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SigmasTek  |  SKU: BW-4702

CyberPower UP425 High Performance Compatible SLA Replacement Battery

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

➤ SigmasTek SP12-5.5HR battery (12V, 5.5 AH) replacement

➤ High rate discharge for reliable UPS operation

➤ Valve regulated spill-proof design for safe handling

➤ Low self-discharge maintains charge longer

➤ Brand new with 1-year warranty and OEM specification compliance


📦🚀 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 CyberPower UP425

Restore dependable runtime and protect your equipment with the SigmasTek SP12-5.5HR replacement for the CyberPower UP425. This replacement UPS battery is engineered to provide reliable compatibility, exceptional short-burst power, and the safety features required for critical backup systems. If your CyberPower UP425 needs a high-quality, high-performance UPS battery, this SigmasTek unit offers the performance and reliability to keep systems running when they matter most.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-5.5HR
  • Voltage: 12 Volts
  • Capacity: 5.5 AH
  • Terminal: F2
  • Battery Type: SLA (Sealed Lead Acid)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Feature: Low Self-discharge
  • Feature: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatible With: CyberPower UP425 UPS units

Benefits

The SigmasTek SP12-5.5HR offers long-lasting battery performance and superior durability thanks to its valve-regulated, spill-proof construction and low self-discharge chemistry. Designed as a high-performance UPS battery, it supports high rate discharge scenarios where the CyberPower UP425 must deliver elevated power for brief intervals, such as during generator handoffs, multiple equipment startups, or short large-load events. Its high vibration resistance makes it well-suited for environments where devices may experience movement or mechanical stress.

Applications for this replacement UPS battery include Uninterruptible Power Supply (UPS) systems, emergency power supply units, and battery-powered tools that need a compact, reliable power source. Whether maintaining your home office backup, protecting network equipment, or ensuring emergency lighting stays active, this SigmasTek unit provides the dependable output and lifecycle you require.

The SP12-5.5HR is brand new, factory fresh, and tested to meet or exceed original equipment specifications, giving you confidence in both compatibility and performance. Certified to U.L. and CE standards and backed by a one-year warranty, it is an ideal choice for anyone seeking a long-lasting battery replacement for a CyberPower UP425.

Don’t wait until your UPS fails—order the SigmasTek SP12-5.5HR replacement UPS battery for your CyberPower UP425 today and secure reliable backup power and protection.



Payment & Security

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