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SigmasTek  |  SKU: BW-13637

12 Volt 18 Amp Sealed Lead Acid High Performance Replacement Battery

Sale price $52.24 USD Regular price $63.26
Shipping calculated at checkout.

➤ Absorbent Glass Mat (AGM) technology for enhanced performance

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

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

➤ Brand new and factory fresh to ensure reliability and longevity

➤ 1-year warranty for peace of mind and product assurance


📦🚀 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

12 Volt 18 Amp Sealed Lead Acid Battery — SigmasTek 12 Volts18 AhNut & Bolt

The replacement Sealed Lead Acid 12 Volt 18 Amp battery from SigmasTek is engineered for compatibility and reliable performance across a variety of SLA applications. This brand-new, factory-fresh battery uses AGM technology, is maintenance-free and spill-proof, and comes UL recognized and CE certified. If you're seeking a replacement battery that balances performance and durability, this 12 Volt 18 Amp model is an excellent long-lasting battery option.

Key Specifications

  • Voltage: 12 Volt
  • Capacity: 18 Amp (as listed in product title)
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Design: Maintenance-Free, Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility: Replacement for Sealed Lead Acid 12 Volt 18 Amp models
  • Product Code/Model Info (as listed): 12 Volts18 AhNut & Bolt

Benefits

  • Durability: AGM cell construction and sealed, spill-proof casing reduce maintenance and increase resistance to vibration and shock.
  • Long life: Designed for both standby and cyclic use, this long-lasting battery provides dependable service life and consistent performance over time.
  • High performance: As a high-performance battery solution, it delivers steady current and quick recovery after charge — suitable for demanding loads.
  • Broad applicability: Commonly used in emergency lighting, security and fire alarm systems, medical equipment, consumer electronics, and home & garden devices.
  • Backup and UPS readiness: Ideal for UPS and emergency power applications where reliable backup energy is crucial to maintain uptime and protect sensitive equipment.
  • Tool and equipment support: Suitable for certain tools and portable equipment requiring stable SLA power delivery during use.
  • Trusted quality: With U.L. recognition, CE certification, and a one-year warranty, you get a safe, quality replacement battery backed by manufacturer assurances.

Secure reliable backup power today — purchase this replacement battery now for a high-performance, long-lasting battery solution and fast, dependable shipping.


Payment & Security

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