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SigmasTek  |  SKU: BW-2116

Safe 425A UPS High Performance Replacement Battery Set

Sale price $65.99 USD Regular price $96.19
Shipping calculated at checkout.

➤ Includes 4 fresh SigmasTek SP6-12HR batteries (6V 12AH) for Safe 425A UPS

➤ High rate discharge batteries designed for quick power bursts

➤ Valve regulated and spill-proof for leak-free operation

➤ Low self-discharge and vibration resistant for long-lasting reliability

➤ Factory tested to meet OEM specifications with 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

6 Volts | 12 Ah

Terminal Type

F2

SigmasTek SP6-12HR Replacement Battery Set for Safe 425A UPS

Ensure uninterrupted runtime and reliable backup power with this brand new replacement UPS battery set designed specifically for the Safe 425A UPS. This 4-pack of SigmasTek SP6-12HR batteries delivers dependable performance, low self-discharge and high vibration resistance — ideal when you need a high-performance UPS battery that restores your system to OEM-level reliability. Designed for high rate discharge applications, these batteries provide the surge capacity required during short periods of heavy load while offering the long-lasting battery life you expect from factory-fresh components.

Key Specifications

  • Battery Model: SigmasTek SP6-12HR
  • Quantity: 4 batteries per set
  • Voltage: 6 Volts
  • Capacity: 12 AH (amp-hours)
  • Terminal Type: F2
  • Compatible UPS Model: Safe 425A
  • 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
  • Typical Applications: Uninterruptible Power Supply (UPS) Units, Emergency Power Supply, Battery Powered Tools
  • Seller Testing: Technically tested to meet or exceed OEM specifications

Benefits

  • Durability: Built with valve-regulated, spill-proof construction and high vibration resistance to withstand demanding installation environments and frequent handling.
  • Long Life: Low self-discharge chemistry and factory-fresh condition help preserve charge and shelf life so your replacement UPS battery is ready when you need it.
  • High Performance: The high rate discharge design supplies short bursts of increased power, making these batteries ideal for UPS systems that demand substantial output during switchover or fault conditions.
  • Safe and Certified: U.L. Recognition and CE certification provide assurance that the battery set complies with safety and manufacturing standards.
  • Versatile Applications: Perfect for Safe 425A UPS units, emergency power systems, and many battery-powered tools where a compact 6V 12AH battery is required.
  • Easy Installation: This set uses your existing cables and hardware from the original configuration—simply replace the old batteries to restore full runtime and capacity.

Ready to upgrade your Safe 425A with a reliable, high-performance UPS battery set? Order this SigmasTek replacement today and enjoy fast shipping on in-stock items, backed by a 1 year warranty and support from our experienced customer service team. Buy now to secure long-lasting battery protection for your critical equipment.


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