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SigmasTek  |  SKU: BW-2534

APC Back-UPS RS BR1100CI UPS High Performance Replacement Battery Set

Sale price $49.99 USD Regular price $72.45
Shipping calculated at checkout.

➤ Includes 2 SigmasTek SP12-9HR batteries (12V 9AH), brand new

➤ High rate discharge design for short bursts of high power

➤ Valve regulated, spill-proof construction prevents leaks

➤ Low self-discharge and vibration resistant for durability

➤ Tested to 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.

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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 APC Back-UPS RS BR1100CI — SigmasTek SP12-9HR (2-Pack)

Bring your APC Back-UPS RS BR1100CI back to peak backup performance with this replacement UPS battery set. The kit includes two SigmasTek SP12-9HR batteries (12 Volts, 9 AH) that deliver consistent, reliable power during outages and voltage disturbances. Designed as a high-performance UPS battery option, these brand new batteries are tested for quality and safety. Installation requires reuse of all existing cables and hardware from your original battery assembly.

Key Specifications

  • Included: 2 x SigmasTek SP12-9HR batteries
  • Voltage: 12 Volts
  • Capacity: 9 AH (amp-hours)
  • 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

Benefits

This replacement battery pack is built to restore fast-response backup and protect your APC Back-UPS RS BR1100CI from unexpected power interruptions. The high rate discharge design provides the additional current needed during short-duration high-load events, ensuring sensitive equipment remains powered long enough for safe shutdowns or emergency operation. Low self-discharge and valve regulated construction offer maintenance-friendly reliability and improved safety handling compared to flooded-cell alternatives. High vibration resistance further increases longevity in environments with movement or mechanical stress.

Use these batteries across common applications such as Uninterruptible Power Supply (UPS) units for home and small business equipment, emergency power systems that keep critical devices online, and battery-powered tools where short bursts of reliable power are required. As a high-performance UPS battery, this SigmasTek 2-pack is tested by technical staff to meet strict performance standards and provide a long-lasting battery solution for your protected loads.

Orders for in-stock units typically ship within 24 hours. If you have questions about fitment or installation, our customer support team is available at to help. Remember to reuse the existing cables and hardware from your original setup to hook up the replacement batteries.

Don’t wait until the next outage—buy this replacement UPS battery set for the APC Back-UPS RS BR1100CI today to restore dependable backup power and enjoy the performance and protection of a long-lasting battery backed by a 1 Year Warranty.


Payment & Security

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