STX20L-BS High Performance Replacement Battery for Yamaha YFM45FX Wolverine (2003-2010)
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Battery Care Guide
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
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
⚠️ 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 YFM45FX Wolverine (2003-2010)
Upgrade your Yamaha YFM45FX Wolverine (2003-2010) with the STX20L-BS replacement battery engineered for compatibility, dependable performance, and long-term reliability. This high-performance battery is a direct replacement for the STX20L-BS OEM unit and delivers the starting power your 450cc Wolverine needs to tackle trails, mud, and steep climbs. Designed to meet or exceed OEM specifications, it provides consistent cranking power and a maintenance-free ownership experience so you can spend more time riding and less time worrying about battery upkeep.
Key Specifications
- Model: STX20L-BS
- Compatible Models: Yamaha YFM45FX Wolverine (2003-2010)
- Voltage: 12 Volts
- Capacity: 18 Ah
- Terminal Type: Nut & Bolt
- Brand: SigmasTek
- Direct replacement for STX20L-BS
- Designed specifically for the 450cc engine
- Maintenance-free design
- Durable construction to withstand vibration and impacts
Benefits
This STX20L-BS long-lasting battery provides rugged durability and dependable life in demanding ATV environments. Built to resist vibration and physical impact common to off-road riding, it reduces the risk of premature failure so your machine starts when you need it most. As a maintenance-free, sealed design, it eliminates the need for periodic water checks and reduces service time—ideal for riders who want a hassle-free, reliable power source.
Performance-wise, the high-performance battery chemistry and OEM-spec construction ensure consistent cold-cranking ability and dependable starts after storage or extended downtime. Its exact-fit design means a straightforward swap with the original battery so you can get back on the trail quickly. Typical applications include primary starting power for ATVs, backup power for off-road accessories, and reliable service for seasonal storage — it also functions well as a dependable source for emergency starts.
Whether you’re replacing a worn OEM unit or upgrading to a more dependable power source, the STX20L-BS replacement battery combines fitment accuracy, robust construction, and consistent starting power for the Yamaha YFM45FX Wolverine. This long-lasting battery is an excellent choice for riders seeking reliable starts and low maintenance.
Ready to restore dependable starting power to your Wolverine? Add the STX20L-BS high-performance replacement battery to your cart and get back to riding with confidence.
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