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SigmasTek  |  SKU: BW-11850

Sure-Lites 1800 High Performance Replacement Battery

Sale price $61.99 USD Regular price $95.59
Shipping calculated at checkout.

➤ Meets or exceeds OEM SLA battery specifications for Sure-Lites 1800

➤ Uses Absorbent Glass Mat (AGM) technology for reliable performance

➤ Maintenance-free and spill-proof design ensures safety and convenience

➤ U.L. Recognized and CE Certified for quality and compliance

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


📦🚀 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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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.
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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 | 20 Ah

Terminal Type

Nut & Bolt

Replacement Sure-Lites 1800 Battery — Compatible with Sure-Lites 1800

Upgrade your emergency lighting system with this replacement battery designed specifically for the Sure-Lites 1800. Engineered for dependable performance and reliable compatibility, this high-performance battery meets or exceeds OEM SLA specifications so you can trust it to power critical lighting and safety systems. Whether you need a long-lasting battery for emergency lighting, security, or medical equipment, the Sure-Lites 1800 replacement delivers consistent output and maintenance-free operation for worry-free service.

Key Specifications

  • Brand: SigmasTek
  • Model Compatibility: Sure-Lites 1800
  • Battery Type: Sealed Lead Acid (SLA)
  • Construction: Absorbent Glass Mat (AGM) Technology
  • Design: Maintenance-Free
  • Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Voltage: 6 Volts
  • Capacity: 20 Ah
  • Terminal Type: Nut & Bolt
  • Warranty: 1 Year

Benefits

This replacement battery is built to provide reliable, long-lasting power in demanding environments. With AGM technology and a maintenance-free, spill-proof design, it resists vibration and leakage while delivering stable output through repeated charge/discharge cycles. The sealed construction minimizes maintenance and makes this a safer choice for indoor emergency fixtures and enclosed electronics.

As a high-performance battery, it supports fast response and steady current delivery, making it ideal for emergency lighting systems, security alarms, and fire alarm panels. It also works well in medical equipment and consumer electronics that require reliable standby power. For applications like UPS systems, emergency power backup, and portable tools that demand dependable reserve capacity, this 6V 20Ah unit offers consistent runtime and trustworthy performance.

Certified by U.L. and CE and manufactured brand new, this replacement battery is a cost-effective way to restore your Sure-Lites 1800 to OEM-level reliability. The nut & bolt terminals provide secure connections for rack or cabinet installations, and the included one-year warranty gives you added peace of mind.

Ready to replace your Sure-Lites 1800 battery with a durable, high-performance solution? Order this long-lasting battery now to ensure uninterrupted protection and power — click to purchase or contact our support team for assistance.


Payment & Security

Payment methods

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