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SigmasTek  |  SKU: BW-6439

Altronix AL642ULADAJ High-Performance Alarm Replacement Battery Set

Sale price $58.43 USD Regular price $70.55
Shipping calculated at checkout.

➤ Compact size: 5.95" x 3.86" x 3.7" for easy installation

➤ Reliable 12 Volt power output for security systems

➤ 12 Ah capacity ensures long-lasting backup power

➤ F2 terminal type for secure and convenient connections

➤ Durable 14.5 lb weight provides stability and robustness


📦🚀 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 | 12 Ah

Terminal Type

F2

SigmasTek 12V 12Ah F2 Replacement Battery — Compatible with Altronix Systems

Restore reliable backup power with the SigmasTek 12 Volts 12 Ah F2 replacement battery, crafted to be compatible with Altronix systems. This high-performance battery provides steady 12V output and consistent capacity, making it a trusted choice for security professionals and facility technicians. When you need a long-lasting battery to maintain alarm systems, emergency power, or critical standby power, this SigmasTek unit delivers the reliability you expect.

Key Specifications

  • Manufacturer: SigmasTek
  • Brand Replacement: Altronix
  • Type: Security Alarm
  • Voltage: 12 Volts
  • Amp Hours: 12 Ah
  • Terminal Type: F2
  • Length (in.): 5.95
  • Width (in.): 3.86
  • Height (in.): 3.7
  • Weight (lb.): 14.50

Benefits

Reliable and low-maintenance, this replacement battery offers superior performance in standby and cyclic roles. The sealed lead-acid chemistry reduces leakage risk and simplifies storage, while providing the stability required for sensitive alarm and communication devices. As a long-lasting battery, it supports routine charge/discharge cycles and maintains capacity over extended service intervals.

Durability: Engineered to withstand typical field conditions, it delivers dependable service life and resists common failure modes like swelling and terminal corrosion. Long life: The 12 Ah capacity offers ample reserve for many alarm panels and small UPS systems, helping to ensure systems remain operational during power interruptions. Performance: Stable 12V output and secure F2 terminals support consistent electrical connections and prevent nuisance faults.

Common applications include UPS backup for network components, emergency lighting, alarm and security control panels, access control modules, and portable equipment requiring a reliable 12V source. With dimensions of 5.95" x 3.86" x 3.7" and a weight of 14.50 lb, it fits into many Altronix-compatible enclosures as a straightforward replacement.

Don’t compromise on backup power—add this SigmasTek 12V 12Ah F2 replacement battery to your cart now for a high-performance, long-lasting battery solution compatible with Altronix systems. Buy today to protect your critical equipment.


Payment & Security

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