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-6377

Dual Lite 12-582 High Performance Alarm Replacement Battery

Sale price $60.75 USD Regular price $73.35
Shipping calculated at checkout.

➤ Valve regulated, spill-proof construction for safe and reliable use

➤ U.L. recognized and CE certified ensuring high quality and safety standards

➤ Superior performance with long-lasting power for your alarm system

➤ Rugged plastic case and cover for enhanced durability and protection

➤ Brand new, factory fresh battery with a 1-year warranty for peace of mind


📦🚀 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 | 18 Ah

Terminal Type

Nut & Bolt

Dual Lite 12-582 Replacement Alarm Battery - SP12-18 NB (12 V 18 AH)

This replacement battery for the Dual Lite 12-582 alarm system is engineered to meet or exceed original OEM specifications, delivering reliable backup power for alarms and security equipment. The SP12-18 NB (12 V 18 AH) unit provides consistent, dependable performance to help protect homes, offices, and critical installations. If you need a high-performance, long-lasting battery that maintains system readiness, this Dual Lite 12-582 battery is an ideal option.

Key Specifications

  • Includes: 1 battery - SP12-18 NB (12 V 18 AH)
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Construction: Valve Regulated Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Exterior: Rugged Plastic Case And Cover
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Terminal: Nut & Bolt
  • Brand: SigmasTek
  • Performance: Superior Performance Guaranteed

Benefits

Designed for durability and safety, the valve-regulated, spill-proof design of this replacement battery prevents leakage and reduces maintenance requirements while shielding internal cells in a rugged plastic case. These attributes combine to create a high-performance battery that sustains reliable voltage under load—critical for alarm panels, access control units, and security systems that must operate without interruption.

As a long-lasting battery solution with a factory fresh build and CE and U.L. recognition, the SP12-18 NB supports extended run-times and dependable standby power. Typical applications include access control systems, home alarm systems, burglar alarm systems, security systems, and general power supplies. It is also well suited for UPS and emergency power situations where uninterrupted energy is essential to safety and operations.

Customers benefit from a product that is guaranteed compatible with the Dual Lite 12-582 model and backed by a one-year warranty. Whether replacing a worn battery in the field or stocking preventive maintenance parts, this replacement battery offers superior performance, straightforward installation with nut and bolt terminals, and a cost-effective alternative to OEM pricing.

Secure your Dual Lite 12-582 SP12-18 NB replacement battery today and ensure continuous protection for your alarm and security systems. Order now to get a reliable, high-performance battery delivered quickly.


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.