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SigmasTek  |  SKU: BW-4520

Best Power LI 360 UPS High Performance Replacement Battery Set

Sale price $20.87 USD Regular price $26.36
Shipping calculated at checkout.

➤ Includes 2 brand new SigmasTek SP12-5.5HR batteries (12V 5.5AH)

➤ Designed for high rate discharge UPS applications requiring quick power bursts

➤ Valve regulated, spill-proof, and highly vibration resistant design

➤ Low self-discharge extends battery readiness and performance

➤ Certified by U.L. and CE, backed 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 | 5.5 Ah

Terminal Type

F2

SigmasTek SP12-5.5HR Replacement Battery Set for Best Power LI 360

Ensure continuous protection for your Best Power LI 360 with this brand new replacement UPS battery set. Specifically matched to meet the power and discharge needs of the LI 360, these SigmasTek batteries deliver the reliable performance and durability necessary for UPS systems, emergency power supplies, and battery-powered tools. Choose a long-lasting battery option to restore runtime and keep critical systems online during outages.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-5.5HR
  • Quantity: 2 batteries per set
  • Voltage: 12 Volts
  • Capacity: 5.5 AH (amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof
  • Features: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year
  • Compatible With: Best Power LI 360 UPS unit
  • Applications: Uninterruptible Power Supply (UPS) Units, Emergency Power Supply, Battery Powered Tools

Benefits

This replacement UPS battery set combines rugged construction with tested performance to deliver a dependable, long-lasting battery solution. The valve-regulated, spill-proof build ensures safe, maintenance-friendly operation, while low self-discharge keeps capacity available after storage periods. The high rate discharge design is ideal for UPS applications where brief periods of higher power output are required to support connected equipment, giving your Best Power LI 360 the surge capability it needs during critical moments.

Designed to resist vibration and mechanical stress, these batteries are well-suited for a variety of installations, from server rooms and telecom closets to portable emergency kits. Each unit is factory fresh, U.L. recognized and CE certified, and supported by a 1 year warranty. The result is a high-performance UPS battery set that helps protect hardware, data, and operations from unexpected power interruptions.

Installation note: reuse all existing cables and hardware from your original configuration when connecting these replacement batteries in your Best Power LI 360. For assistance, call . In-stock orders typically ship within 24 hours.

Take action now—order this high-performance, long-lasting replacement UPS battery set for your Best Power LI 360 and secure reliable backup power for your critical systems.



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