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SigmasTek  |  SKU: BW-5677

Notifier NFS-320 12V 18Ah SLA High Capacity Replacement Battery - 2 Pack

Sale price $87.30 USD Regular price $105.41
Shipping calculated at checkout.

➤ Exact fit replacement for Notifier NFS-320 Fire Alarm Systems

➤ Meets or exceeds OEM specifications for dependable performance

➤ Maintenance-free sealed lead acid (SLA) design for hassle-free use

➤ 12V 18AH capacity delivers extended backup power during emergencies

➤ Includes 2-pack for convenient and cost-effective replacement


📦🚀 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 | 18 Ah

Terminal Type

Nut & Bolt

2-Pack 12V 18Ah Replacement Battery for Notifier NFS-320 Fire Alarm System

Ensure your Notifier NFS-320 fire alarm system maintains reliable backup power with this 2-pack of 12V 18Ah replacement batteries. Specifically engineered to meet or exceed OEM specifications, these sealed lead acid batteries provide a precise fit and consistent performance for emergency backup applications. When seconds count, count on this high-performance battery solution to keep your life-safety systems energized and compliant.

Key Specifications

  • Compatible Model: Notifier NFS-320 Fire Alarm System
  • Pack Quantity: 2-pack
  • Voltage: 12 Volts
  • Capacity: 18 Ah
  • Battery Type: Sealed Lead Acid (SLA), maintenance-free
  • Brand: SigmasTek
  • Meets/Exceeds: OEM specifications for reliable performance

Benefits

This replacement battery set is designed for exceptional durability and a long service life, offering a long-lasting battery solution for critical safety systems. The 18Ah capacity supplies extended runtime, helping your Notifier NFS-320 maintain operation during extended outages or when multiple alarm events occur. As a high-performance battery option, the sealed construction prevents leakage and reduces maintenance needs, making it ideal for installed fire panels and access-restricted cabinets.

Reliability is essential for fire alarm applications; these batteries deliver consistent voltage under load and meet stringent compatibility standards so you can trust them in emergency conditions. Built for technicians and facilities teams, the 2-pack provides convenient replacement or spare capability to minimize downtime during scheduled maintenance or unexpected failures.

Typical applications include fire alarm backup (Notifier NFS-320), UPS systems, emergency lighting, security control panels, and other standby systems requiring dependable power. Their sealed, maintenance-free design and robust performance make them suitable for commercial buildings, schools, healthcare facilities, and multi-tenant properties where safety and continuity are paramount.

Protect your Notifier NFS-320 with these dependable 12V 18Ah replacement batteries — add this 2-pack to your cart today for reliable, long-lasting backup power.


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