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SigmasTek  |  SKU: BW-5338

Eaton Powerware BAT-0058 UPS High Performance Replacement Battery

Sale price $54.00 USD Regular price $78.30
Shipping calculated at checkout.

➤ High Rate Discharge Design supports essential UPS functions

➤ Valve Regulated Spill Proof Construction for safe, maintenance-free use

➤ Low Self-discharge extends battery life in storage

➤ High Vibration Resistance for dependable operation

➤ Certified and covered by a 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 | 18 Ah

Terminal Type

Nut & Bolt

SigmasTek SP12-18HR Replacement UPS Battery for Eaton Powerware BAT-0058

When uptime matters, choose the SigmasTek SP12-18HR replacement UPS battery engineered for the Eaton Powerware BAT-0058. This 12 Volts 18 AH battery provides the necessary high-rate discharge performance for UPS systems that support critical loads during short but intense power events. Trust this high-performance UPS battery for reliable backup power and consistent, safe operation.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-18HR
  • Compatible with: Eaton Powerware BAT-0058
  • Voltage: 12 Volts
  • Capacity: 18 AH (amp-hours)
  • Terminal Type: Nut & Bolt
  • 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

Benefits

This replacement UPS battery delivers durability and dependable runtime. Valve-regulated, spill-proof construction reduces maintenance concerns and improves safety, while low self-discharge extends shelf life and readiness for installation. The high vibration resistance enhances reliability in transport, industrial racks, and environments with mechanical stress.

The SP12-18HR’s high-rate discharge capability makes it especially well-suited for UPS applications, delivering rapid power output when systems transfer loads during an outage. As a long-lasting battery solution rigorously tested to meet or exceed OEM standards, it is also an excellent choice for emergency power supply systems and battery-powered tools that require robust, short-duration output.

For proper installation in your Eaton Powerware BAT-0058, reuse existing cables and hardware from your original configuration. Our technical team verifies compatibility and performance so you can rely on consistent operation and protection for your equipment.

Restore confidence in your backup power—purchase this SigmasTek SP12-18HR replacement UPS battery for Eaton Powerware BAT-0058 today. Fast shipping and a 1 year warranty make it an easy choice to minimize downtime and safeguard sensitive systems.


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