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SigmasTek  |  SKU: BW-1579

Best Power LI 3.0KVA Compatible Replacement Battery Set

Sale price $274.99 USD Regular price $393.06
Shipping calculated at checkout.

➤ Includes 3 batteries for Best Power LI 3.0KVA

➤ AGM sealed design for maintenance-free operation

➤ Compatible with original Best Power UPS units

➤ UL certified for quality assurance

➤ 1-year warranty included


📦🚀 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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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.
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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 | 35 AH

Terminal Type

Nut & Bolt

Best Power LI 3.0KVA Replacement - 3 x 12V 35AH (NB Terminal)

Maximize uptime and protect critical loads on your Best Power LI 3.0KVA by replacing depleted cells with this full three-battery replacement pack. These replacement UPS batteries use AGM Absorption Glass Mat technology and are UL certified to meet safety and performance demands. The set is designed to match OEM specifications so your UPS returns to reliable operation quickly.

Key Specifications

  • Compatible UPS Model: Best Power LI 3.0KVA
  • Package contains: 3 batteries (price includes all 3)
  • Voltage: 12 V
  • Amp Hours: 35 AH
  • Chemistry: SLA (Sealed Lead Acid)
  • AGM Technology: Absorption Glass Mat sealed construction
  • Terminal: NB (Nut & Bolt)
  • Weight (per battery): 74.1Lbs
  • Dimensions (per battery): Length 7.72 In, Width 5.14 In, Height 6.14 In
  • Warranty: 1-year Warranty
  • Certification: UL (Underwriters Laboratories) certified
  • Brand / Spec Sheet: SigmasTek UPS Batteries Spec Sheets referenced
  • Shipping Methods: UPS Ground and USPS
  • Handling: We ship in 1 business day for all in-stock items
  • Guaranteed compatibility with original battery set

Benefits

  • Durability: AGM construction provides a sealed, vibration-resistant design that holds up in demanding UPS installations.
  • Long life: A long-lasting battery pack engineered to provide consistent capacity and sustained runtime for your Best Power LI 3.0KVA.
  • High performance: Count on this high-performance UPS battery set to deliver the steady voltage and current required for seamless emergency power transitions.
  • Maintenance-free: SLA/AGM technology eliminates the need for routine maintenance, ideal for server rooms and remote installations.
  • Straightforward replacement: Install in the same configuration as the originals and reuse existing cables and hardware; NB terminals provide secure connections.
  • Versatile applications: Suitable for UPS backup, emergency power, telecom, security systems, and other mission-critical equipment.
  • Certified and supported: UL-certified for safety and backed by a one-year warranty; customer service is available via email, chat, or toll-free at (800) 657-1303.

Keep your Best Power LI 3.0KVA ready to protect vital systems—order this dependable, long-lasting battery set now. Fast shipping and a one-year warranty make this an easy choice for maintaining uninterrupted power protection.


Payment & Security

Payment methods

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