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SigmasTek  |  SKU: BW-15331

Best SLA12550 High Performance Replacement Battery

Sale price $156.99 USD Regular price $234.85
Shipping calculated at checkout.

➤ 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

➤ Brand new, factory fresh for guaranteed quality

➤ 1 year warranty ensures peace of mind and durability


📦🚀 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 | 55 AH

Terminal Type

Nut & Bolt

Best Battery SLA12550 Replacement Battery — Compatible with SLA12550

The Best Battery SLA12550 replacement battery is designed to provide reliable, OEM-equivalent performance for your SLA12550-powered equipment. This rechargeable Sealed Lead Acid (SLA) battery uses AGM technology and a maintenance-free, spill-proof design to ensure stable, long-term operation. Whether you need a trustworthy backup for critical systems or a direct replacement for a worn cell, this long-lasting battery option offers the compatibility and performance you need.

Key Specifications

  • Model: Best Battery SLA12550 (Replacement)
  • Type: Rechargeable Sealed Lead Acid (SLA)
  • Technology: Absorbent Glass Mat (AGM) Technology
  • Voltage: 12 Volts
  • Capacity: 55 AH
  • Terminal: Nut & Bolt
  • Brand: Best Battery (Replacement by SigmasTek)
  • Condition: Brand New, Factory Fresh
  • Certifications: U.L. Recognized and CE Certified
  • Design: Maintenance-Free with Spill Proof Construction
  • Warranty: 1 Year Warranty

Benefits

  • Durability: AGM construction increases resistance to mechanical stress and minimizes leakage risks for dependable field and stationary use.
  • Long Life: Sealed and maintenance-free design reduces upkeep and supports long-term, reliable operation—delivering a long-lasting battery that keeps devices running.
  • High Performance: Engineered to meet or exceed OEM SLA specifications, this high-performance battery supports steady power output and dependable recovery from load.
  • Safety & Compliance: U.L. Recognized and CE Certified, offering peace of mind for installation in sensitive or regulated environments.
  • Applications: Ideal for UPS units, emergency power backup, medical equipment, mobility devices, alarm systems, and portable tools that require reliable SLA power.
  • User-Friendly Installation: Nut & bolt terminals provide secure connections and simple installation for professional and DIY users alike.

Ready to upgrade to a dependable Best Battery SLA12550 replacement battery? Add this high-performance, long-lasting battery to your cart now and protect your equipment with certified safety and a 1 year warranty.



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