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SigmasTek  |  SKU: BW-2413

Liebert Nfinity 8kVA XR UPS High Performance Compatible Replacement Battery Set

Sale price $1,236.99 USD Regular price $1,811.31
Shipping calculated at checkout.

➤ Set of 50 brand new SigmasTek SP12-9HR batteries (12V 9AH)

➤ High rate discharge for Liebert Nfinity 8kVA XR UPS systems

➤ Valve regulated spill-proof battery design

➤ Low self-discharge for extended storage life

➤ U.L. recognized, CE certified, 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 | 9 AH

Terminal Type

F2

Replacement Battery Set for Liebert Nfinity 8kVA XR Uninterruptible Power Supply (UPS)

Get dependable power restoration for your Liebert Nfinity 8kVA XR with this comprehensive replacement UPS battery set. Built to deliver consistent performance and engineered for high-rate discharge applications, these SigmasTek SP12-9HR batteries are an ideal choice for large UPS strings that support critical infrastructure. When uptime matters, this replacement set helps ensure your Liebert Nfinity 8kVA XR continues to protect servers, networking gear, and other essential loads.

Key Specifications

  • Battery model: SigmasTek SP12-9HR
  • Voltage: 12 Volts
  • Capacity: 9 AH (amp-hours)
  • Number of batteries in set: 50
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Performance features: Low Self-discharge; High Vibration Resistance; Superior Performance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year
  • Installation note: Use all existing cables and hardware from original configuration to connect the new UPS batteries

Benefits

This high-capacity replacement pack is tailored for high-performance UPS battery installations where many cells are required to reach the system voltage and runtime targets of an 8kVA XR. The high rate discharge design ensures the batteries can supply surges and transient demands during transfer events, while low self-discharge preserves capacity during storage and staging. Valve regulated spill proof construction simplifies maintenance and reduces the risk of leakage during installation and service.

Engineered for durability, the batteries offer high vibration resistance—important in environments with ambient mechanical activity or when racks are accessed frequently. U.L. recognition and CE certification provide the assurance of recognized safety and manufacturing standards. Because these are brand new, factory fresh cells, they deliver predictable, repeatable performance right out of the box and are tested to meet or exceed OEM expectations for the Liebert Nfinity 8kVA XR.

Common use cases include Uninterruptible Power Supply units, emergency power systems, and battery-powered tools that require temporary high output. For data center managers and service teams replacing an entire battery string, this long-lasting battery option presents a practical mix of performance, safety, and value.

Replace your Liebert Nfinity 8kVA XR batteries with confidence—order this replacement UPS battery set today to restore protection and ensure continued uptime.


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