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SigmasTek  |  SKU: BW-4370

APC SURT20KRMXLT-TF5 UPS High Performance Replacement Battery Set

Sale price $738.99 USD Regular price $1,081.11
Shipping calculated at checkout.

➤ Contains 64 SigmasTek SP12-5.5HR batteries (12V 5.5AH) for APC SURT20KRMXLT-TF5

➤ High rate discharge design for high power UPS demands

➤ Valve regulated, spill-proof construction ensures safety

➤ Low self-discharge keeps batteries ready over time

➤ Factory fresh with 1 year warranty and tested performance


📦🚀 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 SURT20KRMXLT-TF5

For large-scale backup systems like the APC SURT20KRMXLT-TF5, trust this comprehensive replacement UPS battery solution. This heavy-duty kit contains 64 SigmasTek SP12-5.5HR batteries (12 Volts, 5.5 AH) engineered to deliver the performance and reliability your large UPS requires. Whether you are servicing data center infrastructure or replacing an entire battery bank, these brand-new batteries restore capacity and ensure continued protection.

Key Specifications

  • Included batteries: 64 x SigmasTek SP12-5.5HR
  • Voltage: 12 Volts
  • Capacity: 5.5 AH
  • 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
  • Note: You must use all existing cables and hardware from your original configuration to connect the new UPS batteries
  • Brand: SigmasTek
  • Terminal: F2 (as listed)
  • Compatible UPS model: APC SURT20KRMXLT-TF5

Benefits

  • Robust construction: Valve-regulated, spill-proof cells with high vibration resistance are ideal for the rigors of large battery banks and rack systems.
  • Extended lifecycle: Low self-discharge and factory-fresh manufacturing help ensure a long-lasting battery investment for enterprise-class UPS systems.
  • High-rate performance: Designed specifically for high rate discharge UPS applications, this set delivers the burst power necessary during transfer and fault conditions.
  • Scalable reliability: A full 64-battery kit restores complete capacity for large-scale UPS installations such as the APC SURT20KRMXLT-TF5.
  • Quality tested: Technically trained staff test every replacement UPS battery set to meet or exceed OEM specifications for dependable system protection.
  • Wide applications: Suitable for Uninterruptible Power Supply (UPS) systems, emergency power supplies, and battery-powered tools where reliable backup energy is essential.
  • Installation-ready: Designed to integrate with your existing cables and hardware to minimize installation time and reduce service interruption.

Restore full backup capability to your APC SURT20KRMXLT-TF5 with this complete replacement UPS battery set. For a high-performance UPS battery and a long-lasting battery solution that supports enterprise demands, order your SigmasTek kit now and get fast shipment to keep your operations protected.


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