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-8520

SigmasTek 12 Volt 22 Amp NB Terminal High Rate Compatible Replacement Battery Set (Set Of 4)

Sale price $237.55 USD Regular price $311.04
Shipping calculated at checkout.

➤ Maintenance-free design for hassle-free use

➤ Spillproof and leakproof for safe operation

➤ U.L. recognized and CE certified for quality assurance

➤ Absorbed Glass Mat design enhances durability and performance

➤ Extreme resistance to freeze, heat, and vibration conditions


📦🚀 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 | 22 Ah

Terminal Type

Nut & Bolt

SigmasTek 12V 22AH Replacement Battery Set (4-Pack) — Sealed Lead Acid Systems

When you need a dependable multi-battery solution, the SigmasTek four battery set offers factory-fresh, maintenance-free power suited for sealed lead acid systems. This replacement battery set is built for resilience with absorbed glass mat design and valve regulated venting that keeps the pack spillproof and leakproof. Designed for reliability across challenging conditions, it’s a practical choice for systems requiring multiple 12V 22Ah units installed together.

Key Specifications

  • Brand: SigmasTek
  • Configuration: Four battery set (4-pack)
  • Voltage: 12 Volts
  • Capacity: 22 Ah (22 amp hours)
  • Terminal Type: Nut & Bolt
  • Design: Absorbed Glass Mat (AGM) Design
  • Valve System: Valve Regulated Vent System
  • Features: Maintenance-Free, Spillproof and Leakproof Design
  • Resistance: Extreme Freeze, Heat and Vibration Resistance
  • Performance: Superior Starting Power and Deep Cycle Capacity
  • Condition: Brand New, Factory Fresh
  • Certifications: U.L. Recognized and CE Certified
  • Warranty: 1 Year Warranty
  • Installation Note: You must use existing cables and hardware to connect your batteries

Benefits

  • Durability: With sealed AGM construction and robust valve regulation, this replacement battery set is engineered to resist leaks and tolerate extreme temperature and vibration environments for dependable service life.
  • Long life: Designed for deep cycle usage and superior starting power, these long-lasting batteries provide steady performance across repeated cycles, making them suitable for continuous or standby applications.
  • High performance: The set is optimized for consistent output and reliability, offering the high-performance battery characteristics needed by demanding systems that rely on multiple batteries working together.
  • Typical applications: Ideal for sealed lead acid systems, these batteries are suitable for mobility packs, backup systems, UPS arrays, emergency power supplies, and other equipment that benefits from a matched multi-battery configuration. They also perform well in portable power and tool-related setups where sealed AGM batteries are specified.
  • Maintenance-free convenience: The sealed and spillproof design reduces upkeep and simplifies installation when reusing your existing cables and hardware.
  • Certified reliability: U.L. recognition and CE certification provide assurance of manufacturing and safety standards.

Restore dependable power with the SigmasTek 12V 22AH replacement battery set. If you need a durable, high-performance battery pack for sealed lead acid systems, this 4-pack delivers long-lasting battery life and reliable operation. Add this set to your cart today to secure consistent power and peace of mind.


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.