Battery Tender - Charge N Start 4120 4 AMP Battery Charger & 1200 AMP Jump Starter

Never Face a Dead Battery Again: Introducing the Battery Tender® Charge N Start 4120
Transform your battery maintenance experience with the innovative Battery Tender® Charge N Start 4120 – your ultimate 2-in-1 power solution. Engineered in the USA and backed by our 60-year legacy of battery expertise, this versatile device combines our advanced charging technology with reliable jump-starting power in one portable unit.

Professional-Grade Power When You Need It Most
Whether you're facing an emergency start or maintaining your vehicle's battery health, the Charge N Start 4120 delivers exceptional performance. With 1200A of instant jump-starting power, it easily handles up to 6.0L gas and 4.0L diesel engines. The integrated 12V/4 AMP smart charger utilizes our exclusive ISM (Infinite Sequential Monitoring) technology to optimize your battery's health and extend its lifespan.

Auto-Switch Feature
Advanced charging technology automatically switches between maintaining your vehicle's battery and the internal jump starter, ensuring both power sources are always charged and ready for use. No manual intervention needed – the Charge N Start 4120 intelligently manages both batteries for complete peace of mind.

Smart Technology Meets Safety
Every Charge N Start 4120 features our advanced microprocessor-controlled charging system that automatically detects your battery charge level and adjusts accordingly. Our proprietary Charge N Store™ technology monitors and maintains optimal float voltage during long-term storage, ensuring your battery stays ready for action.

Multiple built-in safety features, including spark-proof connections, reverse polarity protection, and temperature compensation, provide peace of mind during every use.

Designed for Real-World Convenience
We've thoughtfully engineered every aspect of the Charge N Start 4120 for maximum usability:

• Easy to see LED lights show charging status and battery health at a glance

• Built-in LED emergency light for nighttime visibility

• Heavy-duty smart clamps with copper-plated jaws ensure superior connectivity

• Compact, portable design fits easily in your vehicle

• Premium storage case included for protection and organization 

Versatile Compatibility
From weekend warriors to professional mechanics, the Charge N Start 4120 is designed to handle diverse vehicle applications:

• Automotive: Cars, SUVs, and light trucks

• Power Sports: Motorcycles, ATVs, and UTVs

• Marine: Personal watercraft and boats

• Emergency: Reliable backup power when you need it most 

The Smart Choice for Complete Battery Care
The Charge N Start 4120 represents the next evolution in battery maintenance technology. By combining jump-starting capabilities with our industry-leading charging technology, you get professional-grade battery care in one convenient device.

Whether you're maintaining a single vehicle or managing an entire fleet, the Charge N Start 4120 delivers the performance, reliability, and safety features you expect from Battery Tender.

Don't let battery issues slow you down. Experience the peace of mind that comes with having America's most trusted battery care solution at your fingertips. The Battery Tender® Charge N Start 4120 – because your adventures shouldn't wait for a dead battery.