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SigmasTek  |  SKU: BW-1343

APC SMART-UPS XL SU48RMXLI3U High Performance Replacement Battery Set

Sale price $197.99 USD Regular price $283.15
Shipping calculated at checkout.

➤ Set of 8 replacement batteries for APC SMART-UPS XL SU48RMXLI3U UPS

➤ AGM technology offers maintenance-free, leak-proof performance

➤ UL certified, ensuring safety and durability standards

➤ 12V 9AH with F2 terminal fits original UPS configuration

➤ Fast shipping and backed by a 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 | 9 AH

Terminal Type

F2

Replacement 12V 9AH Battery Set for APC SMART-UPS XL SU48RMXLI3U

Restore full backup capability to your APC SMART-UPS XL SU48RMXLI3U with this matched set of eight replacement batteries. Designed to meet or exceed original specifications, these 12V 9AH AGM batteries deliver reliable performance, consistent runtime, and the durability needed for rack-mount UPS installations. Each battery is UL certified and sourced to provide a high-performance UPS battery solution for enterprise and mission-critical environments.

Key Specifications

  • Package contains: 8 batteries (price includes all 8 batteries)
  • Chemistry: SLA (Sealed Lead Acid)
  • AGM Technology: Absorption Glass Mat sealed battery technology
  • Guaranteed compatibility: Guaranteed compatibility with original battery set
  • Warranty: 1-year Warranty
  • Volts: 12 V
  • Amp Hours: 9 AH
  • Weight: 48.4Lbs
  • Length: 5.95 In
  • Width: 2.56 In
  • Height: 3.7 In
  • Terminal: F2
  • Source: ReplaceUPSBattery.com
  • Brand/Spec Sheets reference: SigmasTek UPS Batteries Spec Sheets
  • Shipping: UPS Ground and USPS; we ship in 1 business day for in-stock items
  • Certification: UL (Underwriters Laboratories) certified

Benefits

This replacement UPS battery set offers durability and consistent output for prolonged uptime. AGM construction provides a maintenance-free, sealed design that tolerates vibration and prevents electrolyte leakage, contributing to a long-lasting battery selection for your APC SMART-UPS XL SU48RMXLI3U. The matched set format ensures balanced performance and maximizes overall system life, avoiding premature failure due to mismatched cells.

Ideal applications include data centers, communication racks, servers, and other critical infrastructure requiring uninterrupted power. The high-performance UPS battery set ensures dependable emergency runtime and supports orderly shutdowns during extended outages. Installation is simple—replace the batteries in the same original configuration and reuse the existing cables and hardware. Always confirm the dimensions of your current batteries before ordering to account for any manufacturer changes.

If you need help selecting the correct replacement UPS battery set or have questions about installation, contact our customer service team via email, chat, or call toll-free at (800) 657-1303. We offer fast shipping for in-stock items and back this product with a one-year warranty.

Secure reliable backup for your APC SMART-UPS XL SU48RMXLI3U today—purchase this complete set of high-performance, long-lasting batteries now.


Payment & Security

Payment methods

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