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Enersys  |  SKU: BW-13241

SigmasTek SPX12-500FR High Rate Compatible Replacement Battery

Sale price $630.39 USD Regular price $791.25
Shipping calculated at checkout.

➤ High rate battery delivers 491 Watts per cell at 15 minutes for powerful performance

➤ Absorbent Glass Mat (AGM) technology ensures leak-proof and maintenance-free operation

➤ Flame retardant ABS case (UL94 V-0) provides enhanced safety and durability

➤ UL Listed and meets or exceeds original manufacturer specifications for reliable compatibility

➤ Long service life up to 10 years standby and 300 discharge cycles for extended use


📦🚀 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

SigmasTek SPX12-500FR High Rate Replacement Battery — Compatible with SPX12-500FR

The SigmasTek SPX12-500FR high rate replacement battery combines compatibility, robust construction, and reliable output to keep your backup systems operating when you need them most. Engineered to meet or exceed OEM specifications, this high-performance battery offers dependable performance for UPS systems, emergency power applications, and other critical installations. Choose the SPX12-500FR replacement battery for a long-lasting battery option that supports continuous protection and peace of mind.

Key Specifications

  • Brand: SigmasTek
  • Model: SPX12-500FR
  • Volts: 12 V
  • Amp Hours: 145 AH
  • Watts per Cell: 491 W/C (15 minute rate at 1.67V)
  • Weight: 95.9 Lbs
  • Length: 13.19 In
  • Width: 6.77 In
  • Height: 10.83 In
  • Terminal: IT (Internal Thread)
  • Technology: Absorbent Glass Mat (AGM) Sealed Battery
  • Case: ABS (UL94 V-0) flame retardant case
  • UL Listed: Yes
  • Self-Discharge: Less than 3% per month
  • Expected Service Life: Up to 10 years in standby
  • Cycle Life: Up to 300 complete discharge cycles
  • Package: Contains 1 battery
  • Warranty: 2-Year Warranty (3-Year Extended Warranty Available)
  • Shipping: ETD 3 Business Days; Shipping Methods: UPS Ground and USPS; ships in 1 business day for in-stock items

Benefits

The SigmasTek SPX12-500FR replacement battery is built for stability and long-term performance. Its AGM design provides a maintenance-free, spill-proof solution that is safe to operate close to people and sensitive equipment. The flame retardant ABS case and UL listing help ensure compliance and added safety in demanding environments such as data centers and industrial control rooms.

Performance at high discharge rates is a hallmark of this unit, delivering steady output on the 15-minute rate and ensuring your UPS or emergency power system maintains critical loads. The SPX12-500FR’s low self-discharge and up to 10-year standby life make it an economical, long-lasting battery for standby applications. Typical uses include Uninterruptible Power Supply (UPS), Emergency Power Supply, Emergency Lighting, Solar Power Systems, and other backup scenarios. It also serves well where durable, reliable power is needed for tools and intermittent heavy-load equipment.

Ready to upgrade to a reliable, long-lasting battery? Purchase the SigmasTek SPX12-500FR replacement battery today and secure continuous protection for your vital systems.


Payment & Security

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