Battery Tender Charge N Start 4120

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

Never face a dead battery again with the Battery Tender® Charge N Start 4120 — the ultimate 2-in-1 power solution for your vehicles and equipment. Designed and engineered in the USA, this advanced charger and jump starter combines professional-grade performance with convenient portability. Whether you’re maintaining battery health or starting a dead vehicle, the Charge N Start 4120 is built to deliver power when it matters most.

Key Features & Benefits

• Dual-Function Power: 4 AMP smart charger and 1200 AMP jump starter in one compact, portable unit.
• Professional Jump Starting: Instantly starts up to 6.0L gas or 4.0L diesel engines with 1200A of peak current.
• Smart Auto-Switch Technology: Automatically manages and maintains both the vehicle and internal jump starter batteries.
• Advanced ISM Technology: Microprocessor-controlled charging continuously monitors and optimizes your battery’s charge and condition.
• Charge N Store™ Mode: Keeps your battery at the ideal float voltage during long-term storage.
• Enhanced Safety: Spark-proof design, reverse polarity protection, and temperature compensation ensure worry-free operation.
• LED Indicators: Clear, easy-to-read lights show charging progress and battery health status at a glance.

Designed for Real-World Use

• Built-in LED emergency light for low-light or roadside conditions.
• Heavy-duty smart clamps with copper-plated jaws for solid contact.
• Compact and durable design for easy storage in your vehicle or garage.
• Includes a premium storage case for protection and organization.

Versatile Compatibility

• Automotive: Cars, SUVs, and light trucks
• Power Sports: Motorcycles, ATVs, UTVs, and dirt bikes
• Marine: Boats and personal watercraft
• Outdoor Equipment: Lawnmowers and portable power systems

Technical Specifications

• Output: 12V @ 4 AMP Charging | 12V 1200 AMP Jump Starting
• Input: 120V AC
• Battery Compatibility: AGM, GEL, Lithium, and Standard (Sealed or Flooded Lead Acid)
• Warranty: 1 Year Limited Warranty
• Certifications: BC, cETLUS (UL1236), cETLUS (UL2743), DOE, FCC, ICES, UN38.3

Cord Lengths & Reach

• Total Reach: Over 14 ft combined
• AC Power Cord: 6 ft (18 AWG)
• Charger Cable: 0.72 ft
• DC Output Cord: 6 ft (18 AWG)
• DC Accessory Cord: 2 ft (16 AWG)

Includes

• Battery Tender® Charge N Start 4120 Unit
• Heavy-Duty Smart Clamps
• Built-in LED Emergency Light
• Protective Storage Case
• Downloadable User Manual

Why Choose Battery Tender®

With over six decades of innovation, Battery Tender® remains America’s most trusted name in battery maintenance. The Charge N Start 4120 continues that legacy, providing fast, efficient, and intelligent battery care in a single, portable package. From daily drivers to off-road machines, this unit ensures you’re never left powerless — wherever your adventure takes you.

Battery Tender® Charge N Start 4120 — because your adventures shouldn’t wait for a dead battery.