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SigmasTek  |  SKU: BW-17300

STX20L-BS High Performance Replacement Battery for Yamaha Kodiak 400 YFM40FW (1996-2002)

Sale price $59.98 USD Regular price $82.13
Shipping calculated at checkout.

➤ Direct replacement for Yamaha Kodiak 400 YFM40FW (1996-2002)

➤ Meets or exceeds OEM specifications for dependable starting power

➤ Maintenance-free design eliminates the need for regular upkeep

➤ Durable construction built to handle tough off-road conditions

➤ Perfect fit ensures easy and hassle-free installation


📦🚀 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.
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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 | 18 Ah

Terminal Type

Nut & Bolt

STX20L-BS Battery — Replacement for Yamaha Kodiak 400 YFM40FW (1996-2002)

Bring dependable power back to your Yamaha Kodiak 400 YFM40FW (1996-2002) with this STX20L-BS replacement battery. Designed to meet or exceed OEM specifications, this maintenance-free unit delivers consistent starting performance and durability under demanding off-road conditions. The STX20L-BS provides a precise fit and hassle-free installation, making it an excellent choice for riders who demand reliability, longevity, and strong cold-start capability from their ATV battery.

Key Specifications

  • Model: STX20L-BS
  • Compatible Model: Yamaha Kodiak 400 YFM40FW (1996-2002)
  • Voltage: 12V
  • Capacity: 18Ah
  • Brand: SigmasTek
  • Dimensions: 6.89L x 3.43W x 6.10H (inches)
  • Maintenance: Maintenance-free
  • Design Features: Durable construction for off-road conditions

Benefits

  • Durability: Built to withstand the stresses of off-road riding — rugged construction ensures resistance to shocks, vibration, and extreme riding conditions.
  • Long Life: Maintenance-free technology reduces the need for regular service while delivering steady performance over many seasons, making it a reliable long-lasting battery option.
  • High Performance: Provides the dependable cranking power needed for reliable starts in cold weather and after long storage periods, restoring dependable starting behavior to older machines.
  • Reliable Fit: Designed as a direct replacement for the Kodiak 400 (1996-2002), guaranteeing the correct dimensions and terminal placement for easy installation and secure mounting.
  • Typical Applications: Perfect for ATVs, powersports use, and auxiliary situations such as emergency power for small electronics, UPS modules for critical devices, and powering portable tools in remote job sites.

If you’re looking for a high-performance battery that provides a precise fit and reliable starting for your Yamaha Kodiak 400 YFM40FW (1996-2002), the STX20L-BS is an excellent choice. This long-lasting battery balances power and durability so you can focus on the ride instead of battery worries. Add it to your cart now and enjoy dependable starts season after season.


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