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SigmasTek  |  SKU: BW-5286

APC BACKUPS BK1200 UPS Compatible Replacement Battery Set

Sale price $77.60 USD Regular price $112.53
Shipping calculated at checkout.

➤ Includes 2 brand new SigmasTek SP12-18HR batteries (12V 18AH)

➤ High rate discharge design for short bursts of high power

➤ Valve regulated, spill-proof for enhanced safety

➤ Low self-discharge and vibration resistance for durability

➤ UL recognized, CE certified, and backed by 1-year warranty


📦🚀 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 | 18 Ah

Terminal Type

Nut & Bolt

SigmasTek SP12-18HR Replacement Battery Set for APC BACKUPS BK1200

Restore dependable backup power to your APC BACKUPS BK1200 with this brand new, factory-fresh replacement UPS battery set. Designed for compatibility, performance, and reliability, this two-battery kit delivers the high rate discharge capability your BK1200 needs for short bursts of elevated load. Whether you’re protecting home office equipment, network devices, or critical systems, this high-performance UPS battery replacement offers a cost-effective way to maintain uptime and avoid interruptions.

Key Specifications

  • Brand: SigmasTek
  • Battery Model: SP12-18HR
  • Quantity: 2 batteries per set
  • Voltage: 12 Volts
  • Capacity: 18 AH
  • Terminal Type: Nut & Bolt
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Features: Low Self-discharge
  • Features: 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 your original configuration to connect the new UPS batteries
  • Compatible UPS Model: APC BACKUPS BK1200

Benefits

This replacement UPS battery set is engineered for durability and dependable performance. The valve regulated, spill-proof construction resists leaks and tolerates vibration, making these batteries suitable for both stationary UPS installations and environments with moderate movement. The high rate discharge design is optimized for UPS applications where a high power output over a short period is required, ensuring connected equipment stays powered during brief outages and transitions.

As a high-performance UPS battery, this SigmasTek SP12-18HR set delivers reliable starting power and consistent output under load. Low self-discharge improves shelf life and readiness, while UL recognition and CE certification confirm safety and quality standards. Backed by a 1 year warranty and factory-fresh condition, these batteries offer a long-lasting battery solution when you need to replace aging cells in your BK1200.

Typical applications include Uninterruptible Power Supply (UPS) units like the APC BACKUPS BK1200, emergency power supply systems, and battery-powered tools that require a stable, short-duration power source. Our in-house testing ensures these replacement batteries meet or exceed OEM expectations so you get consistent, predictable performance.

Ready to replace the batteries in your APC BACKUPS BK1200? Order this SigmasTek replacement UPS battery set now and enjoy superior performance, quick shipping, and expert support. Purchase today to keep your equipment protected and powered.


Payment & Security

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