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SigmasTek  |  SKU: BW-11659

JohnLite 9166NS High Capacity Replacement Battery

Sale price $9.44 USD Regular price $10.97
Shipping calculated at checkout.

➤ Compatible replacement for JohnLite 9166NS emergency lighting battery

➤ Absorbent Glass Mat (AGM) technology for enhanced durability

➤ Maintenance-free and spill-proof design for safe, hassle-free use

➤ U.L. Recognized and CE Certified for reliable quality and safety

➤ Includes 1-year warranty for peace of mind and protection


📦🚀 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

6 Volts | 4.5 AH

Terminal Type

F1

JohnLite 9166NS Replacement Battery — Compatible with JohnLite 9166NS

Keep emergency systems fully operational with this replacement battery for the JohnLite 9166NS. Offering compatibility, safety, and dependable runtime, this high-performance battery uses sealed-lead-acid SLA chemistry and AGM technology to provide consistent performance. The JohnLite 9166NS replacement battery is factory-fresh, maintenance-free, and designed to supply reliable backup power for emergency lighting and related applications where uninterrupted illumination is critical.

Key Specifications

  • Model Compatibility: JohnLite 9166NS
  • Battery Type: Rechargeable Sealed-Lead-Acid (SLA) Emergency Lighting Battery
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Design: Maintenance-Free Design with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Brand: SigmasTek
  • Voltage: 6 Volts
  • Capacity: 4.5 AH
  • Terminal: F1

Benefits

Designed for longevity and reliable service, this JohnLite 9166NS replacement battery minimizes maintenance and maximizes uptime for emergency lighting systems. The AGM design offers low internal resistance for efficient recharging and improved cyclic performance, while the sealed, spill-proof housing increases safety during installation and operation. As a long-lasting battery choice, it reduces the frequency of replacements and supports consistent emergency illumination when it’s needed most.

This high-performance battery is suitable for a range of applications including emergency exit signs, building emergency lighting fixtures, small UPS units, alarm back-up, and other safety-critical standby systems. U.L. recognition and CE certification provide assurance that the battery meets relevant safety and quality standards for commercial installations. The SigmasTek 6 Volt 4.5 AH F1 configuration allows for straightforward replacement in compatible JohnLite units.

When reliability and compliance matter, choose this replacement battery to maintain emergency lighting readiness. Its maintenance-free SLA construction and dependable performance make it a practical and cost-effective replacement for worn or aged batteries.

Ensure your JohnLite 9166NS performs when it counts — order this reliable, long-lasting replacement battery today and protect your facility with dependable emergency power.


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