OPTI-UPS PS1100 / 1100PS UPS High Performance Compatible Replacement Battery Set 14.51 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.
OPTI-UPS PS1100 / 1100PS UPS High Performance Compatible 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.
SigmasTek 12 Volts 12 Ah F2 OPTI-UPS — Compatible with PS1100
The SigmasTek 12 Volts 12 Ah F2 OPTI-UPS replacement is engineered for reliable compatibility with the PS1100 UPS model. This high-performance UPS battery delivers consistent power delivery, dependable recharge capability, and the kind of build quality that data centers, home offices, and small businesses expect. Designed and labeled to match the PS1100’s power requirements, this battery offers a dependable substitute when the original pack reaches end of life or when you need a fail-safe replacement for uninterrupted operation.
Key Specifications
- Brand: SigmasTek
- Voltage: 12 Volts
- Capacity: 12 Ah
- Terminal Type: F2
- Compatible UPS Model: PS1100
- Product Type: OPTI-UPS replacement
Benefits
Choose this replacement UPS battery to restore or improve the runtime of your PS1100 UPS. As a high-performance UPS battery option, it is built to provide steady output under varying load conditions and to resist the degradation that can shorten battery life. The 12 Ah capacity balances compact size with substantial energy storage, making it a practical, long-lasting battery solution for daily critical-power needs.
Durability is a central focus of this SigmasTek unit. The robust construction and secure F2 terminal connections reduce the risk of poor contacts and premature failure, which helps extend service life in both routine and demanding conditions. Regular maintenance is simplified thanks to the standardized form factor, and the battery is suitable for fast swaps in rack-mounted or standalone PS1100 systems.
Typical applications include UPS backup for servers and network equipment, emergency power systems for communication devices, and supplemental power for tools and critical controls where loss of power would cause costly downtime. Because it is a long-lasting battery designed for the PS1100, it provides a cost-effective way to maintain uptime without replacing the entire UPS unit.
Whether you are replacing an aged battery or stocking spares for quick service, this SigmasTek 12 Volts 12 Ah F2 OPTI-UPS unit is an effective, high-performance UPS battery choice that targets reliability and value.
Ready to restore reliable power to your PS1100? Add this replacement UPS battery to your cart now and secure continuous protection for your equipment.
Technical Specifications
Product Highlights
- Brand Replacement : OPTI-UPS PS1100
- 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.




