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SigmasTek  |  SKU: BW-4496

SL Waber UpStart Network 550 UPS High Performance Replacement Battery Set

Sale price $20.87 USD Regular price $26.36
Shipping calculated at checkout.

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

➤ High rate discharge construction for UPS and emergency use

➤ Valve regulated spill-proof design ensures safety

➤ Low self-discharge and vibration resistance enhance durability

➤ Certified with U.L. and CE marks and 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

Replacement SigmasTek SP12-5.5HR Battery Set for SL Waber UpStart Network 550 UPS

Restore dependable runtime and peak performance for your SL Waber UpStart Network 550 with this brand new replacement UPS battery set. Designed specifically for the SL Waber UpStart Network 550, these batteries deliver reliable power, fast discharge capability, and the confidence of factory-fresh components. If your UPS is showing low battery warnings or reduced backup time, this replacement UPS battery set provides a straightforward way to renew your system’s protection and ensure your equipment stays online when it matters most.

Key Specifications

  • Included: 2 x SigmasTek SP12-5.5HR batteries
  • Voltage: 12 Volts
  • Capacity: 5.5 AH (amp-hours)
  • Battery Model: SP12-5.5HR
  • Quantity: Set of 2
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Terminal: F2 (as specified)
  • Compatibility: SL Waber UpStart Network 550 UPS

Benefits

This replacement battery pair is engineered for demanding UPS environments where a high rate discharge is required for short, powerful output bursts. As a high-performance UPS battery designed for the SL Waber UpStart Network 550, it offers superior performance and consistent voltage under load, making it an excellent choice for protecting servers, network gear, and critical electronics. The valve regulated, spill-proof construction and low self-discharge characteristics mean these cells remain ready for use after storage and resist leakage and maintenance needs.

Durability is built in: high vibration resistance helps protect battery life in rack-mounted or transport-prone installations, and the U.L. recognition plus CE certification confirm safety and regulatory compliance. Whether you need a replacement for routine maintenance or to extend the life of an aging UPS, these long-lasting battery units give you dependable reserve power. Typical applications include Uninterruptible Power Supply (UPS) units, emergency power systems, and various battery-powered tools that require a steady, reliable source of energy.

Our technically savvy team individually tests each replacement to ensure it meets or exceeds OEM specifications. Please note: you must reuse all original cables and hardware from your SL Waber UpStart Network 550 to connect the new batteries. This set is sold as a replacement UPS battery solution to restore full functionality quickly and affordably.

Buy this high-performance UPS battery set for the SL Waber UpStart Network 550 today to secure long-lasting battery backup and reliable protection for your critical systems. Order now and enjoy fast shipping on in-stock items.



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