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SigmasTek  |  SKU: BW-4693

Eaton Powerware PW3105-350 UPS Compatible Replacement Battery

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

➤ High Rate Discharge Design supports emergency power needs

➤ Leak-proof, Valve Regulated construction for safety

➤ Low Self-discharge maintains charge longer

➤ High Vibration Resistance for durability

➤ Factory fresh and backed by 1-year warranty


📦🚀 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 SP12-5.5HR Replacement for Eaton Powerware PW3105-350

Keep your Eaton Powerware PW3105-350 running at peak reliability with the SigmasTek SP12-5.5HR replacement UPS battery. This replacement UPS battery is designed for performance and safety, offering dependable power delivery, low maintenance and built-in protections so your critical systems remain online when grid power fails.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-5.5HR
  • Compatibility: Eaton Powerware PW3105-350
  • Voltage: 12 Volts
  • Capacity: 5.5 AH (Amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated, Spill Proof
  • Features: Low Self-discharge; High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Terminal Type: F2

Benefits

The SigmasTek SP12-5.5HR offers proven advantages for users who require a long-lasting battery solution for UPS and emergency power systems. Its high rate discharge profile supplies the burst current needed by UPS electronics during line disturbances, while valve-regulated, spill-proof construction reduces leakage risk and simplifies handling and installation.

Low self-discharge keeps the battery ready for service after storage intervals and reduces maintenance cycles. Designed with high vibration resistance, this unit is resilient in environments where equipment experiences movement or mechanical stress. U.L. recognition and CE certification are further assurances of quality and safety, supporting peace of mind for mission-critical installations.

Typical applications include Uninterruptible Power Supply (UPS) units like the Eaton Powerware PW3105-350, emergency power backup systems, and battery-powered tools requiring short, high-current discharge. Each battery is brand new and factory-fresh, and our technicians test every unit to meet or exceed OEM performance benchmarks.

Upgrade your backup power now — order the SigmasTek SP12-5.5HR replacement UPS battery for Eaton Powerware PW3105-350 and secure a high-performance, long-lasting battery backed by a one-year warranty. Fast shipping available for in-stock items.



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