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SigmasTek  |  SKU: BW-4548

APC SURTD3KRMXL3U-TF5 UPS Compatible Replacement Battery Set

Sale price $184.99 USD Regular price $270.27
Shipping calculated at checkout.

➤ Includes 16 brand new SigmasTek SP12-5.5HR batteries for reliable replacement

➤ High rate discharge design delivers powerful output for UPS applications

➤ Valve regulated, spill-proof construction ensures safe and maintenance-free use

➤ Low self-discharge and high vibration resistance extend battery life and durability

➤ U.L. recognized and CE certified for superior quality and safety compliance


📦🚀 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 Battery Set for APC SURTD3KRMXL3U-TF5 — 16 x SigmasTek SP12-5.5HR (12V 5.5AH)

Restore full backup capability for your APC SURTD3KRMXL3U-TF5 with this brand new replacement battery set. This kit contains 16 SigmasTek SP12-5.5HR batteries (12 Volts, 5.5 AH) precisely matched to the needs of the UPS to ensure compatibility, consistent performance, and trusted reliability. Ideal for demanding environments where a high-rate discharge and dependable standby energy are required, this replacement UPS battery set is manufactured and tested to meet rigorous standards.

Key Specifications

  • Battery count: 16 batteries per set
  • Battery model: SigmasTek SP12-5.5HR
  • Voltage: 12 Volts
  • Capacity: 5.5 AH (amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge
  • Features: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Terminal/Identifier: F2 (as indicated in product reference)
  • Installation note: Must use all existing cables and hardware from original configuration to connect new UPS batteries

Benefits

This replacement UPS battery package is built for longevity and dependable performance. As a high-performance UPS battery solution, the SigmasTek SP12-5.5HR cells provide robust short-term discharge capability suited to surge demands, making them ideal for protecting servers, telecom equipment, and critical infrastructure. The valve-regulated spill-proof construction reduces maintenance and enhances workplace safety, while low self-discharge ensures batteries remain ready after storage or intermittent use. High vibration resistance further increases reliability in rack-mounted or transportable setups.

Each battery is factory fresh and undergoes quality checks to ensure it meets or exceeds OEM requirements. The product’s U.L. recognition and CE certification provide additional assurance for enterprise and professional installations. When you need a dependable, long-lasting battery replacement for the APC SURTD3KRMXL3U-TF5, this kit delivers the performance and safety you expect.

  • Typical applications: Uninterruptible Power Supply (UPS) units
  • Typical applications: Emergency power supply and backup systems
  • Typical applications: Battery powered tools and equipment requiring high discharge power

For assistance selecting or installing this replacement UPS battery for the APC SURTD3KRMXL3U-TF5, please contact our customer service at or e-mail us. Our technicians are available to help you ensure a smooth replacement process.

Get peace of mind and restore resilient backup power — order this high-performance, long-lasting replacement UPS battery set for your APC SURTD3KRMXL3U-TF5 now.


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