ONEAC ON2000J-SN UPS High Performance Replacement Battery Set 50.64 lb
— Ready to ship immediately
Check that your old battery model number and device model to match our description. This makes sure they work together.
We ship your order same day if you buy it before 4 PM EST.
ONEAC ON2000J-SN UPS High Performance Replacement Battery Set is backordered and will ship as soon as it is back in stock.
Let customers speak for us
Send Your Battery Photo
Expert Technician Help
Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR BATTERY IMAGE
Product & Solutions Expert
✉ sales@batteryweb.com
Battery Care Tips
Battery Care Tips
🔹 Getting Started
Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.
🔹 Keep It Healthy
Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.
Delivery and Shipping
Delivery and Shipping
🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.
Disclaimer
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.
Category
Brand Replacement
SigmasTek
Volts & Amps
12 Volts | 18 Ah
Terminal Type
Nut & Bolt
Replacement Battery Set for ONEAC ON2000J-SN (4 SigmasTek SP12-18HR)
Ensure uninterrupted operation of your ONEAC ON2000J-SN with this reliable replacement battery set engineered for compatibility and dependable output. This set includes four SigmasTek SP12-18HR batteries (12 Volts, 18 AH) designed for high-rate discharge UPS requirements. If you need a replacement UPS battery that balances performance and longevity, this high-performance UPS battery kit offers the reliable energy reserve your system needs.
Key Specifications
- Included Batteries: 4 x SigmasTek SP12-18HR
- Voltage: 12 Volts (each)
- Capacity: 18 AH (amp-hours) (each)
- Terminal Type: Nut & Bolt
- Design: High Rate Discharge Design
- Construction: Valve Regulated, Spill Proof
- 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
- Installation Note: Requires reuse of existing cables and hardware from original configuration
- Brand: SigmasTek
- Compatible UPS Model: ONEAC ON2000J-SN
Benefits
- Dependable durability — The valve-regulated, spill-proof design combined with high vibration resistance ensures these batteries maintain integrity and function in a variety of UPS installations.
- Long-lasting reliability — Low self-discharge preserves energy until installation, offering a long-lasting battery solution that minimizes the frequency of replacements.
- Exceptional power performance — With a high rate discharge design, these batteries support brief periods of high power draw, making them an ideal high-performance UPS battery option.
- Multipurpose use — Well suited for Uninterruptible Power Supply (UPS) units, emergency power supply scenarios, and battery-powered tools where dependable, immediate energy is required.
- Tested for quality — Our technicians individually test each replacement UPS battery to confirm performance that meets or exceeds OEM specifications for the ONEAC ON2000J-SN.
Ready to upgrade your backup power? Purchase this replacement UPS battery set for the ONEAC ON2000J-SN today to restore reliable performance. Fast shipping for in-stock items and a 1 year warranty ensure you get a long-lasting battery solution with confidence. Buy now to protect your critical systems.
Technical Specifications
Product Highlights
- Brand Replacement : ONEAC ON2000J-SN
- Manufacturer: SigmasTek
- Product Type: UPS Batteries
- Warranty: 12 Months
- Bulk Orders: sales@batteryweb.com
Payment & Security
Payment methods
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.




