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SigmasTek  |  SKU: BW-13453

National Battery NB12-18NB Compatible Replacement Battery 12.66 lb

8% off
Sale price $55.99 USD Regular price $60.99
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High performance 12V 18AH SLA battery for reliable power
VRLA sealed technology allows safe operation in any position
NB terminal design ensures guaranteed compatibility with original battery
Wide operating temperature range for versatile use
1-year warranty provides peace of mind and product assurance
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.


Volts & Amps

12 Volts | 18 Ah

Terminal Type

Nut & Bolt

National Battery NB12-18NB Replacement Battery — Compatible with NB12-18NB

Designed as a direct National Battery NB12-18NB replacement battery, this high-performance 12V 18AH SLA unit delivers the reliable power and dependability your equipment requires. Built to meet or exceed original manufacturer specifications, the NB12-18NB replacement offers consistent discharge performance, a wide operating temperature range, and a long expected service life. Whether you are restoring critical equipment, replacing a worn pack in an emergency system, or stocking up for maintenance, this long-lasting battery is engineered for safety, quality, and dependable operation.

Key Specifications

  • Brand / Model: National Battery NB12-18NB replacement battery
  • Chemistry: Valve-Regulated Lead Acid (VRLA) Sealed Battery Technology
  • Certification: UL (Underwriters Laboratories) certified
  • Voltage: 12 V
  • Amp Hours: 18 AH
  • Terminal Type: NB
  • Weight: 12.65 Lbs
  • Dimensions: Length 7.13 In, Width 3 In, Height 6.59 In
  • Package: Package contains 1 battery
  • Warranty: 1-year Warranty
  • Shipping: ETD 3 Business Days; Shipping Methods – UPS Ground and USPS; we ship in 1 business day for all in-stock items

Benefits

  • Durability: Constructed with VRLA technology and sealed AGM-style construction to resist vibration and reduce maintenance, this replacement battery provides robust service in demanding conditions.
  • Long Life: The NB12-18NB is designed for a long expected service life and consistent capacity retention, making it a smart choice when you need a long-lasting battery for routine and standby applications.
  • High Performance: A high discharge design supports rapid current draw without compromising stability, qualifying it as a high-performance battery suitable for critical power tasks.
  • Safe and Versatile: VRLA construction allows safe operation in any orientation and near sensitive equipment, while UL certification gives added assurance for commercial and residential installations.
  • Typical Applications: Ideal for UPS systems, emergency lighting, medical equipment backups, alarm systems, telecommunications, small electric devices, and portable tools that call for a 12V 18AH NB terminal battery.
  • Guaranteed Compatibility: Engineered to match the form, fit, and function of the original NB12-18NB to simplify installation and reduce downtime.

Ready to replace your tired battery with a reliable, high-performance battery? Order this National Battery NB12-18NB replacement battery now to restore dependable power, enjoy a long-lasting battery life, and benefit from fast shipping and a 1-year warranty. Purchase today and keep your critical systems running.

Technical Specifications

Voltage12 Volts
Amp Hours18 Ah
Terminal TypeNut & Bolt
Length (in.)7.13
Width (in.)3.0
Height (in.)6.59
Weight (lb.)12.65

Product Highlights

  • Brand Replacement : National Battery NB12-18NB
  • Manufacturer: SigmasTek
  • Product Type: SLA Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

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