Best Power FERRUPS FD 4.3KVA 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 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
Best Power FERRUPS FD 4.3KVA Replacement UPS Battery (Compatible with Best Power FERRUPS FD 4.3KVA)
Keep your Best Power FERRUPS FD 4.3KVA running at peak reliability with this complete replacement UPS battery set. These 12V 35AH batteries incorporate Absorption Glass Mat (AGM) sealed technology to provide maintenance-free, stable power for sensitive electronics and critical systems. Sourced by ReplaceUPSBattery.com and UL certified, the four-battery pack matches or exceeds original manufacturer specifications to restore your UPS to dependable operation.
Key Specifications
- Package contains: 4 batteries (price includes all 4)
- Chemistry: SLA (Sealed Lead Acid)
- Battery Technology: AGM (Absorption Glass Mat)
- Compatibility: Guaranteed compatibility with original battery set for Best Power FERRUPS FD 4.3KVA
- Warranty: 1-year Warranty
- Volts: 12 V
- Amp Hours: 35 AH
- Weight: 98.8 Lbs (as specified)
- Length: 7.72 In
- Width: 5.14 In
- Height: 6.14 In
- Terminal: NB (Nut & Bolt)
- Brand: SigmasTek
- Certifications: UL certified
- Shipping Methods: UPS Ground and USPS; we ship in 1 business day for all in-stock items
- Installation: Install in same original configuration and reuse existing cables and hardware
Benefits
- Durability: AGM sealed batteries minimize maintenance and resist leakage, delivering dependable service in a variety of environments.
- Long life: Built to meet or exceed OEM specifications, providing a long-lasting battery solution that preserves uptime and reliability.
- High performance: Stable output under load protects connected equipment from disruptions and ensures smooth UPS operation.
- Safety-first design: UL certification and SLA chemistry provide industry-standard safety and compliance for commercial and residential use.
- Straightforward replacement: Supplied as a full four-battery pack to match the original Best Power configuration—reuse your existing connectors to simplify installation.
- Typical applications: Ideal for UPS backup, emergency power systems, and tools or equipment that depend on steady reserve power.
- Optimized value: Replacing the entire set maintains balanced charging and extends the useful life of your UPS battery pack.
Ready to replace your depleted batteries? Order this high-performance UPS battery set for the Best Power FERRUPS FD 4.3KVA now for fast shipping and a 1-year warranty. If you need assistance, contact our customer service team at (800) 657-1303 and we’ll help you get the right replacement UPS battery for your needs.
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.




