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Enersys  |  SKU: BW-5576

EnerSys HX HX505 UPS High Performance Replacement Battery

Sale price $533.32 USD Regular price $773.31
Shipping calculated at checkout.

➤ Genuine EnerSys HX 12HX330 battery with high-rate discharge design

➤ Long life up to 10 years and 300 deep cycles

➤ Spill-proof construction and flame retardant ABS case

➤ Backed by 3-year warranty for peace of mind

➤ UL listed and factory fresh for optimal performance


📦🚀 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.

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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

EnerSys HX HX505 — Compatible UPS Model: EnerSys HX HX505

Upgrade your backup power with the genuine EnerSys HX HX505 replacement UPS battery — engineered for outstanding compatibility, consistent performance, and proven reliability in UPS systems. This high-performance UPS battery is designed for demanding high-rate discharge applications and delivers 491 Watts per cell on a 15-minute rate at 1.67 Volts, making it an ideal choice when you need dependable runtime and quick recovery. If you’re looking for a long-lasting battery solution to maintain server rooms, network closets, or critical infrastructure, the EnerSys HX HX505 provides factory-fresh quality and professional testing for trouble-free installation.

Key Specifications

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

Benefits

The EnerSys HX HX505 delivers a durable, long-lasting battery solution engineered for heavy-duty UPS and standby applications. Its high-rate discharge design and AGM construction provide exceptional performance under load, ensuring your critical equipment remains online when power events occur. The low self-discharge rate and long standby life make this a true long-lasting battery for emergency power systems where readiness matters.

Durability features such as a flame retardant ABS case, spill-proof construction, and no-leak design allow safe operation in a variety of orientations and environments. Whether used in data centers, telecommunications, medical equipment backup, or industrial UPS systems, this high-performance UPS battery withstands frequent cycling and delivers consistent output for longer service intervals.

Typical applications include uninterruptible power supplies (UPS), emergency power systems, telecommunications, and other critical backup power uses. Technicians and facility managers will appreciate the professional testing and factory-fresh condition that minimize installation issues and maximize performance from day one.

Ready to replace your existing pack? Order the genuine EnerSys HX HX505 replacement UPS battery today to secure reliable runtime and peace of mind. Buy now to take advantage of fast shipping and our competitive pricing.


Payment & Security

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