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SigmasTek  |  SKU: BW-4946

Deltec 2066 UPS Compatible Replacement Battery Set

Sale price $780.00 USD Regular price $1,131.00
Shipping calculated at checkout.

➤ Includes 10 SigmasTek SP12-26 NB batteries (12V 26AH)

➤ High rate discharge for reliable UPS power backup

➤ Valve regulated and spill-proof design

➤ Low self-discharge extends battery readiness

➤ U.L. recognized and CE certified with 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 | 26 Ah

Terminal Type

Nut & Bolt

SigmasTek SP12-26 NB Replacement Battery Set for Deltec 2066 UPS

This replacement UPS battery set is engineered for the Deltec 2066 Uninterruptible Power Supply (UPS). Designed to deliver reliable performance, rapid high-rate discharge when your equipment demands it, and consistent operation under vibration and everyday use. These brand new, factory fresh SigmasTek SP12-26 NB batteries provide a dependable solution when you need a trusted replacement UPS battery for the Deltec 2066, giving you the confidence of tested components and certified safety approvals for critical backup applications.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-26 NB
  • Quantity: Set of 10 batteries included
  • Voltage: 12 Volts
  • Capacity: 26 AH
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge; High Vibration Resistance; Superior Performance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

When replacing batteries in your Deltec 2066, choose a high-performance UPS battery solution that combines rugged construction with reliable energy delivery. These SigmasTek units are purpose-built for high rate discharge applications, meaning they can supply higher power output for short durations without compromising stability — ideal for UPS systems that must sustain critical loads during transitional periods. The valve-regulated, spill-proof construction reduces maintenance concerns, while low self-discharge preserves capacity during storage, making this an excellent long-lasting battery option.

Durability is emphasized through high vibration resistance and UL/CE recognition, so the set stands up to demanding environments and repeated cycling. As a replacement UPS battery package, this set is suitable for the Deltec 2066 in typical UPS roles, emergency power systems, and battery-powered tools or equipment that rely on short bursts of high power. Because the batteries are factory fresh and individually tested, you receive a long-lasting battery solution backed by a one-year warranty.

Installation is straightforward for experienced technicians: you must reuse all existing cables and hardware from your original configuration to connect the new UPS batteries in the Deltec 2066. Our technical team tests every unit to meet or exceed OEM specifications, ensuring you get a reliable, high-performance UPS battery replacement that keeps your critical systems online.

Ready to restore dependable backup power? Order this SigmasTek SP12-26 NB replacement UPS battery set for the Deltec 2066 today and take advantage of fast shipping and expert support. For assistance, call our customer service at or e-mail us. Buy now to secure a durable, long-lasting battery solution.


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