Best Power FERRUPS FD 4.3KVA UPS High Performance Replacement Battery Set 98.89 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.
Best Power FERRUPS FD 4.3KVA 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.
Volts & Amps
12 Volts | 35 AH
Terminal Type
Nut & Bolt
Replacement SigmasTek SP12-35 NB Battery Set for Best Power FERRUPS FD 4.3KVA
Restore full runtime to your Best Power FERRUPS FD 4.3KVA with this compatible, high-performance replacement UPS battery set. Designed for reliability and tested to meet OEM expectations, this four-battery pack provides consistent power delivery, low self-discharge, and rugged performance in a compact, maintenance-friendly package.
Key Specifications
- Battery model: SigmasTek SP12-35 NB
- Quantity: 4 batteries per set
- Voltage: 12 Volts
- Capacity: 35 AH (Amp-hours)
- Terminal type: Nut & Bolt
- Design: High Rate Discharge Design
- Construction: Valve Regulated Spill Proof Construction
- Features: Low Self-discharge, High Vibration Resistance
- Certifications: U.L. Recognized and CE Certified
- Condition: Brand New, Factory Fresh
- Warranty: 1 Year Warranty
- Compatible UPS model: Best Power FERRUPS FD 4.3KVA
Benefits
This replacement UPS battery set emphasizes durability and high output when you need it most. The high rate discharge design enables superior short-term power delivery for UPS transfer events and demanding loads, while valve-regulated, spill-proof construction reduces leakage risk and maintenance. Low self-discharge ensures stored energy is maintained during standby periods, and high vibration resistance helps the cells survive transportation and installation in busy environments. Certified by U.L. and CE, these batteries meet recognized safety and performance standards.
As a high-performance UPS battery option, this set is ideal for Uninterruptible Power Supply units, emergency backup systems, and battery-powered tools requiring short bursts of elevated power. The brand-new, factory-fresh condition and one-year warranty offer peace of mind for technicians and system owners seeking a reliable replacement. Our testing protocols ensure these batteries meet or exceed OEM specifications for the Best Power FERRUPS FD 4.3KVA.
Installation uses your existing cables and hardware from the original configuration. Order this replacement UPS battery set now to secure a long-lasting battery solution that restores runtime and protects critical equipment connected to your Best Power FERRUPS FD 4.3KVA.
Technical Specifications
Product Highlights
- Brand Replacement : Best Power
- 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.




