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SigmasTek  |  SKU: BW-5544

Best Technologies BAT-0103 UPS High-Performance Compatible Replacement Battery

Sale price $216.64 USD Regular price $314.12
Shipping calculated at checkout.

➤ Valve Regulated Spill Proof for safe and clean operation

➤ High Rate Discharge supports high power demands over short periods

➤ Low Self-discharge ensures readiness after storage

➤ High Vibration Resistance for use in mobile or rugged environments

➤ Certified for safety and 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.

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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 | 100 Ah

Terminal Type

Internal Thread

SigmasTek SP12-100 IT Replacement for Best Technologies BAT-0103 UPS

The SigmasTek SP12-100 IT replacement UPS battery is a compatible, high-quality option for the Best Technologies BAT-0103 UPS. This 12 Volts 100 AH unit is built for durability, consistent output, and reliable service in UPS and emergency power applications. To ensure proper installation, please use all existing cables and hardware from your original BAT-0103 configuration when connecting this replacement UPS battery.

Key Specifications

  • Battery model: SigmasTek SP12-100 IT
  • Voltage: 12 Volts
  • Capacity: 100 AH (Amp-hours)
  • Terminal type: Internal Thread
  • 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
  • Warranty: 1 Year Warranty
  • Compatible with: Best Technologies BAT-0103 UPS
  • Installation note: Requires use of existing cables and hardware from original configuration
  • Brand: SigmasTek

Benefits

As a replacement UPS battery, the SigmasTek SP12-100 IT delivers the combination of high performance and long service life you need to maintain uninterrupted power for your Best Technologies BAT-0103 UPS. The battery’s high-rate discharge design supports short-duration high-current demands, while the low self-discharge design keeps it ready for extended standby periods. This makes it a practical choice for both continuous protection and emergency power situations.

Rugged construction with valve-regulated, spill-proof design and high vibration resistance ensures dependable operation in various installations — from data closets and server rooms to field service vehicles and equipment racks. U.L. recognition and CE certification provide added assurance of safety and compliance. In addition to UPS units, this battery is suited for emergency power supply systems and battery powered tools that require reliable burst power.

Each battery undergoes technical testing to confirm it meets or exceeds OEM specifications, giving you confidence that this high-performance UPS battery will restore the runtime and protection your systems depend on. If longevity and dependable output are priorities for your Best Technologies BAT-0103, this SigmasTek model is an excellent replacement option.

Ready to upgrade? Purchase the SigmasTek SP12-100 IT replacement UPS battery for your Best Technologies BAT-0103 today and secure reliable, long-lasting battery performance.


Payment & Security

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