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-2000

APC SMART-UPS POWERSTACK 450VA High Performance UPS Replacement Battery Set 6.05 lb

21% off
New arrival
Sale price $38.78 USD Regular price $48.98
Shipping calculated at checkout.
Includes 2 brand new SigmasTek SP6-9HR batteries (6V 9AH) for APC SMART-UPS POWERSTACK 450VA
High rate discharge design for reliable emergency power
Valve regulated, spill-proof construction prevents leaks
Low self-discharge keeps batteries ready for use
Certified quality and 1 year warranty for dependable performance
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

6 Volts | 9 AH

Terminal Type

F2

SigmasTek SP6-9HR Replacement Battery Set for APC SMART-UPS POWERSTACK 450VA

Renew your APC SMART-UPS POWERSTACK 450VA with this dependable replacement UPS battery set. The package contains 2 SigmasTek SP6-9HR batteries (6 Volts, 9 AH) engineered for high-rate discharge to handle short bursts of power demand. This high-performance UPS battery set is factory-fresh, certified, and tested to help restore run-time and reliability for your PowerStack 450VA unit.

Key Specifications

  • Brand: SigmasTek
  • Model: SP6-9HR
  • Quantity: 2 batteries per set
  • Voltage: 6 Volts
  • Capacity: 9 AH (Amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated, Spill Proof
  • 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 Warranty
  • Applications: Uninterruptible Power Supply (UPS) Units; Emergency Power Supply; Battery Powered Tools
  • Installation Note: Use all existing cables and hardware from original configuration to connect replacements

Benefits

  • Durability: The valve-regulated, spill-proof construction and robust vibration resistance make these batteries suitable for stacked and compact UPS designs like the PowerStack 450VA.
  • Long Life: Low self-discharge characteristics and brand-new manufacturing provide a long-lasting battery replacement that remains ready for service after storage.
  • High Performance: Designed for high-rate discharge scenarios, these batteries deliver the quick energy spikes required by UPS systems during transitions and short outages, making them an excellent high-performance UPS battery choice.
  • Compliance & Safety: U.L. recognition and CE certification ensure compatibility with industry safety standards and professional installations.
  • Multiple Uses: Optimized for UPS units, emergency backup systems, and battery-powered tools — this replacement UPS battery set is versatile for various backup power needs.
  • Easy Swap-In: The set is intended to replace original cells; continue to use your existing cables and mounting hardware for a simple installation process.
  • Tested Reliability: Each battery is inspected and tested to meet or exceed OEM specifications so your APC SMART-UPS POWERSTACK 450VA performs reliably in critical moments.

Ready to secure uninterrupted protection? Buy this replacement UPS battery set for your APC SMART-UPS POWERSTACK 450VA now and get a long-lasting battery that delivers high-performance backup power. Orders for in-stock items typically ship within 24 hours — purchase today to maintain continuous protection for your equipment.

Technical Specifications

Voltage6 Volts
Amp Hours9 AH
Terminal TypeF2
Length (in.)5.94
Width (in.)1.34
Height (in.)3.7
Weight (lb.)6.04

Product Highlights

  • Brand Replacement : APC SMART-UPS
  • 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.