Welcome to our store. Proudly serving customers across North America for years. Learn more

For support or quotes: sales@batteryweb.com

WELCOME10
SigmasTek  |  SKU: BW-4365

APC SRT1000RMXLA UPS High Performance Replacement Battery Set 28.03 lb

21% off
New arrival
Sale price $83.46 USD Regular price $105.42
Shipping calculated at checkout.
Replacement set with 8 SigmasTek SP12-5.5HR batteries (12V 5.5AH)
High rate discharge design ideal for UPS power demands
Valve regulated, spill-proof batteries for safe operation
Low self-discharge technology extends battery life
Superior performance with factory fresh quality and 1 year warranty
In stock

— Ready to ship immediately


Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe

Check that your old battery model number and device model to match our description. This makes sure they work together.


We ship your order same day if you buy it before 4 PM EST.

Send Your Battery Photo

Expert Technician 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 BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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.


Volts & Amps

12 Volts | 5.5 Ah

Terminal Type

F2

Replacement Battery Set for APC SRT1000RMXLA UPS (8 x SigmasTek SP12-5.5HR)

Restore reliable backup power to your APC SRT1000RMXLA with this compatible replacement UPS battery kit. The set includes eight SigmasTek SP12-5.5HR batteries designed for high-rate discharge performance, delivering immediate and dependable power for critical loads. These factory fresh batteries offer safe, maintenance-friendly construction and the consistent output required for protecting servers, telecom gear, and emergency systems.

Key Specifications

  • Battery Brand: SigmasTek
  • Battery Model: SP12-5.5HR
  • Quantity: 8 batteries (replacement set)
  • Voltage: 12 Volts
  • Capacity: 5.5 AH (Amp-hours)
  • Terminal Type: F2
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge, High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

This high-performance UPS battery kit provides durability, dependable operation, and extended service life. The high-rate discharge design supports short-term high-power demands, while valve-regulated, spill-proof construction increases safety and reduces maintenance needs. Low self-discharge ensures batteries hold charge during storage, and high vibration resistance keeps them stable in rack-mounted systems or environments with movement.

As a replacement UPS battery option, this set is well suited for uninterruptible power supply units, emergency power systems, and battery-powered tools that require fast and reliable power delivery. Each battery is factory fresh and tested to meet or exceed OEM standards. Keep in mind installation requires reuse of existing cables and hardware from your APC SRT1000RMXLA.

If you want a long-lasting battery upgrade that restores the protection and runtime of your UPS quickly, this SigmasTek set is a cost-effective and reliable choice. In-stock orders typically ship within 24 hours so you can minimize downtime.

Act now—purchase this replacement UPS battery set for the APC SRT1000RMXLA and ensure continuous protection for your critical equipment.

Technical Specifications

Voltage12 Volts
Amp Hours5.5 Ah
Terminal TypeF2
Length (in.)3.54
Width (in.)2.76
Height (in.)3.98
Weight (lb.)28.0

Product Highlights

  • Brand Replacement : APC SRT1000RMXLA
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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.