For questions, quotes, or help finding the right battery, feel free to email us at sales@batteryweb.com

New collections added! Learn more

🎉 First Order Special 🎉

First-time shoppers get 5% OFF on batteries & accessories!

WELCOME5
Enersys  |  SKU: BW-13308

Yuasa HX505-12FR High Performance Compatible UPS Replacement Battery

Sale price $582.20 USD Regular price $764.42
Shipping calculated at checkout.

➤ Compatible replacement for Yuasa HX505-12FR UPS battery

➤ Reliable 12-volt power output for uninterrupted backup

➤ High 145 Ah capacity ensures long-lasting performance

➤ Internal thread design for secure and easy installation

➤ Manufactured by trusted Enersys brand for quality assurance


📦🚀 FAST SHIPPING: Usually ships same day if ordered before 2 PM EST

⚠️ Quick Reminder

🔹 Please ensure the original battery model number is listed in our product description and that your device model number matches for compatibility.
🔹 We only supply the batteries shown in the images. Device images are provided for reference only.

📸 Send Your Battery Photo / Unsure? Expert 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 IMAGE

Battery Care Guide

Battery Usage and Maintenance Guidelines 🔋

Please read the following instructions carefully before using your new battery. Proper adherence will help ensure optimal performance and extended service life.

1. Cordless Phones, PDAs, and Power Tools (NiMH, NiCd, Lithium-Ion) 📱

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Operate the device until the battery reaches approximately 20% capacity.
  • Avoid premature recharging.
  • Do not allow the battery to fully discharge during the initial cycles.

Post-Conditioning

  • Recharge the battery only when necessary.
  • These batteries are capable of approximately 500 charge cycles:
  • Once daily → ~500 days
    Twice daily → ~250 days
    Note: Even a partial recharge is considered a full cycle.

2. Sealed Lead Acid (SLA) Batteries 💡

  • No conditioning required.
  • Maintain the battery in a fully charged state; avoid complete discharge.
  • Capable of 300–400 charge cycles.
  • Expected service life: 2–3 years, depending on usage conditions.

3. Laptop Batteries (Lithium-Ion) 💻

Initial Charge

  • Fully charge the battery overnight prior to first use.

Conditioning (First 2–6 Charge Cycles)

  • Charge fully, then discharge to approximately 20% capacity.
  • Avoid complete discharge, as some devices may not detect a fully drained battery.

Post-Conditioning

  • Minimize frequent plugging and unplugging.
  • Allow the battery to discharge moderately at least once per month to maintain optimal performance.
  • Occasional cycling is recommended to sustain battery health.

Professional Recommendation

Adhering to these guidelines will enhance battery longevity and ensure reliable performance.

For further assistance regarding your battery or order, our customer support team is available to provide guidance.

Delivery and Shipping

Everything You Need to Know About Shipping with BatteryWeb (USA)

We know reliable delivery matters when you need power fast. Here’s how BatteryWeb makes shipping easy across the USA:

🚚 Shipping & Delivery

Most orders ship next business day (some products like sealed lead acid may take a little longer).

Same-day shipping available if you order before 11:59 AM (delivery depends on the carrier).

We ship nationwide using FedEx, UPS, USPS, DHL, and regional ground carriers.

Shipping costs are calculated automatically at checkout based on weight, distance, and carrier.

Transit times shown are estimates only (business days, no weekends/holidays).

🌍 Shipping Restrictions

Lithium batteries cannot be shipped by USPS or air. They must go via FedEx Ground, UPS Ground, or DHL Ground.

PO Box deliveries are only available via USPS.

At this time, we do not ship lithium batteries to Puerto Rico. NiMH, NiCd, and Alkaline can be shipped.

📦 Important Notes

Double-check your shipping address! If an incorrect address is used and the order is returned, re-shipping costs are the buyer’s responsibility.

If a product is temporarily out of stock, we’ll notify you right away with the expected restock date—or issue a refund if you prefer.

💲 Currency & Pricing

All prices are shown in USD.

Orders shipped outside the USA may be subject to local taxes, customs fees, or import duties. These are the buyer’s responsibility.

⚡ At BatteryWeb, we’re committed to getting your batteries delivered quickly, safely, and affordably—so you’ll always have the power you need, when you need it.

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.

🔹 Our products are generic replacement parts and are not affiliated with, endorsed by, or manufactured by the original equipment manufacturers (OEMs).


Volts & Amps

12 Volts | 145 Ah

Terminal Type

Internal Thread

Yuasa HX505-12FR - Compatible with Enersys

The Yuasa HX505-12FR replacement battery is a dependable 12 Volt, 145 Ah option designed to work with Enersys systems. Combining consistent capacity and reliable terminal construction, this unit is crafted to support critical power applications where uptime matters. If you require a long-lasting battery solution to replace older or failing modules, the HX505-12FR brings high-performance characteristics and dependable service to your UPS or backup array.

Key Specifications

  • Product Model: HX505-12FR
  • Replacement Type: UPS Battery (Replacement)
  • Compatible Brand: Enersys
  • Brand (Replacement): Yuasa
  • Voltage: 12 Volts
  • Capacity: 145 Ah
  • Terminal Type: Internal Thread

Benefits

The HX505-12FR is tailored for durability and consistent output. As a long-lasting battery, it offers stable performance throughout its service life and reduces the need for frequent replacements. Its internal thread terminals ensure secure connections, minimizing the risk of terminal degradation that can compromise system reliability. As a high-performance battery replacement, the HX505-12FR maintains dependable charge acceptance and delivers predictable runtime under load.

Durability: Designed to withstand standard UPS and standby environments, the robust casing and secure internal terminals promote extended operational life. Longevity: With 145 Ah capacity at 12 Volts, this unit provides substantial backup time for smaller to medium-sized racks and systems that require dependable reserve power. Performance: Ideal for both float-charged standby and periodic cyclic use, the HX505-12FR balances energy density with reliable discharge characteristics.

Typical applications include uninterruptible power supplies, emergency lighting and power systems, telecom backup, data center UPS strings, and industrial control battery banks. It is also useful in hybrid power systems and energy storage arrays where a direct replacement battery must match capacity and terminal configuration to ensure seamless integration.

Ready to secure reliable backup power? Choose the Yuasa HX505-12FR replacement battery for a high-performance, long-lasting battery solution compatible with Enersys systems. Order now to protect your critical infrastructure and reduce the risk of downtime.


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.