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Enersys  |  SKU: BW-1900

SigmasTek SPX12-500FR High Performance UPS Replacement Battery

Sale price $533.32 USD Regular price $755.53
Shipping calculated at checkout.

➤ Genuine SigmasTek SPX12-500FR sealed lead acid battery

➤ High-rate discharge design for efficient UPS performance

➤ Low self-discharge extends battery life up to 10 years

➤ Spill-proof, no-leak ABS flame retardant case

➤ Factory fresh with 3-year warranty and UL certification


📦🚀 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

Genuine SigmasTek SPX12-500FR - Compatible SigmasTek SPX12-500FR

This genuine SigmasTek SPX12-500FR replacement UPS battery is engineered for dependable compatibility, outstanding discharge performance, and long-term reliability. As a factory fresh, sealed lead acid unit designed for high-rate discharge, it offers stable power delivery for UPS applications, emergency backup, and critical systems. If you need a high-performance UPS battery that holds charge, resists leaks, and supports extended standby lifetimes, the SPX12-500FR is an excellent choice.

Key Specifications

  • Model: SigmasTek SPX12-500FR
  • Watts per cell: 491 Watts per cell on 15-min rate at 1.67 Volts
  • Self-discharge rate: Less than 3% per month
  • Expected life: Up to 10 years in standby use
  • Cycle life: Up to 300 cycles at 100% discharge in cycle service
  • Construction: No-leak construction; can be operated in any position
  • Technology: Absorbent Glass Mat Technology
  • Case: ABS (UL94 V-0) flame retardant case
  • Condition: Brand New, Factory Fresh
  • Safety/Certifications: UL Listed
  • Warranty: 3 Year Warranty
  • Features: Spill Proof Construction; Superior Performance Guaranteed
  • Brand: SigmasTek
  • Manufacturer: Enersys
  • Voltage: 12 Volts
  • Amp Hours: 145 Ah
  • Terminal Type: Internal Thread
  • Model Compatibility: SigmasTek SPX12-500FR

Benefits

As a genuine SigmasTek product, this high-performance UPS battery offers long-term reliability and proven charge retention. The AGM construction delivers excellent charge acceptance and vibration resistance while the flame-retardant ABS case and spill-proof design protect sensitive equipment. Low self-discharge makes it ideal for standby inventory and emergency reserve power. Typical applications include UPS systems for servers and networks, emergency lighting and HVAC controls, telecom gear, and portable equipment used during maintenance or service calls. With a lengthy standby life and solid cyclic performance, it functions as a true long-lasting battery for both backup and active use cases.

Each unit is inspected, professionally packaged, and shipped ready to install. Backed by a 3 year warranty and UL listing, the SPX12-500FR offers certified safety and reliable performance for technicians, facilities managers, and end users who demand quality components.

Don’t wait—purchase the genuine SigmasTek SPX12-500FR replacement UPS battery today to secure dependable backup power. Order now for fast fulfillment and ensure your critical systems remain protected with a long-lasting, high-performance UPS battery.


Payment & Security

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