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SigmasTek  |  SKU: BW-17370

STX14AH-BS for Polaris Magnum, Sportsman & YFM 350/400/425/500 ATV - High Performance Compatible Replacement Battery

Sale price $71.49 USD Regular price $97.88
Shipping calculated at checkout.

➤ Direct replacement for Polaris Magnum, Sportsman, and YFM ATV models

➤ Compatible with 350, 400, 425, and 500 engine sizes

➤ Maintenance-free, sealed design for hassle-free use

➤ Meets or exceeds OEM specs for reliable starting power

➤ Spill-proof and vibration-resistant for safe, durable performance


📦🚀 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 | 14 Ah

Terminal Type

Nut & Bolt

STX14AH-BS Battery For Polaris Magnum, Sportsman, YFM 350/400/425/500 ATV

Replace your ATV’s aging battery with a reliable STX14AH-BS replacement battery designed for Polaris Magnum, Sportsman, and YFM models equipped with 350, 400, 425, and 500 engines. This sealed, maintenance-free, high-performance battery provides dependable starting power, excellent vibration resistance, and a precise fit—giving you confidence that your ATV will start when you need it most.

Key Specifications

  • Model: STX14AH-BS
  • Voltage: 12 Volts
  • Amp-hours: 14 Ah
  • Terminal Type: Nut & Bolt
  • Brand: SigmasTek
  • Design: Sealed, maintenance-free
  • Features: Spill-proof, leak-proof, vibration resistant, deep discharge protection
  • Compatibility: Polaris Magnum, Sportsman, YFM with 350/400/425/500 engines

Benefits

The STX14AH-BS offers durability and long life through its sealed construction and advanced internal design that resists vibration and deep discharge. This high-performance battery produces reliable cranking power for cold starts and repeated starts, ideal for riders and workers who depend on their ATV for daily tasks. Maintenance-free operation eliminates the hassle of watering or electrolyte checks, freeing you to focus on riding, hunting, or work without battery maintenance worries.

As a long-lasting battery, it tolerates the shock and vibration common to off-road use, protecting internal plates and prolonging service life. The spill-proof and leak-proof configuration improves safety during installation and transport, and the nut & bolt terminals deliver a secure electrical connection for consistent accessory power. Typical applications include starting ATVs, powering lights and winches, and supplying small emergency power for tools and electronics when camping or on remote job sites.

Designed to meet or exceed OEM specifications, this direct replacement ensures a precise fit and straightforward installation. Whether you're replacing an old battery or upgrading for greater reliability, the STX14AH-BS is a practical, high-performance battery solution for Polaris 350–500 engine ATVs.

Don't let a weak battery interrupt your ride—order this STX14AH-BS replacement battery today and enjoy dependable starts and extended performance on every outing.


Payment & Security

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