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
SigmasTek  |  SKU: BW-1946

Enersys 12HX100 UPS High Performance Replacement Battery

Sale price $98.99 USD Regular price $141.64
Shipping calculated at checkout.

➤ Compatible replacement for Enersys 12HX100 UPS battery

➤ 93 Watts per cell high-rate discharge for reliable UPS performance

➤ Less than 3% monthly self-discharge prolongs battery life

➤ Spill-proof and flame retardant ABS case for safe operation

➤ 3-year warranty and UL listed for trusted quality


📦🚀 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 | 28 AH

Terminal Type

Internal Thread

Replacement Enersys 12HX100 - Compatible SigmasTek 12V 28AH Internal Thread

Upgrade your UPS system with this compatible replacement Enersys 12HX100 rechargeable sealed lead acid battery. Engineered for excellent compatibility, dependable performance, and proven reliability, this high-rate discharge battery is a high-performance UPS battery designed to deliver consistent power when your equipment needs it most. Whether you run server racks, telecommunications gear, or critical industrial controllers, this long-lasting battery ensures stable backup and smooth transitions during outages.

Key Specifications

  • Compatible Model: Enersys 12HX100
  • Brand: SigmasTek (compatible replacement)
  • Voltage: 12 Volts
  • Capacity: 28 AH
  • Terminal Type: Internal Thread
  • High-rate discharge design: 93 Watts per cell on 15-min rate at 1.67 Volts
  • Battery Type: Rechargeable Sealed Lead Acid (Absorbent Glass Mat Technology)
  • Case: ABS (UL94 V-0) flame retardant case
  • Construction: Spill proof, no-leak construction; operable in any position
  • Self-discharge: Less than 3% per month
  • Expected Standby Life: Up to 10 years
  • Cycle Life: Up to 300 cycles at 100% discharge in cycle service
  • Warranty: 3 Year Warranty
  • Certifications: UL Listed
  • Condition: Brand New, Factory Fresh

Benefits

This replacement UPS battery offers lasting durability and robust performance under demanding conditions. The Absorbent Glass Mat (AGM) construction and flame-retardant ABS case combine to provide a spill-proof, maintenance-free design that resists vibration and shock—ideal for rack-mounted UPS systems and compact enclosures. As a high-performance UPS battery, it supplies steady discharge rates and excellent reserve capacity for critical loads.

Expect a long-lasting battery life in standby applications — up to 10 years — and reliable cycling capability (up to 300 cycles at full discharge) for applications that demand repeated charge/discharge performance. Low self-discharge keeps the battery ready for extended storage and emergency service without frequent maintenance.

  • Durability: No-leak, spill-proof construction; operates in any position
  • Long life: Up to 10 years in standby use and extended cycle life
  • High performance: 93 Watts per cell on 15-minute rate for reliable high-rate discharge
  • Typical applications: UPS systems, emergency power backup, telecom equipment, medical devices, industrial controls, and portable tools requiring sealed lead acid power

Replace your aging pack with confidence—this replacement Enersys 12HX100 compatible battery from SigmasTek is a cost-effective, high-performance UPS battery solution built for reliability. Order now to secure a long-lasting battery that keeps your critical systems running. Purchase today and enjoy fast shipping and our tested quality assurance.


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.