BigKat Battery | Battery Rebuild

🔋 BigKat E-Bike Battery Rebuild Service

Restore your BigKat battery to reliable, high-performance output—or upgrade it for more range and power in demanding terrain.

At EMP, we specialize in rebuilding BigKat e-bike batteries using premium lithium-ion cells and precision assembly. Whether your battery has lost capacity or you need dependable performance for off-road, hunting, or backcountry use, we’ve got you covered.

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⚙️ What We Do

We rebuild your existing BigKat battery, replacing all internal cells while maintaining the original case, fitment, and compatibility with your bike.

• Complete internal cell replacement
• Optional capacity and performance upgrades
• Retains original mounting system and connectors
• Fully tested before return shipment

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🔧 BigKat Models We Service

We support a wide range of BigKat e-bike models. Below are some of the most common:

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🟢 BigKat Ranger Battery Rebuild

A versatile all-terrain model built for rugged outdoor use.

• Fully serviceable battery platform
• Upgrade options available for increased range
• Strong performance across mixed terrain

Perfect for riders who want: dependable power and extended ride time in outdoor conditions

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🟢 BigKat Fat-Tire Models Battery Rebuild

Designed for off-road riding, snow, sand, and rough terrain.

• Upgrade options for improved capacity and output
• Stronger performance under load
• Ideal for high-demand riding environments

Perfect for riders who need: reliable power in tough terrain

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🟢 BigKat Hunting / Utility Models

Built specifically for hauling gear and long backcountry rides.

• High-demand capable rebuild options
• Upgrade paths for extended range and durability
• Designed for heavy use and consistent output

Perfect for riders who want: long-range capability and reliability in remote areas

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🟢 Other BigKat Models

We can also service additional BigKat models not listed above.

If you're unsure, simply send us photos of your battery and we’ll confirm compatibility.

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🔋 Upgrade Options

Built for riders who demand more.

BigKat batteries are excellent candidates for performance upgrades using premium cells such as Samsung, LG, or Molicel.

Upgrade benefits:

• Increased range for long backcountry rides
• Stronger power delivery under load
• Reduced voltage sag during climbs and acceleration
• Extended lifespan (typically 3–5 years with proper care)

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🧪 Diagnostics & Testing

Every battery goes through a detailed in-house process:

• Initial inspection and diagnostics
• Precision rebuild with matched high-quality cells
• BMS functionality evaluation
• Full charge/discharge testing before shipment

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⚠️ Important Notes on BigKat Batteries

BigKat batteries are generally serviceable, but like many modern systems, they may include smart BMS electronics.

• If the issue is related to the BMS or communication system, repair options may vary
• In such cases, we’ll provide clear diagnostics and honest recommendations

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📦 How the Process Works

1. Fill Out Intake Form
Complete the Battery Service Intake Form

2. Ship Your Battery
Send your battery (charger recommended but optional)

3. Evaluation & Invoice
We inspect and confirm final pricing if not prepaid

4. Rebuild & Test
Your battery is rebuilt, balanced, and tested

5. Return Shipment
We ship your battery back with tracking information

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⏱ Turnaround Time

• Current estimate: 6–8 weeks
• Expedited service available upon request

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💰 Pricing

• Typical rebuild cost: $450 – $650
• Performance upgrades or higher-capacity builds may increase cost
• Return hazmat shipping: typically $50–$60

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✅ Why Choose EMP?

• U.S.-based battery specialists
• Premium, high-performance lithium-ion cells only
• Honest diagnostics and transparent communication
• Experience with off-road and high-demand battery systems

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🚫 Please Note

• This is a battery rebuild service, not a new battery purchase
• You must send in your original BigKat battery
• We do not typically stock ready-to-ship BigKat batteries