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SigmasTek  |  SKU: BW-5222

ONEAC ON400X-WL UPS High Performance Compatible Replacement Battery Set

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

➤ Includes 2 SigmasTek SP12-18HR batteries (12V 18AH) for ONEAC ON400X-WL UPS

➤ Designed for high rate discharge to meet UPS power demands

➤ Valve regulated, spill-proof design for safe operation

➤ Low self-discharge and high vibration resistance for durability

➤ Brand new, U.L. recognized, CE certified with 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 SigmasTek SP12-18HR Battery Set for ONEAC ON400X-WL

Restore peak performance to your ONEAC ON400X-WL Uninterruptible Power Supply with this high-quality replacement UPS battery set. Designed to deliver reliable backup power and consistent performance, these SigmasTek batteries are factory fresh and built for the demands of high rate discharge UPS applications. Whether you need uninterrupted runtime during outages or dependable energy for sensitive equipment, this kit gives your ONEAC ON400X-WL the dependable power it needs.

Key Specifications

  • Compatible UPS model: ONEAC ON400X-WL
  • Included quantity: 2 batteries (battery set)
  • Battery model: SigmasTek SP12-18HR
  • Voltage: 12 Volts
  • Capacity: 18 AH (amp-hours)
  • 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
  • Installation note: Use all existing cables and hardware from the original configuration to connect the new UPS batteries

Benefits

  • Durability: Rugged valve regulated construction and vibration resistance make these batteries suitable for UPS cabinets and environments where physical stresses occur.
  • Long-life performance: Low self-discharge characteristics help these batteries retain charge over time, offering the long-lasting battery performance you expect for emergency readiness.
  • High power output: Engineered for high rate discharge, this high-performance UPS battery set supplies the burst power required by your ONEAC ON400X-WL during critical events.
  • Safety and compliance: U.L. recognition and CE certification ensure adherence to established safety standards.
  • Multiple uses: Perfect for Uninterruptible Power Supply (UPS) units, emergency power supply systems, and battery powered tools where reliable short-term energy delivery is essential.
  • OEM-tested assurance: Each replacement battery is personally tested to meet or exceed OEM specifications so your ONEAC ON400X-WL can perform as intended.

Don’t wait until a power event jeopardizes your equipment—buy this SigmasTek SP12-18HR replacement UPS battery set for your ONEAC ON400X-WL today. Fast shipping and a 1 year warranty make upgrading simple and risk-free.


Payment & Security

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