For questions, quotes, or help finding the right battery, feel free to email us at sales@batteryweb.com

New collections added! Learn more

🎉 First Order Special 🎉

First-time shoppers get 5% OFF on batteries & accessories!

WELCOME5
SigmasTek  |  SKU: BW-4457

APC SURT10000XLI Compatible Replacement UPS Battery Set

Sale price $369.99 USD Regular price $540.57
Shipping calculated at checkout.

➤ Includes 32 SigmasTek SP12-5.5HR batteries (12V 5.5AH) for APC SURT10000XLI

➤ High rate discharge for reliable short bursts of power

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

➤ Low self-discharge extends battery shelf life

➤ Certified to meet OEM specs 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.

📸 Send Your Battery Photo / Unsure? Expert Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR IMAGE

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

SigmasTek SP12-5.5HR Replacement Battery Set for APC SURT10000XLI

Restore full runtime and reliable protection for your APC SURT10000XLI with this premium replacement UPS battery set. The kit contains 32 SigmasTek SP12-5.5HR batteries, offering consistent 12 Volt power and dependable performance for critical loads. Whether you're safeguarding servers, telecommunications gear, or emergency systems, these brand new batteries deliver the stability and endurance you need from a long-lasting battery solution.

Key Specifications

  • Battery model: SigmasTek SP12-5.5HR
  • Quantity: 32 batteries
  • Voltage: 12 Volts
  • Capacity: 5.5 Ah (Amp-hours)
  • Terminal: F2
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated, Spill Proof
  • Self-discharge: Low Self-discharge
  • Vibration: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility: Replacement for APC SURT10000XLI UPS unit
  • Notes: Use existing cables and hardware from original configuration to connect new batteries

Benefits

  • Durability: Constructed for spill-proof operation with high vibration resistance, these batteries are suitable for robust data center and industrial UPS installations.
  • Long life: Low self-discharge and factory-fresh condition help maximize service life so you can rely on a long-lasting battery for critical uptime.
  • High performance: Engineered for high rate discharge, this replacement UPS battery set supplies the rapid power bursts needed during short, intense load events.
  • Safety and quality: U.L. recognition and CE certification ensure safety compliance and consistent quality across the battery set.
  • Typical applications: Perfect for Uninterruptible Power Supply (UPS) units like the APC SURT10000XLI, emergency power supply systems, and battery-powered tools that require dependable power delivery.
  • OEM-level testing: Each pack is tested to meet or exceed OEM specs so you can install with confidence.
  • Installation note: This kit reuses your existing cabling and hardware — a direct swap for the original battery configuration.

Don't wait until your UPS runtime degrades. Purchase this high-performance UPS battery pack for the APC SURT10000XLI today to ensure uninterrupted protection. Orders for in-stock items typically ship within 24 hours — secure your replacement now and benefit from a 1 year warranty.


Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.