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SigmasTek  |  SKU: BW-17466

Coolster GK-6125 125CC High Performance Replacement Battery

Sale price $47.27 USD Regular price $61.41
Shipping calculated at checkout.

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

➤ Spillproof and leakproof for safe, hassle-free use

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

➤ Extreme resistance to freeze, heat, and vibration ensures durability

➤ Provides superior starting power and deep cycle capacity for high 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 | 6 Ah

Terminal Type

Nut & Bolt

Coolster 125CC GK-6125 Replacement Go Kart Battery

Specifically designed as a replacement battery for the Coolster 125CC GK-6125 go kart, this AGM maintenance-free unit offers dependable starting power, rugged reliability and maintenance-free convenience. Ideal for high-rate discharge applications like go karts where short bursts of high power are required, this high-performance battery provides consistent starts and stable power delivery while resisting vibration and temperature extremes.

Key Specifications

  • Compatible Model: Coolster 125CC GK-6125 (Go Kart)
  • Replacement Brand: SigmasTek
  • Vehicle Brand: Coolster
  • Battery Type: AGM Maintenance-Free (Absorbed Glass Mat Design)
  • Voltage: 12 Volts
  • Amp-Hours: 6 Ah
  • Terminal Type: Nut & Bolt
  • Design Features: Maintenance-Free, Spillproof and Leakproof
  • Certifications: U.L. Recognized and CE Certified
  • Valve Regulated Vent System
  • Durability: Extreme Freeze, Heat and Vibration Resistance
  • Performance: Superior Starting Power and Deep Cycle Capacity
  • Condition: Brand New, Factory Fresh
  • Warranty: 6 Month Warranty

Benefits

  • Durability: The AGM design and robust build protect against spills and leaks and add resistance to vibration—perfect for the bumps and impacts of karting.
  • Long Life: A maintenance-free construction eliminates the need for acid topping, and factory testing helps ensure this long-lasting battery will deliver reliable service lap after lap.
  • High Performance: Built for high-rate discharge, this high-performance battery provides the immediate power needed for fast starts and acceleration in competitive and recreational go karts.
  • Quality Assured: U.L. recognition and CE certification demonstrate compliance with industry safety and quality standards for confident operation.
  • Flexible Applications: While optimized for the Coolster 125CC GK-6125 go kart, this 12V replacement battery is also a dependable choice for similar powersports, emergency backup power, UPS systems or portable tools that require a reliable, long-lasting battery.
  • Ready to Install: Ships brand new and factory fresh with professional testing and packaging and includes a 6 month warranty for peace of mind.

Ready to upgrade? Purchase this Coolster 125CC GK-6125 replacement battery now to enjoy a high-performance, long-lasting battery solution that keeps your go kart running strong.


Payment & Security

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