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SigmasTek  |  SKU: BW-18511

SigmasTek ST5L-BS High Performance Compatible Replacement Battery

Sale price $33.57 USD Regular price $42.68
Shipping calculated at checkout.

➤ Maintenance-free AGM design eliminates the need for acid refills

➤ Spillproof and leakproof for safe, worry-free use

➤ U.L. recognized and CE certified for guaranteed quality

➤ Superior starting power with excellent deep cycle capacity

➤ Resistant to extreme heat, freeze, and vibration conditions


📦🚀 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 | 4.5 AH

Terminal Type

Nut & Bolt

SigmasTek ST5L-BS 12 Volt 4.5 AH Replacement Battery (Genuine) for Motorcycles

The genuine SigmasTek ST5L-BS 12 Volt 4.5 AH replacement battery is purpose-built for motorcycles and other small powersport applications that demand reliable starting power and maintenance-free operation. As an AGM maintenance-free battery, the ST5L-BS removes the need for acid filling and delivers steady performance, making it a top choice for riders looking to restore reliable starts and consistent electrical output. This high-performance battery provides the efficiency and longevity riders expect from a quality OEM-style replacement.

Key Specifications

  • Model: SigmasTek ST5L-BS
  • Voltage: 12 Volts
  • Amperage / Capacity: 4.5 AH
  • Design: AGM Maintenance Free (Absorbed Glass Mat Design)
  • Features: Maintenance-Free, Spillproof and Leakproof, Valve Regulated Vent System
  • Certifications: U.L. Recognized and CE Certified
  • Durability: Extreme Freeze, Heat and Vibration Resistance
  • Performance: Superior Starting Power and Deep Cycle Capacity
  • Condition: Brand New, Factory Fresh (Genuine SigmasTek)
  • Warranty: 6 Month Warranty
  • Terminal: Nut & Bolt
  • Brand: SigmasTek

Benefits

  • Durability: Built to resist vibration and thermal stress from motorcycle operation, this replacement battery is constructed to deliver extended life in real-world riding conditions.
  • Long Life & Low Maintenance: The AGM architecture ensures stable electrolyte containment and low self-discharge, creating a long-lasting battery solution with minimal upkeep.
  • High Performance: Provides strong cranking power and rapid recovery after starting—ideal for motorcycles that require reliable ignition and consistent electrical supply for lights and electronics.
  • Versatile Applications: While optimized for motorcycles, the ST5L-BS’s reliability and deep-cycle capability also make it suitable for small UPS systems, emergency power in compact devices, and portable tools where a compact 12V battery is required.
  • Convenience & Safety: Maintenance-free, spillproof design and certified construction (U.L. and CE) make this battery safe to handle and install, reducing the risk of leaks or corrosive maintenance issues.
  • Genuine Quality: As an authentic SigmasTek unit, it matches OEM performance expectations and fitment for compatible models, delivering peace of mind to riders.

Restore dependable starts and reliable electrical performance with the genuine SigmasTek ST5L-BS 12V 4.5AH replacement battery. Order now to secure a high-performance, long-lasting battery that fits your motorcycle and arrives ready to install—purchase today.


Payment & Security

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