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SigmasTek  |  SKU: BW-3689

APC BACK-UPS XS BX800-CN UPS High Performance Replacement Battery Set

Sale price $32.99 USD Regular price $48.30
Shipping calculated at checkout.

➤ Includes 2 SigmasTek SP12-7.5HR batteries (12V, 7.5 AH) for BX900-CN

➤ High rate discharge ideal for UPS and emergency power

➤ Valve regulated, spill-proof design for safe installation

➤ Low self-discharge keeps batteries ready for use

➤ Certified quality with 1 year warranty and OEM compliance


📦🚀 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 | 7.5 Ah

Terminal Type

F2

Replacement Battery Set for APC BACK-UPS XS BX800-CN — SigmasTek SP12-7.5HR (2-Pack)

Revitalize your APC BACK-UPS XS BX800-CN with a dependable replacement UPS battery set engineered for performance and longevity. This 2-pack of SigmasTek SP12-7.5HR batteries provides 12 Volts at 7.5 AH and is designed for high-rate discharge scenarios, low self-discharge, and strong vibration resistance—ideal for restoring runtime and reliability to your BX800-CN UPS unit.

Key Specifications

  • Included batteries: 2 x SigmasTek SP12-7.5HR
  • Voltage: 12 Volts
  • Capacity: 7.5 AH (amp-hours)
  • Terminal type: F2
  • Compatible UPS model: APC BACK-UPS XS BX800-CN
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof (sealed lead-acid)
  • Features: Low self-discharge, High vibration resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Installation note: Use all existing cables and hardware from original configuration to connect new batteries
  • Shipping note (in-stock): Orders typically shipped within 24 hours

Benefits

This replacement battery set emphasizes durability and reliable output. The valve-regulated, spill-proof construction keeps maintenance to a minimum while providing safety and peace of mind. As a high-performance UPS battery replacement, this SigmasTek pack handles short bursts of high discharge efficiently, making it well-suited to UPS units that must deliver extra power during sudden load changes.

Low self-discharge helps maintain readiness over longer storage periods, contributing to a long-lasting battery lifespan and fewer replacement cycles. High vibration resistance broadens potential installation locations, allowing use in equipment racks, small office environments, and some mobile applications. Certified by U.L. and CE standards, these batteries meet recognized safety benchmarks for consumer and commercial use.

Common applications include Uninterruptible Power Supply systems, emergency backup power, and battery-powered tools that need reliable energy delivery at critical moments. The included 1 year warranty and brand-new condition ensure customers receive dependable components that restore UPS runtime and protect sensitive electronics from unexpected power loss.

Don’t wait for a failure—purchase this replacement UPS battery set for your APC BACK-UPS XS BX800-CN today. Fast shipping and a 1 year warranty make this a smart choice to restore uninterrupted protection and long-lasting battery performance.


Payment & Security

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