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SigmasTek  |  SKU: BW-4491

Eaton Powerware 103003438-5501 UPS Compatible Replacement Battery Set

Sale price $208.65 USD Regular price $263.53
Shipping calculated at checkout.

➤ Includes 2 brand new SigmasTek SP12-5.5HR batteries (12V 5.5AH)

➤ High discharge rate perfect for UPS and emergency power tools

➤ Valve regulated and spill-proof for safe, clean usage

➤ Low self-discharge and vibration resistance for durability

➤ U.L. recognized, CE certified, and covered 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 | 5.5 Ah

Terminal Type

F2

SigmasTek SP12-5.5HR Replacement Battery Set for Eaton Powerware 103003438-5501

This premium replacement UPS battery set is engineered specifically for the Eaton Powerware 103003438-5501 and delivers reliable compatibility, consistent performance, and field-proven reliability. The set includes twenty SigmasTek SP12-5.5HR batteries (12 Volts, 5.5 AH) designed for high rate discharge applications where a high-performance UPS battery is required to deliver short bursts of elevated power. If you need a dependable, long-lasting battery solution for your Eaton Powerware 103003438-5501 UPS, this factory-fresh replacement UPS battery set is built to meet demanding runtime and peak load demands while preserving safety and longevity.

Key Specifications

  • Battery Model: SigmasTek SP12-5.5HR
  • Quantity: 20 batteries included
  • Voltage: 12 Volts
  • Capacity: 5.5 AH (Amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Feature: Low Self-discharge
  • Feature: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility: Designed for Eaton Powerware 103003438-5501 UPS
  • Installation Note: Use all existing cables and hardware from original configuration to connect the new UPS batteries

Benefits

  • Durability and Dependability — These SigmasTek cells use valve regulated, spill-proof construction and high vibration resistance to withstand transport, rack mounting, and the operational stresses of UPS installations. The robust construction helps ensure a long-lasting battery life under normal operating conditions.
  • High-Performance Output — Specifically engineered as a high rate discharge design, this set functions as a high-performance UPS battery capable of supplying elevated current for short durations when your Eaton Powerware 103003438-5501 needs peak power to support critical loads.
  • Low Maintenance and Safety — With low self-discharge characteristics and U.L. recognition plus CE certification, these batteries offer safer, lower-maintenance operation for mission-critical systems and professional environments.
  • Typical Applications — Ideal for Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery-powered tools that require reliable short-term power delivery. This replacement UPS battery set is a great fit for data centers, telecom closets, and industrial backup systems that use the specified Eaton Powerware model.
  • Tested to OEM Standards — Each battery is factory fresh and tested by our technical staff to ensure it meets or exceeds OEM performance expectations for the Eaton Powerware 103003438-5501, giving you confidence that you’re getting a high-quality replacement UPS battery.

Ready to upgrade your Eaton Powerware 103003438-5501 with a trusted, long-lasting battery solution? Order this high-performance, replacement UPS battery set today and benefit from fast shipping on in-stock items, backed by our one-year warranty and expert support. Purchase now to secure reliable backup power when it matters most.



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