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SigmasTek  |  SKU: BW-4500

SL Waber 550T UPS High Performance Replacement Battery Set

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

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

➤ High rate discharge design for stable UPS performance

➤ Valve regulated spill-proof construction for safe use

➤ Low self-discharge rate and vibration resistance for durability

➤ Certified by U.L. and CE 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

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

Revive your SL Waber 550T UPS with this reliable, brand new replacement UPS battery set. These SigmasTek SP12-5.5HR batteries are engineered to deliver consistent, high-rate discharge performance and are supplied factory fresh to ensure dependable, long-lasting backup power. If your 550T is signaling reduced runtime or diminished capacity, this replacement UPS battery set is a direct and effective solution.

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 550T UPS

Benefits

Specifically designed for UPS applications requiring short bursts of higher current, this replacement battery set provides the reliable output necessary for protecting vital equipment connected to the SL Waber 550T. The high-performance UPS battery design ensures steady voltage delivery under load, while valve-regulated, spill-proof construction offers maintenance-free reliability. Low self-discharge keeps these batteries ready for service even after extended storage periods.

High vibration resistance contributes to longer service life in environments with movement or mechanical stress. U.L. and CE certifications validate safety and performance standards, and the brand-new condition guarantees you’re installing fresh components with predictable lifespan. Typical uses include Uninterruptible Power Supply (UPS) systems, emergency power supplies, and battery-powered tools that depend on quick, dependable energy delivery.

Each battery is individually tested by knowledgeable technicians to confirm it meets or exceeds OEM performance. Be sure to reuse all cables and hardware from your original SL Waber 550T configuration when installing these replacement batteries. This replacement UPS battery pack is a practical way to extend the life of your UPS and keep critical systems protected.

Ready to secure dependable backup power for your SL Waber 550T? Order this long-lasting, high-performance UPS battery set today and take advantage of fast shipping for in-stock items.



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