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-13620

12 Volt 55 Amp Sealed Lead Acid High Performance Replacement Battery

Sale price $193.95 USD Regular price $234.85
Shipping calculated at checkout.

➤ Absorbent Glass Mat (AGM) technology for enhanced performance

➤ Maintenance-free and spill-proof construction for easy use

➤ U.L. Recognized and CE Certified for safety and reliability

➤ Brand new and factory fresh to ensure long-lasting power

➤ 1-year warranty for peace of mind and guaranteed quality


📦🚀 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 | 55 AH

Terminal Type

Nut & Bolt

12 Volt 55 Amp Sealed Lead Acid Battery — Compatible with SigmasTek 12 Volts55 AH Nut & Bolt

This replacement Sealed Lead Acid 12 Volt 55 Amp battery is engineered to meet or exceed OEM SLA specifications and provide robust, high-capacity power for demanding applications. Featuring Absorbent Glass Mat (AGM) technology and a maintenance-free, spill-proof design, the SigmasTek 12 Volts55 AH Nut & Bolt model offers dependable performance as a high-performance battery and a long-lasting battery option for UPS systems, emergency power, telecommunications, and other heavy-duty uses.

Key Specifications

  • Voltage: 12 Volt
  • Capacity: 55 Amp (55 Ah)
  • Battery Type: Sealed Lead Acid (SLA), rechargeable
  • Technology: Absorbent Glass Mat (AGM)
  • Design: Maintenance-free with spill-proof construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand new, factory fresh
  • Warranty: 1 Year Warranty
  • Terminal Style: Nut & Bolt (as indicated in product model)
  • Brand: SigmasTek (as indicated in product model)
  • Compatibility: Meets or exceeds OEM SLA battery specifications

Benefits

This 12 Volt 55 Amp SLA is built for high-demand environments where a long-lasting battery and consistent power delivery are essential. AGM technology provides superior charge acceptance, low internal resistance, and excellent vibration resistance compared to conventional flooded lead-acid batteries. The sealed, maintenance-free design eliminates routine watering and minimizes leakage risk, making it ideal for enclosed cabinets and mobile installations.

As a high-performance battery, this model supports sustained discharge and reliable recharge cycles, which is critical for UPS backup, telecom systems, large emergency power banks, solar storage arrays, and industrial equipment. The nut-and-bolt terminal configuration facilitates secure, low-resistance connections suitable for heavy-current applications and repeated installation cycles.

Safety and compliance are reinforced by U.L. recognition and CE certification, while the one-year warranty and factory-fresh condition ensure you receive a quality, tested unit. Whether you need a replacement battery for critical infrastructure or are building a backup power solution, this 12 Volt 55 Amp SLA provides the capacity and reliability required by demanding systems.

Ready to secure dependable power? Purchase this 12 Volt 55 Amp replacement battery (SigmasTek 12 Volts55 AH Nut & Bolt) now for a high-performance, long-lasting battery solution backed by quality certifications and a one-year warranty.


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.