For questions, quotes, or help finding the right battery, feel free to email us at sales@batteryweb.com

New collections added! Learn more

🎉 First Order Special 🎉

First-time shoppers get 5% OFF on batteries & accessories!

WELCOME5
SigmasTek  |  SKU: BW-3711

Alpha Technologies Tetrex 1000 High Performance UPS Replacement Battery Set

Sale price $33.31 USD Regular price $48.30
Shipping calculated at checkout.

➤ Set contains two factory fresh SigmasTek 12V 7.5 AH UPS replacement batteries

➤ High rate discharge for short bursts of high power output in UPS units

➤ Valve regulated and spill-proof to ensure safe, maintenance-free operation

➤ Certified by U.L. and CE for quality and safety compliance

➤ Backed by a 1-year warranty for dependable performance


📦🚀 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.

📸 Send Your Battery Photo / Unsure? Expert Help

Snap a photo or video of your battery and send it to us. We'll identify the exact replacement—fast and hassle-free. Our team has helped thousands of customers find the right battery quickly and easily.
POST YOUR IMAGE

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 | 7.5 Ah

Terminal Type

F2

Replacement Battery Set for Alpha Technologies Tetrex 1000 UPS

Designed specifically for the Alpha Technologies Tetrex 1000, this replacement battery set delivers reliable compatibility, exceptional performance, and proven reliability for mission-critical UPS systems. Each set includes two SigmasTek SP12-7.5HR batteries (12 Volts, 7.5 AH) engineered for high rate discharge applications where short bursts of higher power are required. If you need a dependable replacement UPS battery that restores runtime and protects sensitive equipment, these brand new, factory fresh batteries provide the confidence and performance your Tetrex 1000 demands.

Key Specifications

  • Compatible UPS Model: Alpha Technologies Tetrex 1000
  • Battery Model: SigmasTek SP12-7.5HR
  • Quantity: 2 batteries per set
  • Voltage: 12 Volts
  • Capacity: 7.5 AH
  • Terminal Type: F2
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge
  • Durability: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

These batteries are built for durability and dependable service in environments where power continuity matters. The valve regulated, spill-proof construction and high vibration resistance make this replacement UPS battery ideal for rackmount and tower UPS installations like the Alpha Technologies Tetrex 1000. The high rate discharge design ensures the battery can deliver the peak power necessary for brief, intense loads while maintaining long-term reliability. Low self-discharge characteristics help preserve stored energy during standby periods, so the unit is ready when you need it most.

As a high-performance UPS battery option, this set supports a variety of applications beyond UPS units — including emergency power supply systems and battery-powered tools that require dependable short-term power bursts. Technically tested to meet or exceed OEM specifications, these batteries offer the combination of long-lasting battery life and superior performance required by IT racks, telecom closets, and other critical infrastructures.

Installation is straightforward when replacing the pack in your Tetrex 1000 — please reuse all existing cables and hardware from your original configuration to ensure proper connection. Our experienced staff tests each battery set and ships most in-stock orders within 24 hours.

Ready to restore reliable runtime to your Alpha Technologies Tetrex 1000? Buy this high-performance, long-lasting replacement UPS battery set today and protect your devices with batteries you can trust.


Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.