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SigmasTek  |  SKU: BW-2979

ONEAC ON900 UPS High Performance Replacement Battery Set

Sale price $65.99 USD Regular price $96.57
Shipping calculated at checkout.

➤ Includes 4 brand new SigmasTek SP12-7.5HR batteries (12V, 7.5AH)

➤ High rate discharge design for powerful short-term energy output

➤ Valve regulated, spill-proof construction for safe, maintenance-free use

➤ Low self-discharge and high vibration resistance for longer battery life

➤ U.L. recognized, CE certified, with 1-year warranty 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 | 7.5 Ah

Terminal Type

F2

Replacement Battery Set for ONEAC ON900 UPS

Maintain uninterrupted protection for your ONEAC ON900 with this factory-fresh replacement battery set. Built for reliability and tested against OEM standards, these batteries provide the dependable runtime your UPS needs to safeguard critical electronics. When you need a replacement UPS battery that offers high-rate discharge capability combined with robust construction and low self-discharge, this ON900-compatible set is an excellent choice.

Key Specifications

  • Quantity: 4 batteries per set
  • Battery model: SigmasTek SP12-7.5HR
  • Voltage: 12 Volts
  • Capacity: 7.5 AH
  • Terminal type: F2
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Self-discharge: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility note: Requires use of existing cables and hardware from original configuration
  • Brand: SigmasTek (for ONEAC ON900)

Benefits

  • Rugged reliability: The valve-regulated spill-proof design and high vibration resistance ensure dependable operation in common UPS environments.
  • Extended readiness: Low self-discharge extends shelf life and helps maintain charge between service intervals, making this a long-lasting battery option for emergency backup.
  • High-performance UPS battery: Optimized for high rate discharge, these batteries deliver the power bursts required during transfer events and short-duration loads.
  • Safety and compliance: U.L. recognition and CE certification mean these batteries meet recognized safety standards for many installations.
  • Factory-tested assurance: Each replacement set is brand new and tested to meet or exceed OEM performance expectations, so your ONEAC ON900 regains reliable backup capacity.
  • Flexible applications: Well-suited for Uninterruptible Power Supply (UPS) units, emergency power supply systems, and certain battery-powered tools that benefit from short-term high output.
  • Easy swap-in: Designed to match the original configuration—simply reuse your existing cables and hardware when installing the new set in the ON900.

Don’t risk downtime—order this high-performance UPS battery set for your ONEAC ON900 today. With fast shipping, a 1-year warranty, and tested long-lasting battery performance, you’ll restore essential backup power quickly. Buy now to secure reliable protection for your equipment.


Payment & Security

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