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-4275

APC BACKUPS BK420C UPS High Performance Replacement Battery 5.25 lb

11% off
New arrival
Sale price $33.99 USD Regular price $37.99
Shipping calculated at checkout.
Absorbent Glass Mat (AGM) technology for leak-proof performance
High rate discharge design ensures reliable power delivery
Maintenance-free with spill-proof construction for safety
U.L. recognized and CE certified for quality assurance
Compatible replacement with 1-year warranty for peace of mind
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 BK420C Battery — Compatible with APC BACKUPS BK420C

Ensure uninterrupted power for your APC BACKUPS BK420C with this compatible replacement UPS battery, engineered for dependable performance and safe operation. Meeting or exceeding OEM SLA specifications, this high-performance UPS battery is an excellent replacement option for restoring backup capability to your APC BACKUPS BK420C unit. It’s a long-lasting battery solution that balances safety certifications, maintenance-free convenience, and reliable discharge performance.

Key Specifications

  • Compatible Model: APC BACKUPS BK420C
  • Battery Type: Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Design: High Rate Discharge Design
  • Maintenance: Maintenance-Free Design with Spill Proof Construction
  • Safety Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Brand: SigmasTek
  • Voltage: 12 Volts
  • Capacity: 7.5 Ah
  • Terminal Type: F2
  • Primary Applications: Emergency Power Supply, Battery Powered Tools

Benefits

This replacement UPS battery offers robust protection through its AGM construction, which provides a sealed, maintenance-free energy source that resists spills and reduces the need for regular servicing. The high rate discharge design supplies the instantaneous power necessary to support critical loads during an outage, making it a high-performance UPS battery for both professional and home environments.

Safety and quality are emphasized with U.L. recognition and CE certification. Shipped brand new and factory fresh and protected by a 1 Year Warranty, this unit offers reassurance and reliable performance over its service life. As a long-lasting battery alternative, it reduces the frequency of replacements while maintaining steady output for essential equipment.

Ideal applications include UPS backup for computers and networking gear, emergency power supply for communication devices, and use with battery-powered tools needing SLA power. The 12 Volts, 7.5 Ah rating and F2 terminal configuration make it a direct fit for APC BACKUPS BK420C installations.

Ready to secure dependable backup power? Buy this replacement UPS battery for your APC BACKUPS BK420C today and benefit from a high-performance, long-lasting battery backed by safety certifications and a 1 Year Warranty.

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.