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SigmasTek  |  SKU: BW-16136

OUTDO OT28-12(W) High Performance Replacement Battery

Sale price $89.99 USD Regular price $133.48
Shipping calculated at checkout.

➤ Compatible with OUTDO OT28-12(W) model for a perfect fit

➤ Features Absorbent Glass Mat (AGM) technology for enhanced performance

➤ Maintenance-free and spill-proof design for hassle-free use

➤ U.L. recognized and CE certified for safety and reliability

➤ Includes a 1-year warranty for peace of mind


📦🚀 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 | 26 Ah

Terminal Type

Nut & Bolt

OUTDO OT28-12(W) Replacement Battery — Compatible with OUTDO OT28-12(W)

Restore dependable power to your equipment with this replacement battery crafted for the OUTDO OT28-12(W) model. Engineered to match or surpass OEM SLA specifications, this sealed lead acid battery offers durable, maintenance-free performance and trusted safety certifications. Ideal for standby and cyclic applications, this long-lasting battery ensures you have reliable backup when you need it most.

Key Specifications

  • Compatible Model: OUTDO OT28-12(W)
  • Brand: SigmasTek
  • Battery Type: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM)
  • Voltage: 12 Volts
  • Capacity: 26 Ah
  • Terminal Type: Nut & Bolt
  • Design: Maintenance-Free with Spill Proof Construction
  • Certifications: U.L. Recognized and CE Certified
  • Condition: Brand New, Factory Fresh
  • Warranty: 1 Year Warranty

Benefits

This replacement battery provides exceptional durability and reliable run-time for applications requiring steady 12V power. The AGM technology ensures a sealed, maintenance-free operation that tolerates repeated charge/discharge cycles and resists leakage, while the spill-proof construction allows safe installation in enclosed spaces. As a high-performance battery alternative to the original OUTDO OT28-12(W), it offers consistent output and extended service life.

Use this long-lasting battery in a variety of settings: UPS units, emergency lighting, security and alarm systems, telecom backups, mobility devices, and workshop power tools. The nut & bolt terminal design creates a firm, low-resistance connection suitable for heavy-duty installations and reduces the risk of loose connections under vibration or movement. U.L. Recognition and CE Certification demonstrate that this product adheres to established safety standards for both consumer and professional use.

Brand new and factory fresh, this SigmasTek replacement battery arrives ready to install and is backed by a 1 year warranty to protect your investment. Its maintenance-free design keeps upkeep minimal and reduces total cost of ownership over time.

Don’t compromise on power reliability—purchase this OUTDO OT28-12(W) replacement battery today to ensure continuous, dependable performance. Add to cart to secure your backup power now.



Payment & Security

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