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SigmasTek  |  SKU: BW-4705

CyberPower CPS385 High Performance Compatible SLA Replacement Battery

Sale price $10.43 USD Regular price $13.18
Shipping calculated at checkout.

➤ Set of 16 SigmasTek SP12-5.5HR batteries (12V, 5.5 AH)

➤ Optimized for high rate discharge UPS use

➤ Valve regulated, spill-proof design prevents leaks

➤ Low self-discharge for longer standby readiness

➤ 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 | 5.5 Ah

Terminal Type

F2

SigmasTek SP12-5.5HR Replacement for CyberPower CPS385

The SigmasTek SP12-5.5HR replacement for the CyberPower CPS385 is engineered to deliver reliable compatibility, strong short-term output, and trusted safety features. This replacement UPS battery is ideal for restoring runtime and protecting connected equipment in the event of outages or transient power events. If you require a high-performance UPS battery that offers consistent protection and a long-lasting battery life, the SP12-5.5HR is a practical and economical solution.

Key Specifications

  • Brand: SigmasTek
  • Model: SP12-5.5HR
  • Voltage: 12 Volts
  • Capacity: 5.5 AH
  • Terminal: F2
  • Battery Type: SLA (Sealed Lead Acid)
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated Spill Proof Construction
  • Feature: Low Self-discharge
  • Feature: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty
  • Compatible With: CyberPower CPS385 UPS units

Benefits

The SP12-5.5HR offers dependable durability and performance, making it an excellent long-lasting battery option for the CyberPower CPS385. Valve-regulated and spill-proof, the battery minimizes maintenance and improves safety during installation and operation. Low self-discharge helps ensure the battery remains ready for service after periods of standby, and high vibration resistance allows for reliable performance in a variety of environments.

As a high-performance UPS battery, it is specially suited to short, high-demand discharge scenarios—exactly when UPS systems need to deliver surge power to maintain uptime for critical loads. Use this replacement in Uninterruptible Power Supply (UPS) units, emergency power supply configurations, and battery-powered tools where compact, dependable power is required. The SP12-5.5HR is tested to meet or exceed OEM expectations so your CPS385 can continue to protect essential electronics.

Each battery is brand new, factory tested, and certified to U.L. and CE standards. Backed by a one-year warranty, this SigmasTek unit provides reliable performance and assurance for both professional and consumer users seeking a cost-effective solution.

Ensure uninterrupted protection for your CyberPower CPS385—purchase the SigmasTek SP12-5.5HR replacement UPS battery now and keep your systems running when it matters most.



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