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SigmasTek  |  SKU: BW-2001

APC SMART-UPS POWERSTACK 250VA UPS High Performance Replacement Battery Set

Sale price $42.99 USD Regular price $62.80
Shipping calculated at checkout.

➤ Includes 2 brand new SigmasTek SP6-9HR batteries (6 Volts 9 AH)

➤ High rate discharge design for superior UPS performance

➤ Valve regulated, spill-proof construction for safety and durability

➤ Low self-discharge and high vibration resistance for long-lasting reliability

➤ UL recognized and CE certified 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

6 Volts | 9 AH

Terminal Type

F2

SigmasTek SP6-9HR Replacement Battery Set for APC SMART-UPS POWERSTACK 250VA

Designed specifically for compatibility with the APC SMART-UPS POWERSTACK 250VA, this premium replacement UPS battery set delivers reliable performance and dependable backup power when you need it most. Each set includes two SigmasTek SP6-9HR cells (6 Volts, 9 AH) engineered for high-rate discharge applications, giving your UPS the ability to provide higher power output over short periods. These brand new, factory-fresh batteries offer low self-discharge and high vibration resistance for stable, long-term service. Please note: you must reuse the existing cables and hardware from your original configuration to connect these batteries safely.

Key Specifications

  • Battery Model: SigmasTek SP6-9HR
  • Quantity: 2 batteries per set
  • Voltage: 6 Volts
  • Capacity: 9 AH (amp-hours)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Feature: Low Self-discharge
  • Feature: High Vibration Resistance
  • Safety/Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatible With: APC SMART-UPS POWERSTACK 250VA

Benefits

This replacement UPS battery set is built for durability and dependable performance. The high rate discharge design supports brief bursts of elevated power demand, making these cells an excellent choice when your APC SMART-UPS POWERSTACK 250VA needs to handle heavy transient loads. Valve-regulated, spill-proof construction reduces maintenance concerns and improves safety in rack and cabinet installations. Low self-discharge preserves capacity during storage, while high vibration resistance protects the internal plates and prolongs service life in environments with movement or occasional shock.

As a high-performance UPS battery solution, these SigmasTek cells provide superior performance compared to worn-out factory batteries, bringing renewed runtime and stability to your UPS system. They are an ideal option for uninterruptible power supply (UPS) units, emergency power supply setups, and battery-powered tools that rely on fast, robust energy delivery. Our technically savvy staff personally tests all replacement batteries to ensure they meet or exceed OEM specifications, so you can count on consistent, long-lasting battery support.

Whether you’re replacing aged cells or stocking spares for critical equipment, this long-lasting battery option restores confidence in your backup power system. We typically ship in-stock orders within 24 hours, and our customer service team is available at to assist with selection and installation questions.

Ready to upgrade? Purchase this high-performance replacement UPS battery set for your APC SMART-UPS POWERSTACK 250VA today and secure reliable backup power with a trusted one-year warranty.


Payment & Security

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