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-5016

Deltec 2036C UPS Compatible Replacement Battery Set

Sale price $232.81 USD Regular price $337.58
Shipping calculated at checkout.

➤ Includes 8 high capacity 12V 18AH batteries for extended runtime

➤ High rate discharge design for reliable performance under load

➤ Valve regulated spill proof construction for safe use

➤ Low self-discharge preserves power during storage

➤ Factory fresh with 1 year warranty and tested to OEM specs


📦🚀 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 | 18 Ah

Terminal Type

Nut & Bolt

Replacement Battery Set for Deltec 2036C - 6x SigmasTek SP12-18HR (Deltec 2036C)

Designed specifically for the Deltec 2036C, this replacement UPS battery set delivers reliable compatibility, robust performance, and proven reliability for your critical power needs. The set includes six SigmasTek SP12-18HR batteries engineered for high rate discharge scenarios where short bursts of elevated power are required. Whether you need a replacement UPS battery to restore runtime in a data center rack, a high-performance UPS battery for sensitive equipment, or a long-lasting battery option for emergency power, this Deltec 2036C replacement set provides the dependable power you expect.

Key Specifications

  • Compatible UPS model: Deltec 2036C
  • Included batteries: 6 x SigmasTek SP12-18HR
  • Battery voltage: 12 Volts
  • Capacity: 18 AH
  • 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
  • Terminal type: Nut & Bolt
  • Warranty: 1 Year Warranty

Benefits

Upgrading your Deltec 2036C with this replacement UPS battery set restores dependable backup power while offering clear benefits in durability, performance, and lifecycle. The high rate discharge design ensures the pack can supply elevated current for brief periods when equipment demands spike, making it a high-performance UPS battery solution for servers, telecom gear, and other critical systems. Valve regulated, spill-proof construction reduces maintenance and leakage risk, delivering a clean, safer installation that resists vibration and physical stress for extended service life.

Our technical team individually tests each battery to ensure it meets or exceeds OEM specifications, so you receive a consistent, long-lasting battery that performs well under load. Applications include Uninterruptible Power Supply (UPS) units, emergency power supply setups, and battery-powered tools. If you’re replacing an aging battery pack or preparing spare units for rapid swapouts, this replacement UPS battery set for the Deltec 2036C is a dependable choice that balances performance and value.

Installation note: you must reuse the existing cables and hardware from your original configuration to connect these new UPS batteries. Orders for in-stock items are typically shipped within 24 hours, and customer support is available to help with selection or fit questions.

Ready to restore reliable backup power? Purchase this high-performance UPS battery replacement for the Deltec 2036C today and get superior long-lasting battery performance backed by our one-year warranty.


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.