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-5157

Alpha Technologies UPS 1500 High Performance UPS Replacement Battery Set 50.64 lb

23% off
New arrival
Sale price $216.99 USD Regular price $279.99
Shipping calculated at checkout.
Includes 4 brand new SigmasTek 12V 18AH batteries for Alpha Technologies UPS 1500
High rate discharge design for dependable UPS power delivery
Valve regulated, spill-proof for safe installation and operation
Low self-discharge extends battery life during storage
Certified quality with 1-year warranty included
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

Replacement Battery Set for Alpha Technologies UPS 1500 - SigmasTek SP12-18HR (4-Pack)

Restore optimal runtime and dependable backup power for your Alpha Technologies UPS 1500 with this premium replacement UPS battery set. The kit includes four SigmasTek SP12-18HR batteries (12 Volts, 18 AH) designed for reliable, high-rate discharge performance. These brand new, factory-fresh batteries provide a long-lasting battery option for critical systems and are ideal when you need a high-performance UPS battery to maintain uptime. Important: you must reuse all existing cables and hardware from your original battery configuration to connect the new batteries.

Key Specifications

  • Included Batteries: 4 x SigmasTek SP12-18HR
  • Voltage: 12 Volts
  • Capacity: 18 AH
  • Terminal Type: Nut & Bolt
  • Brand: SigmasTek
  • Compatible With: Alpha Technologies UPS 1500
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Additional Features: Low Self-discharge; High Vibration Resistance; Superior Performance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

This replacement UPS battery pack delivers rugged reliability and extended service life. The high-rate discharge capability makes it a top choice for UPS units that must supply higher power for short durations, while valve-regulated, spill-proof construction reduces maintenance and improves safety. Low self-discharge helps protect the battery during standby periods, and high vibration resistance ensures stable operation in rack-mounted or mobile environments. These features combine to provide a high-performance UPS battery that stands up to demanding use and delivers consistent results.

Use cases include Uninterruptible Power Supply (UPS) installations, emergency power systems, and battery-powered tools where reliable energy delivery is required. The SigmasTek SP12-18HR cells are factory tested to ensure they meet or exceed OEM specifications, offering a long-lasting battery replacement that helps minimize downtime and protect sensitive electronics. With recognized U.L. and CE certifications and a manufacturer-backed 1 year warranty, this kit gives you trusted backup power for your Alpha Technologies UPS 1500.

We ship in-stock items quickly—typically within 24 hours—and our knowledgeable support team is ready to help with installation guidance or compatibility questions. Remember to reuse your original cables and hardware for proper connection.

Don’t wait until your UPS can’t protect critical equipment. Purchase this replacement UPS battery 4-pack for your Alpha Technologies UPS 1500 now and secure a reliable, long-lasting battery solution.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Length (in.)7.13
Width (in.)3.0
Height (in.)6.59
Weight (lb.)50.6

Product Highlights

  • Brand Replacement : Alpha Technologies
  • 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.