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SigmasTek  |  SKU: BW-4503

OPTI-UPS TS400 / 400TS UPS High Performance Replacement Battery Set

Sale price $20.87 USD Regular price $26.36
Shipping calculated at checkout.

➤ Includes 2 SigmasTek SP12-5.5HR batteries (12V 5.5AH) for OPTI-UPS TS400 / 400TS UPS units

➤ High rate discharge design delivers reliable short-term power

➤ Valve regulated, spill-proof construction for leak-free use

➤ Low self-discharge preserves battery life during inactivity

➤ Factory fresh with 1-year warranty and OEM-level quality


📦🚀 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 Battery Set for OPTI-UPS TS400 / 400TS

Ensure uninterrupted protection for your OPTI-UPS TS400 / 400TS with this replacement UPS battery set featuring two SigmasTek SP12-5.5HR cells. Designed for high rate discharge scenarios and tested to meet OEM requirements, these brand new batteries provide reliable backup power for your UPS, emergency power systems, and compatible battery-powered tools. They deliver performance, safety, and long-term value for critical equipment.

Key Specifications

  • Battery Model: SigmasTek SP12-5.5HR
  • Voltage: 12 Volts
  • Capacity: 5.5 AH (Amp-hours)
  • Quantity: 2 batteries per set
  • Terminal: F2
  • Design: High Rate Discharge Design
  • Construction: Valve Regulated, Spill Proof
  • Features: Low Self-discharge
  • Features: High Vibration Resistance
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

  • Robust Durability: Valve-regulated construction makes these batteries spill-proof and safer to handle, while high vibration resistance preserves integrity in active equipment racks.
  • Extended Service Life: Low self-discharge helps retain charge during storage and standby, contributing to a long-lasting battery replacement that stays ready for action.
  • High-Performance Output: Specifically engineered for high rate discharge, these batteries supply the necessary burst power for short-duration, high-demand situations common in UPS operation.
  • Trusted Standards: U.L. recognition and CE certification provide user confidence in the safety and manufacturing quality of the batteries.
  • Multiple Uses: Perfect for use in Uninterruptible Power Supply (UPS) units such as the OPTI-UPS TS400 / 400TS, emergency power supply systems, and certain battery-powered tools requiring 12V 5.5AH modules.
  • Tested and Ready: Our technical staff personally tests each battery set to ensure it meets or exceeds the OEM specifications for compatibility and performance.

Installation reminder: you must reuse existing cables and hardware from your original battery configuration. If you need help selecting or installing this replacement UPS battery, contact our customer service at . In-stock orders typically ship within 24 hours for fast restoration of your UPS protection.

Restore full backup capacity to your OPTI-UPS TS400 / 400TS with this long-lasting, high-performance UPS battery set. Order now to secure dependable power and a 1 year warranty.



Payment & Security

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