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-5517

APC Back-UPS 650 BK650S High Performance UPS Replacement Battery 7.28 lb

16% off
New arrival
Sale price $47.99 USD Regular price $56.99
Shipping calculated at checkout.
Fits APC Back-UPS 650 BK650S UPS units with OEM compatibility
Valve regulated, spill-proof AGM battery design
Low self-discharge for prolonged standby
High vibration resistance for dependable use
Brand new with 1 year warranty and certified quality
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 | 12 Ah

Terminal Type

F2

SigmasTek SP12-12 Replacement Battery for APC Back-UPS 650 BK650S

Ensure uninterrupted protection for your APC Back-UPS 650 BK650S with a premium replacement UPS battery that delivers on reliability and performance. The SigmasTek SP12-12 (12 Volts 12 AH) is crafted to provide a dependable power source for your BK650S, offering a high-performance UPS battery solution that restores runtime and keeps essential devices running through short-term outages. This replacement has been optimized for compatibility and endurance, making it an excellent choice for users seeking a long-lasting battery replacement for their APC UPS.

Key Specifications

  • Battery Model: SigmasTek SP12-12
  • Voltage: 12 Volts
  • Amp-Hours: 12 AH
  • Compatible UPS Model: APC Back-UPS 650 BK650S
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Self-Discharge: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

  • Robust Construction: Valve-regulated, spill-proof construction prevents leaks and simplifies maintenance, while high vibration resistance supports reliable operation in a variety of installations.
  • Reliable Performance: The high rate discharge design provides the extra power needed for transient heavy loads, delivering consistent uptime for the APC Back-UPS 650 BK650S in critical moments.
  • Long Service Life: Low self-discharge helps retain capacity over time ensuring the battery remains ready for duty, qualifying it as a long-lasting battery replacement option.
  • Safety Assured: U.L. recognition and CE certification indicate adherence to recognized safety and performance standards for UPS replacement batteries.
  • Multiple Uses: Ideal for UPS units, emergency power systems, and battery-powered tools that require dependable 12 V 12 AH performance.
  • Plug-and-Play Replacement: Designed for direct fit and function — retain your original cables and hardware to install quickly and safely.
  • Quality Tested: Each SigmasTek unit is tested to meet or exceed OEM standards so you can rely on it as a high-performance UPS battery for the BK650S.

Don’t leave your protection to chance — replace your APC Back-UPS 650 BK650S battery with the SigmasTek SP12-12 today. Purchase now to secure a long-lasting battery that restores full UPS functionality; in-stock orders typically ship within 24 hours.

Technical Specifications

Voltage12 Volts
Amp Hours12 Ah
Terminal TypeF2
Length (in.)5.95
Width (in.)3.86
Height (in.)3.7
Weight (lb.)7.27

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.