For support or quotes: sales@batteryweb.com

🎉 First Order : Get 10% OFF! 🎉

WELCOME10
SigmasTek  |  SKU: BW-4735

Belkin F6350 UPS Compatible Replacement Battery

Sale price $10.43 USD Regular price $13.18
Shipping calculated at checkout.

➤ High rate discharge design for powerful short-term output

➤ Valve regulated, spill proof construction for safe use

➤ Low self-discharge extends battery life in storage

➤ High vibration resistance ensures durability under stress

➤ U.L. recognized and CE certified for quality assurance


📦🚀 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.

📸 Send Your Battery Photo / Unsure? Expert 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 IMAGE

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 | 5.5 Ah

Terminal Type

F2

SigmasTek SP12-5.5HR Replacement for Belkin F6350 UPS

Bring your Belkin F6350 Uninterruptible Power Supply (UPS) back to full protection with the SigmasTek SP12-5.5HR replacement battery. This replacement UPS battery offers tested, dependable performance that restores runtime and safeguards sensitive electronics during power interruptions. To ensure proper installation, please reuse the cables and hardware from your original battery configuration.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-5.5HR
  • Voltage: 12 Volts
  • Capacity: 5.5 Ah (Amp-hours)
  • High Rate Discharge Design
  • Valve Regulated, Spill Proof Construction
  • Low Self-discharge
  • High Vibration Resistance
  • U.L. Recognized
  • CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatibility: Replacement for Belkin F6350 UPS unit
  • Installation note: Use all existing cables and hardware from your original configuration

Benefits

This SigmasTek high-performance UPS battery is built to offer a combination of reliability, safety, and rugged performance. Its high rate discharge design supports short bursts of elevated power output—useful for maintaining uptime through startup loads and transient events. The valve regulated, spill proof construction minimizes maintenance concerns and enhances safety when installed inside enclosed UPS compartments or cabinets.

Low self-discharge helps retain charge over prolonged storage or intermittent use, so the battery is ready when emergency power is required. High vibration resistance contributes to longer service life in environments with mechanical activity or movement. Certified by U.L. and CE, this unit meets recognized standards for safety and performance. As a replacement for the Belkin F6350, it is an excellent long-lasting battery for uninterruptible power supply units, emergency power systems, and compatible battery powered tools that require dependable short-term energy delivery.

Each battery ships brand new and factory fresh, is tested to meet or exceed OEM specifications, and includes a 1 year warranty for peace of mind. These features make it an ideal choice for anyone seeking a dependable replacement UPS battery that balances value and performance.

Don’t wait for the next outage—purchase the SigmasTek SP12-5.5HR replacement UPS battery for your Belkin F6350 today and secure reliable, long-lasting battery protection backed by tested quality and warranty coverage.



Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.