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-4249

APC BACK-UPS ES BK500BLK UPS Compatible Replacement Battery 5.25 lb

24% off
New arrival
Sale price $33.99 USD Regular price $44.99
Shipping calculated at checkout.
Absorbent Glass Mat (AGM) technology for enhanced durability
High rate discharge design supports emergency power needs
Maintenance-free and spill-proof construction for safety
U.L. recognized and CE certified for guaranteed quality
1-year warranty ensures reliable, factory-fresh performance
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

SigmasTek 12V 7.5Ah F2 Replacement Battery for APC BACK-UPS ES BK500BLK

Designed for exact fit and reliable operation with the APC BACK-UPS ES BK500BLK, this replacement UPS battery offers a dependable, cost-effective alternative to OEM packs. The SigmasTek 12V 7.5Ah F2 battery meets or exceeds SLA specifications to provide consistent runtime and dependable recharge behavior. If continuity of power is essential for your BK500BLK, this long-lasting battery is engineered to keep your protected equipment running smoothly.

Key Specifications

  • Brand: SigmasTek
  • Compatible UPS Model: APC BACK-UPS ES BK500BLK
  • Battery Type: SLA (Sealed Lead Acid)
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Voltage: 12 Volts
  • Capacity: 7.5 Ah
  • Terminal Type: F2
  • Design: High Rate Discharge Design
  • Maintenance: Maintenance-Free Design with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Application Notes: Replacement battery for APC BACK-UPS ES BK500BLK

Benefits

Engineered for durability, the SigmasTek replacement battery uses AGM technology for a sealed, maintenance-free experience. Its spill-proof construction reduces installation constraints and enhances safety in confined workspaces. The high rate discharge design provides reliable burst power during outages, enabling connected devices to continue operating or to shut down safely.

As a high-performance UPS battery, it supports frequent use and consistent recharge cycles, delivering the kind of dependability required in both home and small business settings. The unit’s certified status (U.L. and CE) reinforces confidence in its manufacturing and quality control. Customers will appreciate the long-lasting battery attributes and the 1 year warranty that accompanies the product.

This battery is ideal for UPS backup, emergency power supply systems, and battery-powered tools that require a compact 12V solution. It restores the APC BACK-UPS ES BK500BLK to original performance levels without the premium price of OEM replacements.

Ready to upgrade? Buy this replacement UPS battery for APC BACK-UPS ES BK500BLK now and protect your equipment with a proven, long-lasting power solution.

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 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.