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SigmasTek  |  SKU: BW-15341

8-Pack 12 Volt 5.5 Amp UPS Compatible Replacement Battery Set

Sale price $120.39 USD Regular price $138.25
Shipping calculated at checkout.

➤ Includes 8 high-quality 12V 5.5AH batteries for reliable UPS backup

➤ Compatible with multiple APC SMART-UPS models for versatile use

➤ High rate discharge design ensures powerful output during outages

➤ Factory fresh batteries with 1-year warranty for peace of mind

➤ In stock with same day shipping and professional customer support


📦🚀 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 | 5.5 Ah

Terminal Type

F2

APC RBC43 Replacement Battery Set - 8 x SigmasTek SP12-5.5HR (12 Volts 5.5 AH)

This brand new APC RBC43 replacement battery set includes eight fully tested 12 Volt 5.5 AH SP12-5.5HR batteries, engineered for direct compatibility with APC Smart-UPS and related models. Designed for high-rate UPS discharge applications, this set provides concentrated power delivery for critical surge and short-duration load events. If you need a replacement battery set that restores runtime and reliability to your APC UPS, this premium SigmasTek kit delivers factory-fresh performance and professional support.

Key Specifications

  • Replacement Set: APC RBC43 compatible
  • Quantity: 8 batteries included
  • Individual Battery Model: SP12-5.5HR
  • Voltage: 12 Volts (each)
  • Capacity: 5.5 AH (each)
  • Replacement Brand: SigmasTek
  • Terminal Type: F2
  • Design: High Rate Discharge, High Quality UPS Batteries
  • Condition: Brand New, Factory Fresh
  • Availability: In Stock and Same Day Shipping
  • Support: Professional Customer Support
  • Warranty: 1 Year
  • Note: Use existing cables and hardware to connect replacement batteries

Benefits

This APC RBC43 replacement battery set is specifically engineered for UPS systems requiring rapid, high-current discharge over short durations. The high rate discharge design makes these batteries a top choice when you need a high-performance battery that can handle the demands of server rooms, network closets, and critical infrastructure. With factory testing, professional packaging, and strict quality control, this replacement battery set provides reliable, consistent power when failures occur.

Durability: Built for repeated high-rate cycles and backed by rigorous testing to ensure dependable service. Long life: Quality components and supply-chain controls help maintain capacity and performance over the warranty period. Performance: Optimized for UPS applications to deliver stable voltage and rapid response during power events.

  • Compatible APC models include SMART-UPS DLA2200RM2U, DLA3000RM2U, DLA3000RMT2U, SUA3000R2X145, SUA3000R2X180, SUA3000RMUS, RM SUA3000RM2U, RM SUA3000RMT2U, XL SUM1500RMXL2U, SUA2200RMUS, RM SUA2200RM2U, and XL SUM3000RMXL2U
  • Primary applications: server and network UPS systems, data centers, telecommunications, and emergency power for critical equipment
  • Includes same-day shipping options and professional customer support for installation guidance

Restore reliable UPS runtime with this SigmasTek APC RBC43 replacement battery set — eight high-performance, long-lasting batteries designed for APC UPS models. Order now to ensure fast shipping and professional support, backed by a 1 year warranty.


Payment & Security

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