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-0041

APC S400X93 High Performance Replacement Battery By SigmasTek 25.32 lb

19% off
New arrival
Sale price $113.99 USD Regular price $140.99
Shipping calculated at checkout.
Compatible with APC S400X93 UPS
12V 18Ah capacity for extended backup
Trusted SigmasTek brand quality
Nut and bolt (NB) terminal for secure installation
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 | 18 Ah

Terminal Type

Nut & Bolt

SigmasTek 12V 18Ah Replacement Battery — Compatible with APC S400X93

Keep your APC S400X93 UPS running at peak readiness with this SigmasTek 12V 18Ah replacement UPS battery. Built to deliver dependable backup power when outages occur, this high-performance UPS battery is specifically engineered for direct compatibility with the APC S400X93 and offers reliable performance and easy installation. If you need a long-lasting battery solution to protect servers, workstations, networking gear, or critical home-office equipment, this SigmasTek unit provides trusted backup power you can count on.

Key Specifications

  • Compatibility: Specifically designed for APC S400X93
  • Voltage: 12 volts
  • Capacity: 18 amp hours (18Ah)
  • Terminal Type: NB (Nut & Bolt)
  • Brand: SigmasTek
  • Installation: Easy installation with NB terminal

Benefits

This SigmasTek replacement UPS battery delivers durable, consistent performance to help your APC S400X93 maintain uninterrupted operation. As a high-performance UPS battery designed for frequent cycle use, it offers excellent charge acceptance and dependable discharge characteristics for extended backup runtime. The robust construction and quality control behind the SigmasTek name contribute to longevity and reliability, making it a long-lasting battery option for both home and business environments.

Typical applications include UPS backup for small servers and network equipment, emergency power for home-office setups, and reliable reserve power for point-of-sale systems and communications equipment. The NB (Nut & Bolt) terminal ensures a secure connection that resists vibration and loosening, which is especially useful in rack-mounted or mobile installations. Whether you are replacing an old battery or stocking spares for scheduled maintenance, this unit restores capacity quickly and safely.

Choosing a certified replacement UPS battery like this SigmasTek model helps maintain the safety features and runtime specifications of your APC S400X93. It is ideal for IT professionals, facilities managers, and homeowners who demand dependable backup power without complications. Install with confidence and enjoy smoother transitions during power disturbances.

Ready to upgrade your UPS backup and secure continued protection for your APC S400X93? Add this SigmasTek 12V 18Ah high-performance, long-lasting battery to your cart today and ensure uninterrupted operation when it matters most.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Length (in.)7.13
Width (in.)3.0
Height (in.)6.59
Weight (lb.)25.3

Product Highlights

  • Brand Replacement : APC S400X93
  • 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.