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SigmasTek  |  SKU: BW-13294

National NBX12-100 UPS High Performance Replacement Battery

Sale price $120.81 USD Regular price $151.64
Shipping calculated at checkout.

➤ Compatible replacement for National Battery NBX12-100 with high-rate discharge design

➤ 93 Watts per cell at 15-min rate ensures excellent UPS performance

➤ Low self-discharge rate under 3% per month for up to 10 years standby life

➤ Spill-proof, no-leak construction allows operation in any position

➤ ABS flame retardant case with UL listing and 3-year warranty for safety and reliability


📦🚀 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 | 28 AH

Terminal Type

Internal Thread

National Battery NBX12-100 UPS Battery (Replacement) - Compatible with NBX12-100

The National Battery NBX12-100 replacement UPS battery is engineered to deliver superior performance in uninterruptible power supply (UPS) systems and other high-rate discharge applications. Designed as a high-performance battery option, the NBX12-100 offers strong power delivery (93 watts per cell on a 15-minute rate at 1.67 volts) and low self-discharge, making it an excellent replacement battery for installations that demand dependable standby and cycle endurance. This factory-fresh, UL-listed replacement meets rigorous quality standards and is built to give you long-lasting battery service.

Key Specifications

  • Model: National Battery NBX12-100 (Replacement)
  • Battery Type: Absorbent Glass Mat (AGM) Technology
  • Voltage: 12 Volts
  • Capacity: 28 AH
  • Power Rating: 93 Watts per cell on 15-minute rate at 1.67 Volts
  • Self-discharge Rate: Less than 3% per month
  • Expected Life (Standby Use): Up to 10 years
  • Cycle Life: Up to 300 cycles at 100% discharge in cycle service
  • Construction: Spill Proof / No-leak construction
  • Case Material: ABS (UL94 V-0) flame retardant case
  • Orientation: Can be operated in any position
  • Condition: Brand New, Factory Fresh
  • Warranty: 3 Year Warranty
  • Certifications: UL Listed
  • Terminal Type: Internal Thread

Benefits

  • Proven durability: AGM construction and a flame-retardant ABS case offer spill-proof, robust protection that stands up to demanding UPS and standby applications.
  • Long-lasting battery life: With an expected standby life of up to 10 years and low self-discharge, this replacement battery minimizes maintenance and replacement frequency.
  • High-performance battery output: The NBX12-100 delivers strong high-rate discharge performance (93 W per cell at the 15-minute rate), which is critical for UPS systems, emergency power, and other high-load scenarios.
  • Versatile service profile: Suitable for both standby use where long life is key and cycle service where up to 300 deep cycles are required—making this an ideal choice for data centers, telecom, and critical power installations.
  • Easy, safe installation: Spill-proof design and the ability to operate in any orientation reduce installation constraints and improve safety during handling and replacement.

Replace your aging UPS battery with the reliable National Battery NBX12-100 replacement battery today. Order now to secure a high-performance, long-lasting battery backed by a 3-year warranty and UL listing—perfect for keeping your critical systems powered and protected.


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