Battery Tender Charge N Start 4120 - Smart 12V/4 AMP Battery Charger and 1200 AMP Jump Starter Combo | 2-in-1 Battery Maintainer for Cars, Motorcycles, ATVs (USA Engineered)

• Dual power solution: Revolutionary 2-in-1 device combines a 1200A jump starter with a 12V/4 AMP smart battery charger. Engineered in USA with 60 years of battery expertise.

• Powerful performance: Jump starts up to 6.0L gas & 4.0L diesel engines. Perfect for cars, SUVs, motorcycles, ATVs, boats & more. Professional-grade power when you need it most.

• Exclusive Auto-switch Technology: Unique feature automatically maintains both vehicle battery and internal jump starter - switches charging between both batteries to ensure they're always ready for use.

• Advanced safety features: Built-in spark-proof connections, reverse polarity protection, temperature compensation, and microprocessor-controlled charging for worry-free operation.

• Complete package includes: Charge N Start 4120 unit, heavy-duty smart clamps with copper-plated jaws, premium storage case, built-in LED emergency light, 1-year warranty.