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SigmasTek  |  SKU: BW-4621

Hewlett Packard Compaq 204503-001 UPS Compatible Replacement Battery Set

Sale price $104.33 USD Regular price $131.77
Shipping calculated at checkout.

➤ Includes 10 brand new SigmasTek SP12-5.5HR batteries (12V 5.5AH)

➤ High rate discharge design for superior short-term power output

➤ Valve regulated, spill-proof construction for safety and reliability

➤ Low self-discharge ensures longer shelf life and readiness

➤ Tested to meet or exceed OEM specs 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.

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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 (10-Pack) Replacement for Hewlett Packard 204503001 UPS

Designed specifically for the Hewlett Packard 204503001 Uninterruptible Power Supply, this 10-pack of SigmasTek SP12-5.5HR batteries offers compatibility, dependable performance, and proven reliability for mission-critical systems. If your HP 204503001 needs fresh power for backup runtime, emergency power or high-rate discharge events, this replacement UPS battery set delivers the consistent output and robust construction required to keep your equipment protected. These brand new, factory-fresh batteries are quality tested to meet or exceed OEM expectations.

Key Specifications

  • Compatible UPS Model: Hewlett Packard 204503001
  • Battery Brand: SigmasTek
  • Battery Model: SP12-5.5HR
  • Quantity: 10 batteries per set
  • Voltage: 12 Volts
  • Capacity: 5.5 AH (Ampere-Hours)
  • Terminal Type: F2
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof
  • Features: Low Self-discharge, High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Installation Note: Use all existing cables and hardware from original configuration to connect new UPS batteries

Benefits

This high-performance UPS battery set is engineered for reliability and extended service life in demanding backup power environments. The high rate discharge design makes the SigmasTek SP12-5.5HR ideal when the Hewlett Packard 204503001 requires higher power output over short periods, while valve regulated spill proof construction ensures safe, maintenance-free operation. Low self-discharge helps preserve charge during storage, and high vibration resistance increases durability in rack and transport scenarios.

  • Durability: Robust construction and vibration resistance reduce failure risk in harsh environments.
  • Long life: Factory-fresh cells and controlled design deliver a long-lasting battery solution for UPS replacement needs.
  • High performance: Optimized for high rate discharge applications, providing stable power when it’s needed most.
  • Typical applications: Uninterruptible Power Supply (UPS) units, Emergency Power Supply systems, Battery Powered Tools, and other backup power installations.
  • Compatibility advantages: Directly supports Hewlett Packard 204503001 configurations when used with your existing cables and hardware.

Ready to replace the aging batteries in your Hewlett Packard 204503001? Order this high-performance, long-lasting battery set today and restore reliable backup power to your UPS. Our knowledgeable customer service team is available at to help with questions—buy your replacement UPS battery set with confidence now.



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