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SigmasTek  |  SKU: BW-1594

Best Technologies LI 1.8KVA High Performance Replacement Battery Set

Sale price $183.99 USD Regular price $262.04
Shipping calculated at checkout.

➤ Comes with 2 replacement 12V 35AH UPS batteries with NB terminal included

➤ AGM sealed battery technology delivers reliable, maintenance-free power

➤ UL certified and compatible with Best Technologies LI 1.8KVA UPS models

➤ Easy installation using existing cables and hardware

➤ 1-year warranty provides peace of mind


📦🚀 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 | 35 AH

Terminal Type

Nut & Bolt

Best Technologies LI 1.8KVA Replacement UPS Battery (Compatible with Best Technologies LI 1.8KVA)

Restore full backup capability to your Best Technologies LI 1.8KVA with this complete set of replacement UPS batteries. Designed for OEM compatibility and robust operation, this pair provides the capacity and safe, sealed performance needed to maintain your UPS system during power interruptions. These AGM batteries deliver reliable starting power and steady discharge characteristics for critical loads.

Key Specifications

  • Package contains: 2 batteries
  • Volts: 12 V
  • Amp Hours: 35 AH
  • Chemistry: SLA (Sealed Lead Acid)
  • Technology: AGM (Absorption Glass Mat) Sealed Battery Technology
  • Terminal: NB (Nut & Bolt)
  • Weight: 49.4 Lbs
  • Length: 7.72 In
  • Width: 5.14 In
  • Height: 6.14 In
  • Guaranteed compatibility with original battery set
  • UL certified
  • Warranty: 1-year Warranty
  • Shipping: UPS Ground and USPS; we ship in 1 business day for all in-stock items
  • Brand: SigmasTek

Benefits

These batteries offer durability and consistent long-term performance. AGM construction provides superior mechanical strength and resistance to shock and vibration, translating to a long-lasting battery solution for both indoor and rack-mounted UPS units. The sealed design ensures safe use around sensitive electronics with minimal maintenance.

As a high-performance UPS battery, this set is well-suited for UPS backup systems, emergency power supplies, networking equipment, VoIP/telecom gear, and workshop tools that require steady DC backup. Expect predictable discharge behavior and reliable recharging cycles to maximize the uptime of your critical systems.

Installation requires replacing your old Best Technologies LI 1.8KVA batteries in the original configuration and reusing the existing cables and hardware. Confirm measurements against your current batteries to ensure a proper fit.

Don’t wait until a power failure reveals depleted batteries. Buy this replacement UPS battery pair for your Best Technologies LI 1.8KVA today to secure a high-performance, long-lasting battery solution with fast shipping and a 1-year warranty.


Payment & Security

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