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SigmasTek  |  SKU: BW-4327

ONEAC ON2000XIU-SN UPS Compatible Replacement Battery Set

Sale price $83.46 USD Regular price $105.42
Shipping calculated at checkout.

➤ High rate discharge design for fast power delivery

➤ Valve regulated spill-proof construction enhances safety

➤ Low self-discharge keeps batteries ready for use

➤ High vibration resistance ensures long service life

➤ U.L. recognized and CE certified for 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 | 5.5 Ah

Terminal Type

F2

Replacement SigmasTek SP12-5.5HR Battery Set for ONEAC ON2000XIU-SN

Restore reliable backup power to your ONEAC ON2000XIU-SN with this brand new replacement UPS battery set. Designed for dependable performance in high rate discharge situations, this eight-battery kit supplies the consistent voltage and capacity your ONEAC UPS expects. Ideal for protecting critical equipment, this high-performance UPS battery pack delivers factory-fresh cells and certified construction for trustworthy, long-lasting operation.

Key Specifications

  • Compatible UPS model: ONEAC ON2000XIU-SN
  • Included batteries: 8 x SigmasTek SP12-5.5HR
  • Voltage: 12 Volts
  • Capacity: 5.5 AH (amp-hours)
  • Terminal type: F2 (as listed in product text)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge
  • Resistance: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Installation note: Requires reuse of existing cables and hardware from your original configuration

Benefits

  • Robust construction: Valve regulated, spill proof design combined with high vibration resistance means these batteries are well-suited for rack-mounted and portable UPS installations where durability matters.
  • Dependable longevity: Low self-discharge characteristics and factory-fresh manufacture provide greater shelf life and a more predictable service life once installed—qualities you want in a long-lasting battery for critical systems.
  • High-performance capability: Optimized for high rate discharge, these units supply the burst power needed by ONEAC ON2000XIU-SN under heavy load conditions, making them an ideal high-performance UPS battery replacement.
  • Wide applicability: Use this replacement UPS battery pack in Uninterruptible Power Supply (UPS) units, emergency power supply setups, and compatible battery-powered tools requiring 12V 5.5AH cells.
  • Safety and assurance: U.L. recognition and CE certification confirm adherence to recognized safety standards for professional installations.
  • Easy maintenance approach: Replacing the full set of eight SigmasTek cells restores balanced capacity and helps the ONEAC ON2000XIU-SN perform as intended.

Ready to upgrade your ONEAC ON2000XIU-SN with a reliable, high-quality replacement UPS battery set? Click to purchase now and take advantage of factory-fresh SigmasTek batteries, certified quality, and a 1 year warranty. Order today for prompt shipping on in-stock items.



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