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SigmasTek  |  SKU: BW-4661

Tripp Lite INTERNET350U UPS UPS 12V 5.5AH High Performance Replacement Batteries

Sale price $11.99 USD Regular price $16.90
Shipping calculated at checkout.

➤ Absorbent Glass Mat (AGM) technology for reliable power delivery

➤ High rate discharge design supports short bursts of high power

➤ Maintenance-free and spill-proof construction for hassle-free use

➤ U.L. Recognized and CE Certified ensuring safety and quality

➤ Includes 1 year warranty with brand new, factory fresh battery


📦🚀 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.

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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 Replacement Battery for Tripp Lite INTERNET350U UPS

This replacement UPS battery is engineered for reliable compatibility with the Tripp Lite INTERNET350U UPS model, delivering the performance and dependability you expect from a premium replacement UPS battery. Built with proven Absorbent Glass Mat (AGM) technology and a high-rate discharge design, this long-lasting battery provides stable backup power for network gear, home office systems, and small business UPS installations. Install with confidence knowing the battery meets or exceeds OEM SLA battery specifications and is brand new, factory fresh.

Key Specifications

  • Compatible UPS Model: Tripp Lite INTERNET350U
  • Battery Brand: SigmasTek
  • Battery Type: SLA (Sealed Lead Acid) / Absorbent Glass Mat (AGM) Technology
  • Voltage: 12 Volts
  • Capacity: 5.5 Ah
  • Terminal Type: F2
  • Design: High Rate Discharge Design
  • Construction: Maintenance-Free Design with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

This high-performance UPS battery is manufactured to provide robust, consistent output during critical moments. The AGM construction offers maintenance-free operation and a spill-proof design for safe indoor use, making it ideal for confined UPS compartments. The high-rate discharge design supports short-duration, higher-power draws which are common during UPS transfer events, ensuring connected devices remain protected when utility power fails.

Durability and long life are core advantages of this replacement battery. Built to be vibration resistant and designed for low self-discharge characteristics common to quality sealed lead-acid cells, it stores reliably and performs when needed. The included U.L. recognition and CE certification provide additional assurance of safety and manufacturing quality.

Typical applications include providing emergency power for small network appliances, routers, VoIP equipment, and point-of-sale systems connected to the Tripp Lite INTERNET350U. It is also well suited for battery-powered tools and short-duration power events where a dependable, long-lasting battery is required. If you need a high-performance UPS battery to restore runtime and maintain uptime, this SigmasTek replacement is an ideal choice.

Ready to upgrade your Tripp Lite INTERNET350U with a reliable, long-lasting replacement UPS battery? Purchase now to secure the best price and fast shipment — protect your devices and restore peace of mind today.


Payment & Security

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