For questions, quotes, or help finding the right battery, feel free to email us at sales@batteryweb.com or give us a call at +1 817-210-3321

🎉 First Order Special 🎉

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

WELCOME5
SigmasTek  |  SKU: BW-16298

IBT Technologies BT2.9-12 High Performance Replacement Battery

Sale price $18.99 USD Regular price $29.37
Shipping calculated at checkout.

➤ Absorbent Glass Mat (AGM) technology for enhanced durability and performance

➤ Maintenance-free design with spill-proof construction for worry-free use

➤ U.L. Recognized and CE Certified to ensure safety and quality standards

➤ Brand new and factory fresh for reliable, long-lasting power

➤ Backed by a 1-year warranty for peace of mind and guaranteed compatibility


📦🚀 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 | 2.9 AH

Terminal Type

F1

IBT Technologies BT2.9-12 Replacement Battery — Compatible with IBT Technologies BT2.9-12

Upgrade your power backup with this replacement battery for the IBT Technologies BT2.9-12. Engineered for compatibility, dependable performance, and consistent reliability, this Sealed Lead Acid (SLA) battery delivers the steady power your devices expect. Whether you need a dependable replacement for UPS systems, emergency lighting, or portable equipment, this high-performance battery is built to meet or exceed the OEM IBT Technologies BT2.9-12 specifications while offering a cost-effective, long-lasting battery solution.

Key Specifications

  • Compatible Model: IBT Technologies BT2.9-12
  • Battery Type: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Design: Maintenance-Free with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Product Line: IBT Technologies BT2.9-12 Battery (Replacement) *SigmasTek*12 Volts2.9 AHF1

Benefits

This replacement battery provides superior durability and dependable performance. The AGM technology offers sealed, maintenance-free operation that resists vibration and reduces the risk of leaks, making it ideal for demanding environments. As a high-performance battery, it supports consistent output for extended periods and helps stabilize power during peak demand. The maintenance-free design and spill-proof construction reduce upkeep and risk, so you can install it quickly and trust it to perform.

Expect a long-lasting battery life when used in typical applications such as uninterruptible power supplies (UPS), emergency lighting systems, security alarms, and portable tools. The U.L. recognition and CE certification mean the product meets strict safety and quality standards. Whether you are replacing an OEM IBT Technologies part or upgrading your existing battery bank, this replacement battery is designed to deliver reliable service and consistent energy delivery.

With a factory-fresh build and a 1 year warranty, this IBT Technologies BT2.9-12 compatible battery gives you confidence in both performance and value. If you need a cost-effective substitute that does not compromise on compatibility or reliability, this product is an excellent choice.

Ready to replace your old battery? Purchase this IBT Technologies BT2.9-12 replacement battery now and enjoy a high-performance, long-lasting battery that keeps your systems running when it matters most.


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.