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SigmasTek  |  SKU: BW-5271

APC SMART-UPS SU1400BX120 UPS High Performance Replacement Battery Set

Sale price $77.60 USD Regular price $112.53
Shipping calculated at checkout.

➤ Includes 2 brand new SigmasTek SP12-18HR batteries (12V 18AH) for APC SMART-UPS SU1400BX120

➤ High vibration resistance ensures longer life in tough conditions

➤ Valve regulated and spill-proof design for safe, leak-free operation

➤ Low self-discharge extends battery readiness over time

➤ Superior long life backed by 1 year warranty


📦🚀 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

Replacement Battery Set for APC SMART-UPS SU1400BX120 — SigmasTek SP12-18HR (Compatible with SU1400BX120)

Restore reliable runtime to your APC SMART-UPS SU1400BX120 with this brand new, factory-fresh replacement UPS battery set. Designed for compatibility and peak performance, this kit provides the dependable power delivery your SU1400BX120 needs during outages and brownouts. Ideal for mission-critical equipment in offices, server closets, and industrial environments, this replacement UPS battery delivers the high-rate discharge capability and durability required for short, intense power draws while maintaining low self-discharge for standby readiness.

Key Specifications

  • Includes: 2 SigmasTek SP12-18HR batteries
  • Voltage: 12 Volts
  • Amp-Hour (Ah): 18 AH
  • Battery Model: SP12-18HR
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Feature: Low Self-discharge
  • Feature: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility note: Must use all existing cables and hardware from original configuration
  • Brand: SigmasTek

Benefits

This replacement UPS battery set is engineered for users who require a high-performance UPS battery that won’t let them down when power quality falters. The high rate discharge design supplies higher power output for brief periods — perfect for the APC SMART-UPS SU1400BX120 during critical load transfers. Valve regulated, spill-proof construction minimizes maintenance and keeps installations safe and clean, while low self-discharge ensures these batteries are long-lasting battery solutions when held as spares.

Built with high vibration resistance and certified to U.L. and CE standards, these batteries are robust enough for office racks and light industrial applications. Typical applications include Uninterruptible Power Supply (UPS) units, emergency power systems, and battery-powered tools. When you need a reliable replacement UPS battery that meets or exceeds OEM specifications, this SigmasTek set gives you confidence in both daily operation and emergency performance.

Our technically savvy staff personally tests each SP12-18HR set to ensure superior performance and consistent, repeatable results. Orders for in-stock items are typically shipped within 24 hours, so you can get your APC SMART-UPS SU1400BX120 back to full runtime quickly. If you need assistance selecting the right replacement for your system, call our customer service at or e-mail us for fast, expert help.

Ready to upgrade? Buy this high-performance, long-lasting battery replacement for your APC SMART-UPS SU1400BX120 today and enjoy reliable emergency power and extended runtime — order now to restore UPS protection fast.


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