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SigmasTek  |  SKU: BW-4407

ONEAC ONBP-405 UPS Compatible Replacement Battery Set

Sale price $41.73 USD Regular price $52.70
Shipping calculated at checkout.

➤ Includes 4 brand new 12V 5.5AH SigmasTek batteries for ONEAC ONBP-405 UPS

➤ High rate discharge design for emergency power applications

➤ Valve regulated, spill-proof construction enhances safety

➤ Low self-discharge maintains battery readiness over time

➤ U.L. and CE certified with a 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 | 5.5 Ah

Terminal Type

F2

Replacement Battery Set for ONEAC ONBP-405 UPS (SigmasTek SP12-5.5HR)

Designed to fit the ONEAC ONBP-405, this replacement UPS battery set offers reliable compatibility, superior performance, and the durability required for critical backup systems. The kit includes four SigmasTek SP12-5.5HR batteries that deliver the stable power and fast discharge characteristics needed for short-duration high load events. Choose this replacement UPS battery to restore runtime, maintain system stability, and protect sensitive electronics connected to your ONEAC ONBP-405.

Key Specifications

  • Compatible UPS Model: ONEAC ONBP-405
  • Battery Quantity: 4 batteries per set
  • Battery Model: SigmasTek SP12-5.5HR
  • Voltage: 12 Volts
  • Capacity: 5.5 AH (Amp-hours)
  • Terminal Type: F2
  • Design: High Rate Discharge
  • Construction: Valve Regulated, Spill Proof
  • Features: Low Self-discharge, High Vibration Resistance
  • Certifications: U.L. Recognized, CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

This high-performance UPS battery set is engineered for demanding environments where the ONEAC ONBP-405 must supply burst power without compromise. The high rate discharge design gives you the ability to deliver higher power output over short durations—critical for supporting surge loads and providing clean, continuous power to connected equipment. Because it is a long-lasting battery solution with low self-discharge, you’ll benefit from extended shelf life and reliable performance when called upon.

The valve regulated, spill-proof construction minimizes maintenance and improves safety, while high vibration resistance makes this replacement UPS battery well-suited for both stationary and mobile installations. With UL recognition and CE certification, these batteries meet industry safety standards for a broad range of applications, including UPS units, emergency power supply systems, and battery-powered tools.

Our experienced technicians test every replacement UPS battery set to ensure compatibility and performance with the ONEAC ONBP-405. Installation requires reusing your original cables and hardware; this ensures a seamless swap and keeps your UPS configuration intact.

Don’t wait until runtime is compromised. Purchase this reliable, high-performance UPS battery set for your ONEAC ONBP-405 today and regain dependable backup power. Order now for quick shipping and outstanding value.



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