Welcome to our store. Your trusted source for batteries and power solutions. Learn more

For support or quotes: sales@batteryweb.com

WELCOME5
SigmasTek  |  SKU: BW-2102

Best Technologies LI 1800 UPS High Performance Replacement Battery Set 32.67 lb

21% off
New arrival
Sale price $176.99 USD Regular price $222.99
Shipping calculated at checkout.
Includes 8 brand new SigmasTek SP6-12HR batteries (6V 12AH) for Best Technologies LI 1800 UPS
Designed for high rate discharge UPS applications needing quick power bursts
Spill-proof, valve regulated design minimizes maintenance and leakage
Low self-discharge and vibration resistance enhance durability
Factory fresh with 1-year warranty and guaranteed OEM compatibility
In stock

— Ready to ship immediately

Free shipping

Visa Mastercard American Express PayPal Apple Pay Google Pay Shop Pay Discover Klarna Afterpay Stripe

Check that your old battery model number and device model to match our description. This makes sure they work together.


We ship your order same day if you buy it before 4 PM EST.

Send Your Battery Photo

Expert Technician 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 BATTERY IMAGE
Product & Solutions Expert

Product & Solutions Expert

✉ sales@batteryweb.com

🔹 10+ Years Battery Experience 🔹 Fast & Accurate Identification

Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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.


Volts & Amps

6 Volts | 12 Ah

Terminal Type

F2

SigmasTek SP6-12HR Replacement Battery Set — Compatible with Best Technologies LI 1800 UPS

Restore reliable backup power for your Best Technologies LI 1800 with this purpose-built replacement UPS battery set. Each kit includes factory-fresh SigmasTek SP6-12HR batteries matched to the LI 1800’s specifications for high-rate discharge performance, low self-discharge, and robust vibration resistance. These batteries deliver the dependable runtime and consistent output required for servers, network closets, and emergency power installations.

Key Specifications

  • Compatible UPS model: Best Technologies LI 1800
  • Included quantity: 8 batteries
  • Battery model: SigmasTek SP6-12HR
  • Voltage: 6 Volts
  • Capacity: 12 AH (Amp-hours)
  • Terminal type: F2
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated, Spill Proof
  • Features: Low Self-discharge, High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Important note: Requires reuse of existing cables and hardware from original configuration

Benefits

When your Best Technologies LI 1800 needs dependable battery replacement, these SigmasTek cells provide a high-performance UPS battery option built for both power and longevity. The high rate discharge design supplies the extra current needed during short-duration, high-load events — ideal for keeping critical equipment online during outages. Low self-discharge ensures the pack retains charge while in storage, contributing to a long-lasting battery investment.

Constructed to be valve-regulated and spill-proof, the batteries are safe for indoor environments and reduce maintenance worries. High vibration resistance and recognized safety certifications (U.L. and CE) provide additional confidence for rack-mounted UPS systems and industrial applications. Common uses include uninterruptible power supply units, emergency power systems, and battery-powered tools that benefit from a reliable backup source.

Our experienced technicians test each set to verify performance and compatibility with the LI 1800. If you need assistance, contact customer service at or email for expert help selecting and installing your replacement UPS battery pack.

Don’t wait until the next outage—purchase this high-performance, long-lasting battery set for your Best Technologies LI 1800 today and restore dependable backup power.

Technical Specifications

Voltage6 Volts
Amp Hours12 Ah
Terminal TypeF2
Length (in.)5.95
Width (in.)2.0
Height (in.)3.7
Weight (lb.)32.64

Product Highlights

  • Brand Replacement : Best Technologies
  • Manufacturer: SigmasTek
  • Product Type: UPS Batteries
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • 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.