and our customer service team is available to assist with compatibility or installation questions.

Restore reliable backup power today — order this long-lasting, high-performance replacement UPS battery cartridge for the APC SMART-UPS XL SUA3000 and get the protection your equipment deserves.


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.