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-4264

APC BACKUPS CS BK350 UPS Compatible Replacement Battery 5.25 lb

11% off
New arrival
Sale price $33.99 USD Regular price $37.99
Shipping calculated at checkout.
Advanced AGM technology for steady, reliable power
High rate discharge design ideal for UPS and tool use
Maintenance-free and spill-proof for easy maintenance
U.L. recognized and CE certified for safety
Compatible with APC BACKUPS CS BK350, 1-year warranty
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 APC BACKUPS CS BK350 Battery — Compatible with APC BACKUPS CS BK350

Ensure uninterrupted operation of your APC BACKUPS CS BK350 with this specially matched replacement UPS battery. Designed to meet or exceed OEM SLA performance, this unit restores full backup capability to your UPS and helps protect critical devices during outages. For users seeking a dependable, high-performance UPS battery that is maintenance-free and safety-certified, this replacement delivers.

Key Specifications

  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 7.5 Ah
  • Terminal Type: F2
  • Battery Type: Sealed Lead Acid (SLA) with Absorbent Glass Mat (AGM) Technology
  • Design: High Rate Discharge Design
  • Maintenance: Maintenance-Free with Spill Proof Construction
  • Safety/Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatible Model: APC BACKUPS CS BK350

Benefits

This replacement UPS battery is engineered for durability and dependable performance. AGM construction and high-rate discharge capability enable reliable power delivery during surges and outages, making it a preferred long-lasting battery for UPS systems. The maintenance-free, spill-proof design simplifies installation and reduces servicing concerns, while U.L. and CE certifications confirm adherence to recognized safety standards.

Ideal for UPS backup, emergency power applications, and battery-powered tools, the SigmasTek 12V 7.5Ah F2 battery provides the steady power your devices require. It is a high-performance UPS battery that restores the runtime and protection of your APC BACKUPS CS BK350 without compromise. The unit ships brand new and factory fresh and includes a 1-year warranty for added assurance.

Practical benefits include immediate compatibility with the APC BACKUPS CS BK350, reduced maintenance overhead, and safe, leak-resistant handling thanks to spill-proof construction. For businesses and homeowners alike, this replacement UPS battery offers an economical and reliable way to maintain uninterrupted protection.

Don’t leave your equipment unprotected. Purchase this compatible, long-lasting replacement UPS battery for the APC BACKUPS CS BK350 today and ensure continuous power protection when you need it most.

Technical Specifications

Voltage12 Volts
Amp Hours7.5 Ah
Terminal TypeF2
Length (in.)5.95
Width (in.)2.56
Height (in.)3.7
Weight (lb.)5.25

Product Highlights

  • Brand Replacement : APC BACKUPS
  • 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.