Welcome to our store. Proudly serving customers across North America for years. Learn more

For support or quotes: sales@batteryweb.com

WELCOME5
Enersys  |  SKU: BW-1906

Enersys 12HX505 UPS High Performance Replacement Battery 103.09 lb

14% off
New arrival
Sale price $684.99 USD Regular price $800.99
Shipping calculated at checkout.
High-rate discharge technology for UPS reliability
Extended life with low self-discharge and 300 cycle capacity
Spill-proof and leak-free for versatile installation
UL94 V-0 flame retardant ABS casing
Freshly manufactured and UL listed with warranty protection
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 | 145 Ah

Terminal Type

Internal Thread

Replacement Enersys 12HX505 UPS Battery — Compatible with Enersys 12HX505

This compatible replacement Enersys 12HX505 UPS battery delivers reliable compatibility, exceptional performance, and proven reliability for critical backup systems. Designed as a replacement UPS battery with a high-rate discharge design, this Enersys 12HX505 unit provides consistent power delivery for UPS systems, emergency systems, and demanding cycle applications. If you need a high-performance UPS battery that performs under load and is built to last, the Enersys 12HX505 replacement offers the long-lasting battery performance your equipment depends on.

Key Specifications

  • Model: Enersys 12HX505
  • Battery Type: Rechargeable sealed lead acid battery
  • Design: High-rate discharge design
  • Watts per Cell: 491 Watts per cell on 15-min rate at 1.67 Volts
  • Voltage: 12 Volts
  • Capacity: 145 Ah
  • Terminal: Internal Thread
  • Technology: Absorbent Glass Mat (AGM)
  • Case: ABS (UL94 V-0) flame retardant case
  • Construction: Spill proof, no-leak construction, can be operated in any position
  • Self-discharge: Less than 3% per month
  • Standby Life Expectancy: Up to 10 years in standby use
  • Cycle Life: Up to 300 cycles at 100% discharge in cycle service
  • Warranty: 3 Year Warranty
  • Certifications: UL Listed
  • Condition: Brand New, Factory Fresh
  • Manufacturer Brand Reference: Enersys

Benefits

Built for durability and dependable service, this replacement Enersys 12HX505 is engineered to be a long-lasting battery solution for mission-critical environments. The AGM construction and flame-retardant ABS case deliver enhanced safety, leak resistance, and robust physical protection. With a self-discharge rate under 3% per month and up to 10 years expected standby life, this battery is ideal where reliability and low maintenance are required. As a high-performance UPS battery, it supports peak loads with a high-rate discharge profile and the specified 491 Watts per cell on the 15-minute rate, ensuring stable output during power interruptions.

Typical applications include UPS systems, emergency backup power, telecom cabinets, data centers, medical equipment backup, and portable power tools and systems that demand dependable rechargeability and cycle resilience. The battery’s ability to withstand up to 300 cycles at full discharge makes it suitable for both standby and cyclic use, offering flexibility across applications. Because it is spill-proof and operable in any position, installation options are simplified and safer for enclosed environments.

Our replacement batteries are professionally tested and packaged to meet strict quality control standards, so you receive a brand new, factory fresh unit with UL listing and a 3 year warranty. When you need a replacement UPS battery that combines safety, performance, and long service life, the Enersys 12HX505 is an excellent choice.

Ready to replace your UPS battery? Buy this replacement Enersys 12HX505 high-performance UPS battery today for a reliable, long-lasting battery solution — orders for in-stock items typically ship within 24 hours. Purchase now and secure dependable backup power.

Technical Specifications

Voltage12 Volts
Amp Hours145 Ah
Terminal TypeInternal Thread
Length (in.)13.3
Width (in.)6.8
Height (in.)10.7
Weight (lb.)103.0

Product Highlights

  • Brand Replacement : Enersys 12HX505
  • Manufacturer: Enersys
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • 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.