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SigmasTek  |  SKU: BW-4889

Best Technologies FERRUPS MD 500VA UPS High Performance Replacement Battery

Sale price $92.48 USD Regular price $134.10
Shipping calculated at checkout.

➤ Replacement battery for Best Technologies FERRUPS MD 500VA UPS units

➤ AGM technology ensures maintenance-free, spill-proof operation

➤ High rate discharge supports emergency and UPS power needs

➤ Certified U.L. recognized and CE compliant quality

➤ Factory fresh with 1 year warranty for 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

Replacement Best Technologies FERRUPS MD 500VA Battery — Compatible with Best Technologies FERRUPS MD 500VA

Replace the battery in your Best Technologies FERRUPS MD 500VA with a reliable, compatible unit designed for performance and safety. This replacement UPS battery meets or exceeds OEM SLA standards and provides a maintenance-free, spill-proof solution to keep your UPS functioning as intended. For dependable backup power in home, office, or light industrial settings, this long-lasting battery is an excellent choice.

Key Specifications

  • Absorbent Glass Mat (AGM) Technology
  • High Rate Discharge Design
  • Maintenance-Free Design with Spill Proof Construction
  • U.L. Recognized and CE Certified
  • Brand New, Factory Fresh
  • 1 Year Warranty
  • Intended Application: Emergency Power Supply
  • Intended Application: Battery Powered Tools
  • Manufacturer/Additional text from product: SigmasTek12 Volts35 AHNut & BoltBest Technologies

Benefits

This replacement UPS battery offers dependable, high-performance operation for your Best Technologies FERRUPS MD 500VA. The AGM construction ensures consistent power delivery with low maintenance, while the high rate discharge design provides the ability to support sudden loads during power interruptions. The sealed, spill-proof design simplifies installation and reduces the risk associated with liquid electrolytes.

Long-Life Operation: Manufactured to meet or exceed OEM specifications and provided brand new, this unit gives you predictable runtime and a robust lifecycle for standby and cyclic applications. The inclusion of U.L. recognition and CE certification reflects adherence to industry safety standards.

Versatile Applications: Ideal for UPS backup, emergency power supply, and battery-powered tools, this replacement UPS battery is suitable across a variety of environments—from home office equipment to small server racks and network devices. Its maintenance-free characteristics make it well-suited for locations where unattended operation is common.

Peace of Mind: Backed by a 1 year warranty and built to OEM-equivalent specifications, this battery restores the protection your Best Technologies FERRUPS MD 500VA was designed to provide.

Secure reliable backup power now—purchase this replacement UPS battery for your Best Technologies FERRUPS MD 500VA and enjoy a high-performance, long-lasting battery with guaranteed compatibility and a 1 year warranty.


Payment & Security

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