Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com

WELCOME5
SigmasTek  |  SKU: BW-3648

APC Back-UPS RS RS900 UPS High Performance Replacement Battery Set 10.51 lb

25% off
New arrival
Sale price $53.99 USD Regular price $71.99
Shipping calculated at checkout.
Includes 2 SigmasTek SP12-7.5HR batteries (12 Volts, 7.5 AH)
High discharge rate ideal for APC Back-UPS RS RS900 UPS applications
Spill-proof valve regulated design prevents leaks and maintenance needs
Low self-discharge and vibration resistance enhance durability
Certified quality with a 1-year warranty and factory fresh condition
In stock

— Ready to ship immediately

Free shipping

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 | 7.5 Ah

Terminal Type

F2

Replacement Battery Set for APC Back-UPS RS RS900 — SigmasTek SP12-7.5HR Compatible

Restore trusted backup power to your APC Back-UPS RS RS900 with this brand new replacement UPS battery set. Designed to be compatible with the APC Back-UPS RS RS900, the package includes two SigmasTek SP12-7.5HR batteries (12 Volts, 7.5 AH) that are factory fresh and tested to meet or exceed OEM specifications. Installation requires reusing the existing cables and hardware from your original UPS to ensure proper connection and safety.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-7.5HR
  • Quantity: 2 batteries per set
  • Voltage: 12 Volts
  • Amp-hours: 7.5 AH
  • Terminal: F2 (as listed)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated, Spill Proof Construction
  • Features: Low Self-discharge
  • Features: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Installation: Requires use of existing cables and hardware from original configuration

Benefits

This replacement UPS battery set delivers exceptional longevity and dependable output for your APC Back-UPS RS RS900. The high rate discharge design ensures quick delivery of power during sudden loads, making it a reliable high-performance UPS battery option. Valve regulated, spill-proof construction reduces maintenance and improves safety in confined equipment spaces, and high vibration resistance helps the batteries withstand typical operational conditions.

Whether you need backup for home office servers, emergency lighting and systems, or battery powered tools, these batteries offer a long-lasting battery solution that keeps equipment protected. Low self-discharge maintains charge during storage and periods of infrequent use, helping ensure the batteries are ready when needed. Certified by U.L. and CE standards, the set offers quality assurance along with a 1 year warranty for added confidence.

Don’t let depleted batteries compromise your UPS. Buy this replacement UPS battery set for the APC Back-UPS RS RS900 today to restore runtime and protect your devices — order now for fast shipping and reliable service.

Technical Specifications

Voltage12 Volts
Amp Hours7.5 Ah
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)10.5

Product Highlights

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

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • 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.